Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Download
Faster access than browser!
 

Galaxy cluster

Index Galaxy cluster

A galaxy cluster, or cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity with typical masses ranging from 1014–1015 solar masses. [1]

294 relations: A1689-zD1, Abell 1201 BCG, Abell 133, Abell 1413, Abell 1689, Abell 1795, Abell 1835, Abell 1835 IR1916, Abell 1991, Abell 2029, Abell 2061, Abell 2065, Abell 2067, Abell 2142, Abell 2147, Abell 2162, Abell 2163, Abell 2199, Abell 2218, Abell 222, Abell 223, Abell 2256, Abell 2261, Abell 2390, Abell 262, Abell 2667, Abell 2744, Abell 3266, Abell 370, Abell 3742, Abell 383, Abell 39, Abell 400, Abell 478, Abell 520, Abell 569, Abell 576, Abell 665, Abell 671, Abell 754, Abell 907, Abell catalogue, Abell S1077, Abell S740, Accelerating expansion of the universe, AMiBA, Amundsen–Scott South Pole Station, Andrew Fabian, Andrew R. Liddle, Anemic galaxy, ..., Antlia, Antlia Cluster, Arcus (satellite), Astromundus, Astronomical spectroscopy, Astrophysical plasma, Astrophysical X-ray source, Astrophysics Research Institute, Atacama Cosmology Telescope, Balmer series, Bautz–Morgan classification, Big Bang, Big Crunch, Brightest cluster galaxy, Bulge (astronomy), Bullet Cluster, Bullet Galaxy, Bullet Group, Carina (constellation), Catalogue of Galaxies and Clusters of Galaxies, Centaurus, Centre for Astrophysics of the University of Porto, Cetus, Chandra X-ray Observatory, Chronology of the universe, CL J1001+0220, CL0024+17, CLG, Cluster, Cluster diagram, Cluster Lensing and Supernova survey with Hubble, Clyde Tombaugh, Cold dark matter, Color–color diagram, Coma Berenices, Coma Cluster, Coma I, Comet Galaxy, Compton scattering, Cooling flow, Corona Borealis, Cosimo Bambi, Cosmic distance ladder, Cosmic microwave background, Cosmological perturbation theory, Cygnus (constellation), Dark Energy Survey, Dark flow, Dark matter, Dark Universe Observatory, Density contrast, Diffusion damping, Draco (constellation), Dwarf spiral galaxy, El Gordo (galaxy cluster), Elliptical galaxy, Entropy (astrophysics), Eridanus Cluster, Eridanus Group, Etherington's reciprocity theorem, EXOSAT, Expansion of the universe, Extragalactic astronomy, Field galaxy, Fornax, Fornax Cluster, G350.1-0.3, Galactic orientation, Galaxy, Galaxy Cluster IDCS 1426, Galaxy filament, Galaxy formation and evolution, Galaxy group, Galaxy rotation curve, Galaxy Zoo, Gale Bruno van Albada, Gamma-ray burst, George Blumenthal, George Smoot, Giampaolo Vettolani, Giant Void, Globular cluster, Gravitational lens, Great Attractor, György Paál, H II region, Heat death of the universe, Henry Lin, Hercules Superclusters, Holmberg 15A, Hot dark matter, Hubble Heritage Project, Hubble's law, Hydra Cluster, Hydrostatic equilibrium, Hypercompact stellar system, IC 1101, Inhomogeneous cosmology, Institute of Astronomy, Cambridge, Interacting galaxy, International X-ray Observatory, Intracluster medium, IRC 0218, Jellyfish galaxy, Jerzy Neyman, Laniakea Supercluster, Large Binocular Telescope, Large Millimeter Telescope, LBG-2377, Leo Cluster, Leo Supercluster, Light-year, List of Abell clusters, List of astronomy acronyms, List of dates predicted for apocalyptic events, List of fractals by Hausdorff dimension, List of galaxy groups and clusters, List of quasars, List of space telescopes, List of the most distant astronomical objects, List of voids, Lists of astronomical objects, Local Group, Lynx Arc, MACS J0025.4-1222, MACS J0416.1-2403, MACS J0647+7015, MACS J0717.5+3745, MACS J1149 Lensed Star 1, MACS0647-JD, Mass-to-light ratio, MAssive Cluster Survey, Max Planck Institute for Astrophysics, Megan Donahue, Messier 49, Messier 98, Milky Way, Modified Newtonian dynamics, MS 0735.6+7421, Musket Ball Cluster, Neta Bahcall, NGC 1128, NGC 1316, NGC 3607, NGC 4492, NGC 4522, NGC 4598, NGC 4696, NGC 5962, Nicholas Mayall, Nick Kaiser, Noam Soker, Norma (constellation), Norma Cluster, Nova, NVSS 2146+82, Observable universe, Orbiting Solar Observatory, Orders of magnitude (length), Osipkov–Merritt model, Outline of galaxies, Parsec, Peculiar velocity, Perseus (constellation), Perseus Cluster, Perseus-Pisces Supercluster, Peter Coles, Phoenix (constellation), Phoenix Cluster, Physical cosmology, Pictor, Pisces (constellation), Pisces–Cetus Supercluster Complex, Planck (spacecraft), Planetary system, Press–Schechter formalism, Quasar, Radio astronomy, Radio halo, Radio relics, Ram pressure, Rashid Sunyaev, Redshift quantization, Redshift-space distortions, Retrograde and prograde motion, ROSAT, RX J1347.5-1145, Saraswati Supercluster, Satellite galaxy, SCP 06F6, Serpens, Sextans, Shock waves in astrophysics, SN Refsdal, SpaceEngine, SpARCS1049+56, SPT-CL J0546-5345, SPT-CL J2106-5844, SSA22 Protocluster, Stellar dynamics, Strong gravitational lensing, Structure formation, Sunyaev–Zel'dovich Array, Sunyaev–Zel'dovich effect, Supercluster, Supergalactic coordinate system, Supergalaxy, Three-body problem, Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure, Timeline of the far future, Timeline of the formation of the Universe, Twin Quasar, Type-cD galaxy, Ultimate fate of the universe, University of Birmingham, Ursa Major, Ursa Major Cluster, Vela Supercluster, Velocity dispersion, Virgo (constellation), Virgo Cluster, Virgo Supercluster, Virial theorem, Void (astronomy), Void galaxy, Warm dark matter, Weak gravitational lensing, Wilkinson Microwave Anisotropy Probe, William Wilson Morgan, X-ray astronomy, X-ray transient, XMM Cluster Survey, XMM-Newton, XMMXCS 2215-1738, Yoel Rephaeli, Zero-velocity surface, Zwicky (crater), 1803 Zwicky, 2014 in science, 2015 in science, 2016 in science, 2XMM J083026+524133, 3C 295, 3C 75. Expand index (244 more) »

A1689-zD1

A1689-zD1 is a galaxy in the Virgo constellation cluster.

New!!: Galaxy cluster and A1689-zD1 · See more »

Abell 1201 BCG

Abell 1201 BGC is a massive elliptical galaxy residing as the brightest cluster galaxy of the Abell 1201 galaxy cluster.

New!!: Galaxy cluster and Abell 1201 BCG · See more »

Abell 133

Abell 133 is a galaxy cluster in the Abell catalogue.

New!!: Galaxy cluster and Abell 133 · See more »

Abell 1413

Abell 1413 is a galaxy cluster in the Abell catalogue.

New!!: Galaxy cluster and Abell 1413 · See more »

Abell 1689

Abell 1689 is a galaxy cluster in the constellation Virgo nearly 2.2 billion light-years away.

New!!: Galaxy cluster and Abell 1689 · See more »

Abell 1795

Abell 1795 is a galaxy cluster in the Abell catalogue.

New!!: Galaxy cluster and Abell 1795 · See more »

Abell 1835

Abell 1835 is a galaxy cluster in the Abell catalogue.

New!!: Galaxy cluster and Abell 1835 · See more »

Abell 1835 IR1916

Abell 1835 IR1916 (also known as Abell 1835, Galaxy Abell 1835, Galaxy Abell 1835 IR1916, or simply The Abell) was a candidate for being the most distant galaxy ever observed, although that claim has not been verified by additional observations.

New!!: Galaxy cluster and Abell 1835 IR1916 · See more »

Abell 1991

Abell 1991 is a galaxy cluster in the Abell catalogue.

New!!: Galaxy cluster and Abell 1991 · See more »

Abell 2029

Abell 2029 or A2029 is a large cluster of galaxies away in the constellation Virgo.

New!!: Galaxy cluster and Abell 2029 · See more »

Abell 2061

Abell 2061 is a galaxy cluster in the constellation of Corona Borealis.

New!!: Galaxy cluster and Abell 2061 · See more »

Abell 2065

Abell 2065 is a highly concentrated galaxy cluster in the constellation of Corona Borealis containing over 400 member galaxies, the brightest of which are 16th magnitude.

New!!: Galaxy cluster and Abell 2065 · See more »

Abell 2067

Abell 2067 is a galaxy cluster in the constellation of Corona Borealis.

New!!: Galaxy cluster and Abell 2067 · See more »

Abell 2142

Abell 2142, or A2142, is a huge, X-ray luminous galaxy cluster in the constellation Corona Borealis.

New!!: Galaxy cluster and Abell 2142 · See more »

Abell 2147

Abell 2147 is a galaxy cluster in the Abell catalogue.

New!!: Galaxy cluster and Abell 2147 · See more »

Abell 2162

Abell 2162 is a galaxy cluster in the Abell catalogue located in the constellation Corona Borealis.

New!!: Galaxy cluster and Abell 2162 · See more »

Abell 2163

Abell 2163 is one of the richest and most distant of the clusters of galaxies found in the Abell catalogue.

New!!: Galaxy cluster and Abell 2163 · See more »

Abell 2199

Abell 2199 is a galaxy cluster in the Abell catalogue featuring a brightest cluster galaxy NGC 6166, a cD galaxy.

New!!: Galaxy cluster and Abell 2199 · See more »

Abell 2218

Abell 2218 is a cluster of galaxies about 2 billion light-years away in the constellation Draco.

New!!: Galaxy cluster and Abell 2218 · See more »

Abell 222

Abell 222 is a galaxy cluster in the constellation of Cetus.

New!!: Galaxy cluster and Abell 222 · See more »

Abell 223

Abell 223 is a galaxy cluster.

New!!: Galaxy cluster and Abell 223 · See more »

Abell 2256

Abell 2256 is a rich nearby galaxy cluster in the Abell catalogue that exhibits a population of ∼ 100 – 200 kpc long steep spectrum synchrotron filaments surrounding the cluster center with significant evidence of merger activity deduced by the presence of two separate X-ray peaks in the X-ray surface brightness distribution.

New!!: Galaxy cluster and Abell 2256 · See more »

Abell 2261

Abell 2261 is one of 25 galaxy clusters being studied as part of the Cluster Lensing And Supernova survey with Hubble (CLASH) program, a major project to build a library of scientific data on lensing clusters.

New!!: Galaxy cluster and Abell 2261 · See more »

Abell 2390

Abell 2390 is a galaxy cluster in the Abell catalogue.

New!!: Galaxy cluster and Abell 2390 · See more »

Abell 262

Abell 262 is a galaxy cluster in the Abell catalogue.

New!!: Galaxy cluster and Abell 262 · See more »

Abell 2667

Abell 2667 is a galaxy cluster.

New!!: Galaxy cluster and Abell 2667 · See more »

Abell 2744

Abell 2744, nicknamed Pandora's Cluster, is a giant galaxy cluster resulting from the simultaneous pile-up of at least four separate, smaller galaxy clusters that took place over a span of 350 million years.

New!!: Galaxy cluster and Abell 2744 · See more »

Abell 3266

Abell 3266 is a galaxy cluster in the southern sky.

New!!: Galaxy cluster and Abell 3266 · See more »

Abell 370

Abell 370 is a galaxy cluster located approximately 4 billion light-years away from the Earth (at redshift z.

New!!: Galaxy cluster and Abell 370 · See more »

Abell 3742

Abell 3742 is a galaxy cluster located around 200 million light years (61 Mpc) from Earth in the constellation Indus.

New!!: Galaxy cluster and Abell 3742 · See more »

Abell 383

Abell 383 is a galaxy cluster in the Abell catalogue.

New!!: Galaxy cluster and Abell 383 · See more »

Abell 39

Abell 39 is a low surface brightness planetary nebula in the constellation of Hercules.

New!!: Galaxy cluster and Abell 39 · See more »

Abell 400

Abell 400 is a galaxy cluster which contains the galaxy NGC 1128 with two supermassive black holes (3C 75) spiraling towards merger.

New!!: Galaxy cluster and Abell 400 · See more »

Abell 478

Abell 478 is a galaxy cluster in the Abell catalogue.

New!!: Galaxy cluster and Abell 478 · See more »

Abell 520

The Abell 520 galaxy cluster possesses an unusual substructure resulting from a major merger.

New!!: Galaxy cluster and Abell 520 · See more »

Abell 569

Abell 569 is a galaxy cluster in the northern constellation of Lynx.

New!!: Galaxy cluster and Abell 569 · See more »

Abell 576

Abell 576 is a galaxy cluster in the constellation Lynx.

New!!: Galaxy cluster and Abell 576 · See more »

Abell 665

Abell 665 is a galaxy cluster in the Abell catalogue in the constellation Ursa Major.

New!!: Galaxy cluster and Abell 665 · See more »

Abell 671

Abell 671 is a galaxy cluster in the constellation Cancer.

New!!: Galaxy cluster and Abell 671 · See more »

Abell 754

Abell 754 is a galaxy cluster in the constellation Hydra that was formed from the collision of two smaller clusters.

New!!: Galaxy cluster and Abell 754 · See more »

Abell 907

Abell 907 is a galaxy cluster in the Abell catalogue.

New!!: Galaxy cluster and Abell 907 · See more »

Abell catalogue

The Abell catalog of rich clusters of galaxies is an all-sky catalog of 4,073 rich galaxy clusters of nominal redshift z ≤ 0.2.

New!!: Galaxy cluster and Abell catalogue · See more »

Abell S1077

Abell S1077 is a galaxy cluster located in the constellation Piscis Austrinus.

New!!: Galaxy cluster and Abell S1077 · See more »

Abell S740

The Abell S740 is a cluster of galaxies identified in the Abell catalogue of southern rich clusters of galaxies.

New!!: Galaxy cluster and Abell S740 · See more »

Accelerating expansion of the universe

The accelerating expansion of the universe is the observation that the universe appears to be expanding at an increasing rate, so that the velocity at which a distant galaxy is receding from the observer is continuously increasing with time.

New!!: Galaxy cluster and Accelerating expansion of the universe · See more »

AMiBA

The Yuan-Tseh Lee Array for Microwave Background Anisotropy, also known as the Array for Microwave Background Anisotropy (AMiBA), is a radio telescope designed to observe the cosmic microwave background and the Sunyaev-Zel'dovich effect in clusters of galaxies.

New!!: Galaxy cluster and AMiBA · See more »

Amundsen–Scott South Pole Station

The Amundsen–Scott South Pole Station is a United States scientific research station at the South Pole, the southernmost place on the Earth.

New!!: Galaxy cluster and Amundsen–Scott South Pole Station · See more »

Andrew Fabian

Andrew Christopher Fabian, OBE, FRS (born 20 February 1948) is a British astronomer and astrophysicist.

New!!: Galaxy cluster and Andrew Fabian · See more »

Andrew R. Liddle

Andrew R. Liddle (born 9 June 1965) is Professor of astrophysics at the Royal Observatory Edinburgh, as of 2013.

New!!: Galaxy cluster and Andrew R. Liddle · See more »

Anemic galaxy

An anemic galaxy is a type of spiral galaxy characterized by a low contrast between its spiral arms and its disk.

New!!: Galaxy cluster and Anemic galaxy · See more »

Antlia

Antlia (from Ancient Greek ἀντλία) is a constellation in the Southern Celestial Hemisphere.

New!!: Galaxy cluster and Antlia · See more »

Antlia Cluster

The Antlia Cluster (or Abell S0636) is a cluster of galaxies located in the Hydra-Centaurus Supercluster.

New!!: Galaxy cluster and Antlia Cluster · See more »

Arcus (satellite)

Arcus is a proposed X-ray space observatory proposed to NASA's Explorer program, Medium Explorer (MIDEX) class.

New!!: Galaxy cluster and Arcus (satellite) · See more »

Astromundus

Astromundus is a 2-years Erasmus Mundus masters course in Astronomy and Astrophysics.

New!!: Galaxy cluster and Astromundus · See more »

Astronomical spectroscopy

Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light and radio, which radiates from stars and other celestial objects.

New!!: Galaxy cluster and Astronomical spectroscopy · See more »

Astrophysical plasma

An astrophysical plasma is a plasma (highly ionized gas) that occurs beyond the solar system.

New!!: Galaxy cluster and Astrophysical plasma · See more »

Astrophysical X-ray source

Astrophysical X-ray sources are astronomical objects with physical properties which result in the emission of X-rays.

New!!: Galaxy cluster and Astrophysical X-ray source · See more »

Astrophysics Research Institute

The Astrophysics Research Institute (ARI) is an astronomy and astrophysics research institute located in Merseyside, UK.

New!!: Galaxy cluster and Astrophysics Research Institute · See more »

Atacama Cosmology Telescope

The Atacama Cosmology Telescope (ACT) is a six-metre telescope on Cerro Toco in the Atacama Desert in the north of Chile, near the Llano de Chajnantor Observatory.

New!!: Galaxy cluster and Atacama Cosmology Telescope · See more »

Balmer series

The Balmer series or Balmer lines in atomic physics, is the designation of one of a set of six named series describing the spectral line emissions of the hydrogen atom.

New!!: Galaxy cluster and Balmer series · See more »

Bautz–Morgan classification

The Bautz–Morgan classification was developed in 1970 by Laura P. Bautz and William Wilson Morgan to categorize galaxy clusters based on their morphology.

New!!: Galaxy cluster and Bautz–Morgan classification · See more »

Big Bang

The Big Bang theory is the prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution.

New!!: Galaxy cluster and Big Bang · See more »

Big Crunch

The Big Crunch is one possible scenario for the ultimate fate of the universe, in which the metric expansion of space eventually reverses and the universe recollapses, ultimately causing the cosmic scale factor to reach zero or causing a reformation of the universe starting with another Big Bang.

New!!: Galaxy cluster and Big Crunch · See more »

Brightest cluster galaxy

A brightest cluster galaxy (BCG) is defined as the brightest galaxy in a cluster of galaxies.

New!!: Galaxy cluster and Brightest cluster galaxy · See more »

Bulge (astronomy)

In astronomy, a bulge is a tightly packed group of stars within a larger formation.

New!!: Galaxy cluster and Bulge (astronomy) · See more »

Bullet Cluster

The Bullet Cluster (1E 0657-558) consists of two colliding clusters of galaxies.

New!!: Galaxy cluster and Bullet Cluster · See more »

Bullet Galaxy

The Bullet Galaxy (RXC J2359.3-6042 CC) is a galaxy in the galaxy cluster RXC J2359.3-6042 (Abell 4067 or ACO 4067).

New!!: Galaxy cluster and Bullet Galaxy · See more »

Bullet Group

The Bullet Group (SL2S J08544-0121) is a newly merging group of galaxies, a merger between two galaxy groups to form a new larger one, that recently had a high speed collision between the two component groups.

New!!: Galaxy cluster and Bullet Group · See more »

Carina (constellation)

Carina is a constellation in the southern sky.

New!!: Galaxy cluster and Carina (constellation) · See more »

Catalogue of Galaxies and Clusters of Galaxies

The Catalogue of Galaxies and of Clusters of Galaxies (pr CGCG) was compiled by Fritz Zwicky in 1961–68.

New!!: Galaxy cluster and Catalogue of Galaxies and Clusters of Galaxies · See more »

Centaurus

Centaurus is a bright constellation in the southern sky.

New!!: Galaxy cluster and Centaurus · See more »

Centre for Astrophysics of the University of Porto

The Centro de Astrofísica da Universidade do Porto (Centre for Astrophysics of the University of Porto - CAUP) is the largest astronomy research institute in Portugal, with more than 60 people.

New!!: Galaxy cluster and Centre for Astrophysics of the University of Porto · See more »

Cetus

Cetus is a constellation.

New!!: Galaxy cluster and Cetus · See more »

Chandra X-ray Observatory

The Chandra X-ray Observatory (CXO), previously known as the Advanced X-ray Astrophysics Facility (AXAF), is a Flagship-class space observatory launched on STS-93 by NASA on July 23, 1999.

New!!: Galaxy cluster and Chandra X-ray Observatory · See more »

Chronology of the universe

The chronology of the universe describes the history and future of the universe according to Big Bang cosmology.

New!!: Galaxy cluster and Chronology of the universe · See more »

CL J1001+0220

CL J1001+0220 is, as of 2016, the most distant known galaxy cluster.

New!!: Galaxy cluster and CL J1001+0220 · See more »

CL0024+17

The cluster CL0024+17 is a cluster of galaxies located in Pisces, and about 4 billion light years distant.

New!!: Galaxy cluster and CL0024+17 · See more »

CLG

CLG could refer to.

New!!: Galaxy cluster and CLG · See more »

Cluster

Cluster may refer to.

New!!: Galaxy cluster and Cluster · See more »

Cluster diagram

A Cluster diagram or clustering diagram is a general type of diagram, which represents some kind of cluster.

New!!: Galaxy cluster and Cluster diagram · See more »

Cluster Lensing and Supernova survey with Hubble

The Cluster Lensing And Supernova survey with Hubble (CLASH) is a multi-wavelength census of 25 massive galaxy clusters with Advanced Camera for Surveys (ACS) and Wide Field Camera 3 (WFC3) instruments of Hubble Space Telescope over a 3.5 year period (2010 - 2013).

New!!: Galaxy cluster and Cluster Lensing and Supernova survey with Hubble · See more »

Clyde Tombaugh

Clyde William Tombaugh (February 4, 1906January 17, 1997) was an American astronomer.

New!!: Galaxy cluster and Clyde Tombaugh · See more »

Cold dark matter

In cosmology and physics, cold dark matter (CDM) is a hypothetical form of dark matter whose particles moved slowly compared to the speed of light (the cold in CDM) since the universe was approximately one year old (a time when the cosmic particle horizon contained the mass of one typical galaxy); and interact very weakly with ordinary matter and electromagnetic radiation (the dark in CDM).

New!!: Galaxy cluster and Cold dark matter · See more »

Color–color diagram

In astronomy, color–color diagrams are a means of comparing the apparent magnitudes of stars at different wavelengths.

New!!: Galaxy cluster and Color–color diagram · See more »

Coma Berenices

Coma Berenices is an ancient asterism in the northern sky which has been defined as one of the 88 modern constellations.

New!!: Galaxy cluster and Coma Berenices · See more »

Coma Cluster

The Coma Cluster (Abell 1656) is a large cluster of galaxies that contains over 1,000 identified galaxies.

New!!: Galaxy cluster and Coma Cluster · See more »

Coma I

The Coma I Group is a group of galaxies located about away in the constellation Coma Berenices.

New!!: Galaxy cluster and Coma I · See more »

Comet Galaxy

The Comet Galaxy, a spiral galaxy located 3.2 billion light-years from Earth, in the galaxy cluster Abell 2667, was found with the Hubble Space Telescope.

New!!: Galaxy cluster and Comet Galaxy · See more »

Compton scattering

Compton scattering, discovered by Arthur Holly Compton, is the scattering of a photon by a charged particle, usually an electron.

New!!: Galaxy cluster and Compton scattering · See more »

Cooling flow

A cooling flow occurs according to the theory that the intracluster medium (ICM) in the centres of galaxy clusters should be rapidly cooling at the rate of tens to thousands of solar masses per year.

New!!: Galaxy cluster and Cooling flow · See more »

Corona Borealis

Corona Borealis is a small constellation in the Northern Celestial Hemisphere.

New!!: Galaxy cluster and Corona Borealis · See more »

Cosimo Bambi

Cosimo Bambi (born 1980, Florence, Italy) is an Italian relativist and cosmologist who is currently a professor of Physics at Fudan University in Shanghai, China.

New!!: Galaxy cluster and Cosimo Bambi · See more »

Cosmic distance ladder

The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects.

New!!: Galaxy cluster and Cosmic distance ladder · See more »

Cosmic microwave background

The cosmic microwave background (CMB, CMBR) is electromagnetic radiation as a remnant from an early stage of the universe in Big Bang cosmology.

New!!: Galaxy cluster and Cosmic microwave background · See more »

Cosmological perturbation theory

In physical cosmology, cosmological perturbation theory is the theory by which the evolution of structure is understood in the big bang model.

New!!: Galaxy cluster and Cosmological perturbation theory · See more »

Cygnus (constellation)

Cygnus is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan.

New!!: Galaxy cluster and Cygnus (constellation) · See more »

Dark Energy Survey

The Dark Energy Survey (DES) is a visible and near-infrared survey that aims to probe the dynamics of the expansion of the Universe and the growth of large-scale structure.

New!!: Galaxy cluster and Dark Energy Survey · See more »

Dark flow

In astrophysics, dark flow is a possible non-random component of the peculiar velocity of galaxy clusters.

New!!: Galaxy cluster and Dark flow · See more »

Dark matter

Dark matter is a theorized form of matter that is thought to account for approximately 80% of the matter in the universe, and about a quarter of its total energy density.

New!!: Galaxy cluster and Dark matter · See more »

Dark Universe Observatory

The Dark Universe Observatory (DUO) is a planned NASA space-based telescope.

New!!: Galaxy cluster and Dark Universe Observatory · See more »

Density contrast

The Density Contrast is a parameter used in galaxy formation to indicate where there are local enhancements in matter density.

New!!: Galaxy cluster and Density contrast · See more »

Diffusion damping

In modern cosmological theory, diffusion damping, also called photon diffusion damping, is a physical process which reduced density inequalities (anisotropies) in the early universe, making the universe itself and the cosmic microwave background radiation (CMB) more uniform.

New!!: Galaxy cluster and Diffusion damping · See more »

Draco (constellation)

Draco is a constellation in the far northern sky.

New!!: Galaxy cluster and Draco (constellation) · See more »

Dwarf spiral galaxy

A dwarf spiral galaxy is the dwarf version of a spiral galaxy.

New!!: Galaxy cluster and Dwarf spiral galaxy · See more »

El Gordo (galaxy cluster)

El Gordo (lit. The Fat One) (ACT-CL J0102-4915 or SPT-CL J0102-4915) is the largest distant galaxy cluster observed at its distance or beyond, as of 2011.

New!!: Galaxy cluster and El Gordo (galaxy cluster) · See more »

Elliptical galaxy

An elliptical galaxy is a type of galaxy having an approximately ellipsoidal shape and a smooth, nearly featureless image.

New!!: Galaxy cluster and Elliptical galaxy · See more »

Entropy (astrophysics)

In astrophysics, what is referred to as "entropy" is actually the adiabatic constant derived as follows.

New!!: Galaxy cluster and Entropy (astrophysics) · See more »

Eridanus Cluster

The Eridanus Cluster is a galaxy cluster roughly from Earth, containing about 73 main galaxies and about 200 total galaxies.

New!!: Galaxy cluster and Eridanus Cluster · See more »

Eridanus Group

The Eridanus Group, sometimes called the Eridanus Cloud, is a nearby loose grouping of galaxies at a mean distance of approximately 75 Mly (23 ± 2 Mpc) in the constellation Eridanus.

New!!: Galaxy cluster and Eridanus Group · See more »

Etherington's reciprocity theorem

The Etherington's distance-duality equation is the relationship between the luminosity distance of standard candles and the angular diameter distance.

New!!: Galaxy cluster and Etherington's reciprocity theorem · See more »

EXOSAT

The European X-ray Observatory Satellite (EXOSAT), originally named HELOS, was an X-ray telescope operational from May 1983 until April 1986 and in that time made 1780 observations in the X-ray band of most classes of astronomical object including active galactic nuclei, stellar coronae, cataclysmic variables, white dwarfs, X-ray binaries, clusters of galaxies, and supernova remnants.

New!!: Galaxy cluster and EXOSAT · See more »

Expansion of the universe

The expansion of the universe is the increase of the distance between two distant parts of the universe with time.

New!!: Galaxy cluster and Expansion of the universe · See more »

Extragalactic astronomy

Extragalactic astronomy is the branch of astronomy concerned with objects outside the Milky Way galaxy.

New!!: Galaxy cluster and Extragalactic astronomy · See more »

Field galaxy

A field galaxy is a galaxy that does not belong to a larger cluster of galaxies and hence is gravitationally alone.

New!!: Galaxy cluster and Field galaxy · See more »

Fornax

Fornax is a constellation in the southern sky, partly ringed by the celestial river Eridanus.

New!!: Galaxy cluster and Fornax · See more »

Fornax Cluster

The Fornax Cluster is a cluster of galaxies lying at a distance of 19 megaparsecs (62 million light-years).

New!!: Galaxy cluster and Fornax Cluster · See more »

G350.1-0.3

G350.1-0.3 is a supernova remnant which is located in the constellation Scorpius.

New!!: Galaxy cluster and G350.1-0.3 · See more »

Galactic orientation

Galactic clusters are gravitationally bound large-scale structures of multiple galaxies.

New!!: Galaxy cluster and Galactic orientation · See more »

Galaxy

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.

New!!: Galaxy cluster and Galaxy · See more »

Galaxy Cluster IDCS 1426

IDCS J1426.5+3508 (IDCS 1426 for short) is an extremely massive young galaxy cluster.

New!!: Galaxy cluster and Galaxy Cluster IDCS 1426 · See more »

Galaxy filament

The distribution reveals fine, filamentary structures.

New!!: Galaxy cluster and Galaxy filament · See more »

Galaxy formation and evolution

The study of galaxy formation and evolution is concerned with the processes that formed a heterogeneous universe from a homogeneous beginning, the formation of the first galaxies, the way galaxies change over time, and the processes that have generated the variety of structures observed in nearby galaxies.

New!!: Galaxy cluster and Galaxy formation and evolution · See more »

Galaxy group

A galaxy group or group of galaxies (GrG) is an aggregation of galaxies comprising about 50 or fewer gravitationally bound members, each at least as luminous as the Milky Way (about 1010 times the luminosity of the Sun); collections of galaxies larger than groups that are first-order clustering are called galaxy clusters.

New!!: Galaxy cluster and Galaxy group · See more »

Galaxy rotation curve

The rotation curve of a disc galaxy (also called a velocity curve) is a plot of the orbital speeds of visible stars or gas in that galaxy versus their radial distance from that galaxy's centre.

New!!: Galaxy cluster and Galaxy rotation curve · See more »

Galaxy Zoo

Galaxy Zoo is a crowdsourced astronomy project which invites people to assist in the morphological classification of large numbers of galaxies.

New!!: Galaxy cluster and Galaxy Zoo · See more »

Gale Bruno van Albada

Gale Bruno van Albada (28 March 1911, Amsterdam – 18 December 1972, Amsterdam) was a Dutch astronomer, known for his orbital observations of binary stars and studies on the evolution of galaxy clusters.

New!!: Galaxy cluster and Gale Bruno van Albada · See more »

Gamma-ray burst

In gamma-ray astronomy, gamma-ray bursts (GRBs) are extremely energetic explosions that have been observed in distant galaxies.

New!!: Galaxy cluster and Gamma-ray burst · See more »

George Blumenthal

George R. Blumenthal (born 1945) is an American astrophysicist, astronomer, professor, and academic administrator.

New!!: Galaxy cluster and George Blumenthal · See more »

George Smoot

George Fitzgerald Smoot III (born February 20, 1945) is an American astrophysicist, cosmologist, Nobel laureate, and one of two contestants to win the 1 million prize on Are You Smarter than a 5th Grader?.

New!!: Galaxy cluster and George Smoot · See more »

Giampaolo Vettolani

Giampaolo Vettolani (born 27 December 1950) is an Italian astrophysicist and the scientific director of The National Institute for Astrophysics (INAF) in Rome.

New!!: Galaxy cluster and Giampaolo Vettolani · See more »

Giant Void

The Giant Void (also known as the Giant Void in NGH, Canes Venatici Supervoid, and AR-Lp 36) is an extremely large region of space of underdensity of galaxies within the constellation Canes Venatici.

New!!: Galaxy cluster and Giant Void · See more »

Globular cluster

A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.

New!!: Galaxy cluster and Globular cluster · See more »

Gravitational lens

A gravitational lens is a distribution of matter (such as a cluster of galaxies) between a distant light source and an observer, that is capable of bending the light from the source as the light travels towards the observer.

New!!: Galaxy cluster and Gravitational lens · See more »

Great Attractor

The Great Attractor is an apparent gravitational anomaly in intergalactic space at the center of the local Laniakea Supercluster, in which the Milky Way is located, in the so-called Zone of Avoidance that is notoriously difficult to observe in visible wavelengths due to the obscuring effects of our own galactic plane.

New!!: Galaxy cluster and Great Attractor · See more »

György Paál

György Paál (Budapest, 1934 – Budapest, 1992)http://members.iif.hu/visontay/ponticulus/rovatok/limes/bartha-magyar-csillagaszok.html was a Hungarian astronomer and cosmologist.

New!!: Galaxy cluster and György Paál · See more »

H II region

An H II region or HII region is a region of interstellar atomic hydrogen that is ionized.

New!!: Galaxy cluster and H II region · See more »

Heat death of the universe

The heat death of the universe is a plausible ultimate fate of the universe in which the universe has diminished to a state of no thermodynamic free energy and therefore can no longer sustain processes that increase entropy.

New!!: Galaxy cluster and Heat death of the universe · See more »

Henry Lin

Henry Wanjune Lin (born 1995) is an American student who won the $50,000 Intel Young Scientist award, the second-highest award at the 2013 Intel Science and Engineering Fair for his work with MIT professor Michael McDonald on simulations of galaxy clusters.

New!!: Galaxy cluster and Henry Lin · See more »

Hercules Superclusters

The Hercules Superclusters (SCl 160) refers to a set of two nearby superclusters of galaxies.

New!!: Galaxy cluster and Hercules Superclusters · See more »

Holmberg 15A

Holmberg 15A is a supergiant elliptical galaxy and the central dominant galaxy of the Abell 85 galaxy cluster in the constellation Cetus, about 700 million light-years from Earth.

New!!: Galaxy cluster and Holmberg 15A · See more »

Hot dark matter

Hot dark matter (HDM) is a theoretical form of dark matter which consists of particles that travel with ultrarelativistic velocities.

New!!: Galaxy cluster and Hot dark matter · See more »

Hubble Heritage Project

The Hubble Heritage Project was founded by a group of astronomers in 1998.

New!!: Galaxy cluster and Hubble Heritage Project · See more »

Hubble's law

Hubble's law is the name for the observation in physical cosmology that.

New!!: Galaxy cluster and Hubble's law · See more »

Hydra Cluster

The Hydra Cluster (or Abell 1060) is a galaxy cluster that contains 157 bright galaxies, appearing in the constellation Hydra.

New!!: Galaxy cluster and Hydra Cluster · See more »

Hydrostatic equilibrium

In fluid mechanics, a fluid is said to be in hydrostatic equilibrium or hydrostatic balance when it is at rest, or when the flow velocity at each point is constant over time.

New!!: Galaxy cluster and Hydrostatic equilibrium · See more »

Hypercompact stellar system

A hypercompact stellar system (HCSS) is a dense cluster of stars around a supermassive black hole that has been ejected from the center of its host galaxy.

New!!: Galaxy cluster and Hypercompact stellar system · See more »

IC 1101

IC 1101 is a supergiant elliptical galaxy at the center of the Abell 2029 galaxy cluster, approximately 320 megaparsecs (1.04 billion light-years) from Earth.

New!!: Galaxy cluster and IC 1101 · See more »

Inhomogeneous cosmology

In cosmology and general relativity, inhomogeneous cosmology in the most general sense (totally inhomogeneous universe) is modelling the universe as a whole with the spacetime which does not possess any spacetime symmetries.

New!!: Galaxy cluster and Inhomogeneous cosmology · See more »

Institute of Astronomy, Cambridge

The Institute of Astronomy (IoA) is the largest of the three astronomy departments in the University of Cambridge, and one of the largest astronomy sites in the UK.

New!!: Galaxy cluster and Institute of Astronomy, Cambridge · See more »

Interacting galaxy

Interacting galaxies (colliding galaxies) are galaxies whose gravitational fields result in a disturbance of one another.

New!!: Galaxy cluster and Interacting galaxy · See more »

International X-ray Observatory

The International X-ray Observatory (IXO) is a cancelled X-ray telescope that was to be launched in 2021 as a joint effort by NASA, the European Space Agency (ESA), and the Japan Aerospace Exploration Agency (JAXA).

New!!: Galaxy cluster and International X-ray Observatory · See more »

Intracluster medium

In astronomy, the intracluster medium (ICM) is the superheated plasma that permeates a galaxy cluster.

New!!: Galaxy cluster and Intracluster medium · See more »

IRC 0218

The galaxy cluster IRC 0218 (also known as XMM-LSS J02182−05102) hosts the most distant strong gravitational lensing galaxy currently known at a redshift of z.

New!!: Galaxy cluster and IRC 0218 · See more »

Jellyfish galaxy

A jellyfish galaxy is a type of galaxy found in galaxy clusters.

New!!: Galaxy cluster and Jellyfish galaxy · See more »

Jerzy Neyman

Jerzy Neyman (April 16, 1894 – August 5, 1981), born Jerzy Spława-Neyman, was a Polish mathematician and statistician who spent the first part of his professional career at various institutions in Warsaw, Poland and then at University College London, and the second part at the University of California, Berkeley.

New!!: Galaxy cluster and Jerzy Neyman · See more »

Laniakea Supercluster

The Laniakea Supercluster (Laniakea; also called Local Supercluster or Local SCl or sometimes Lenakaeia) is the galaxy supercluster that is home to the Milky Way and approximately 100,000 other nearby galaxies.

New!!: Galaxy cluster and Laniakea Supercluster · See more »

Large Binocular Telescope

The Large Binocular Telescope (LBT) is an optical telescope for astronomy located on Mount Graham, in the Pinaleno Mountains of southeastern Arizona, United States.

New!!: Galaxy cluster and Large Binocular Telescope · See more »

Large Millimeter Telescope

The Large Millimetre Telescope (LMT) (Gran Telescopio Milimétrico, or GTM) is the world's largest single-aperture telescope in its frequency range, built for observing radio waves in the wave lengths from approximately 0.85 to 4 mm.

New!!: Galaxy cluster and Large Millimeter Telescope · See more »

LBG-2377

LBG-2377 is the most distant galaxy merger discovered, as of 2008, at a distance of 11.4 billion light years.

New!!: Galaxy cluster and LBG-2377 · See more »

Leo Cluster

The Leo Cluster (Abell 1367) is a galaxy cluster about 330 million light-years distant (z.

New!!: Galaxy cluster and Leo Cluster · See more »

Leo Supercluster

The Leo Supercluster is a supercluster in the Northern Celestial Hemisphere that stretches across the constellations Ursa Major and Leo.

New!!: Galaxy cluster and Leo Supercluster · See more »

Light-year

The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.

New!!: Galaxy cluster and Light-year · See more »

List of Abell clusters

The Abell catalogue is a catalogue of approximately 4,000 galaxy clusters with at least 30 members, almost complete to a redshift of z.

New!!: Galaxy cluster and List of Abell clusters · See more »

List of astronomy acronyms

This is a compilation of initialisms and acronyms commonly used in astronomy.

New!!: Galaxy cluster and List of astronomy acronyms · See more »

List of dates predicted for apocalyptic events

Predictions of apocalyptic events that would result in the extinction of humanity, a collapse of civilization, or the destruction of the planet have been made since at least the beginning of the Common Era.

New!!: Galaxy cluster and List of dates predicted for apocalyptic events · See more »

List of fractals by Hausdorff dimension

Benoit Mandelbrot has stated that "A fractal is by definition a set for which the Hausdorff-Besicovitch dimension strictly exceeds the topological dimension." Presented here is a list of fractals ordered by increasing Hausdorff dimension, with the purpose of visualizing what it means for a fractal to have a low or a high dimension.

New!!: Galaxy cluster and List of fractals by Hausdorff dimension · See more »

List of galaxy groups and clusters

This page lists some galaxy groups and galaxy clusters.

New!!: Galaxy cluster and List of galaxy groups and clusters · See more »

List of quasars

This is a list of quasars.

New!!: Galaxy cluster and List of quasars · See more »

List of space telescopes

This list of space telescopes (astronomical space observatories) is grouped by major frequency ranges: gamma ray, x-ray, ultraviolet, visible, infrared, microwave and radio.

New!!: Galaxy cluster and List of space telescopes · See more »

List of the most distant astronomical objects

This article documents the most distant astronomical objects so far discovered, and the time periods in which they were so classified.

New!!: Galaxy cluster and List of the most distant astronomical objects · See more »

List of voids

This is a list of voids.

New!!: Galaxy cluster and List of voids · See more »

Lists of astronomical objects

This is a list of lists, grouped by type of astronomical object.

New!!: Galaxy cluster and Lists of astronomical objects · See more »

Local Group

The Local Group is the galaxy group that includes the Milky Way.

New!!: Galaxy cluster and Local Group · See more »

Lynx Arc

The Lynx Arc was discovered in 2003 and is considered to be the hottest known star-birthing region in the Universe as of October 2003.

New!!: Galaxy cluster and Lynx Arc · See more »

MACS J0025.4-1222

MACS J0025.4-1222 is a galaxy cluster created by the collision of two galaxy clusters, and is part of the MAssive Cluster Survey (MACS).

New!!: Galaxy cluster and MACS J0025.4-1222 · See more »

MACS J0416.1-2403

MACS J0416.1-2403 is a galaxy cluster at a redshift of z.

New!!: Galaxy cluster and MACS J0416.1-2403 · See more »

MACS J0647+7015

MACS J0647.7+7015 is a galaxy cluster with a redshift z.

New!!: Galaxy cluster and MACS J0647+7015 · See more »

MACS J0717.5+3745

MACS J0717.5+3745 (MACS J0717 or MACS 0717 for short) is a large galaxy cluster located 5.4 billion light years away in the constellation Auriga, appearing in the MAssive Cluster Survey (MACS).

New!!: Galaxy cluster and MACS J0717.5+3745 · See more »

MACS J1149 Lensed Star 1

MACS J1149 Lensed Star 1, also known as Icarus,Other names include LS1, MACS J1149 LS1, MACS J1149 Lensed Star 1 (LS1) and MACS J1149+2223 Lensed Star 1 is a blue supergiant observed through a gravitational lens.

New!!: Galaxy cluster and MACS J1149 Lensed Star 1 · See more »

MACS0647-JD

MACS0647-JD is a candidate, based on a photometric redshift estimate, for the farthest known galaxy from Earth at a redshift of about z.

New!!: Galaxy cluster and MACS0647-JD · See more »

Mass-to-light ratio

In astrophysics and physical cosmology the mass to light ratio, normally designated with the Greek upsilon symbol \Upsilon, is the quotient between the total mass of a spatial volume (typically on the scales of a galaxy or a cluster) and its luminosity.

New!!: Galaxy cluster and Mass-to-light ratio · See more »

MAssive Cluster Survey

The MAssive Cluster Survey (MACS) compiled and characterized a sample of very X-ray luminous (and thus, by inference, massive), distant clusters of galaxies.

New!!: Galaxy cluster and MAssive Cluster Survey · See more »

Max Planck Institute for Astrophysics

The Max Planck Institute for Astrophysics (MPA) is a research institute located in Garching, just north of Munich, Bavaria, Germany.

New!!: Galaxy cluster and Max Planck Institute for Astrophysics · See more »

Megan Donahue

Megan Donahue is an American astronomer who studies galaxies and galaxy clusters.

New!!: Galaxy cluster and Megan Donahue · See more »

Messier 49

Messier 49 (also known as M 49 or NGC 4472) is an elliptical galaxy located about away in the equatorial constellation of Virgo.

New!!: Galaxy cluster and Messier 49 · See more »

Messier 98

Messier 98, also known as M98 or NGC 4192, is an intermediate spiral galaxy located about 44.4 million light-years away in the constellation Coma Berenices, about 6° to the east of the bright star Denebola.

New!!: Galaxy cluster and Messier 98 · See more »

Milky Way

The Milky Way is the galaxy that contains our Solar System.

New!!: Galaxy cluster and Milky Way · See more »

Modified Newtonian dynamics

Modified Newtonian dynamics (MOND) is a theory that proposes a modification of Newton's laws to account for observed properties of galaxies.

New!!: Galaxy cluster and Modified Newtonian dynamics · See more »

MS 0735.6+7421

MS 0735.6+7421 is a galaxy cluster located in the constellation Camelopardalis, approximately 2.6 billion light-years away.

New!!: Galaxy cluster and MS 0735.6+7421 · See more »

Musket Ball Cluster

The Musket Ball Cluster (DLSCL J0916.2+2951) is a galaxy cluster that exhibits separation between its baryonic matter and dark matter components.

New!!: Galaxy cluster and Musket Ball Cluster · See more »

Neta Bahcall

Neta A. Bahcall (born 1942) is an astrophysicist and cosmologist specializing in dark matter, the structure of the universe, quasars, and the formation of galaxies.

New!!: Galaxy cluster and Neta Bahcall · See more »

NGC 1128

NGC 1128 is a "dumbbell galaxy" in the Abell 400 galaxy cluster.

New!!: Galaxy cluster and NGC 1128 · See more »

NGC 1316

NGC 1316 (also known as Fornax A) is a lenticular galaxy about 60 million light-years away in the constellation Fornax It is a radio galaxy and at 1400 MHz is the fourth-brightest radio source in the sky.

New!!: Galaxy cluster and NGC 1316 · See more »

NGC 3607

This elliptical galaxy is part of the Leo II Group (NGC 3607 Group) of galaxies.

New!!: Galaxy cluster and NGC 3607 · See more »

NGC 4492

NGC 4492 is a spiral galaxy located about 90 million light-years away in the constellation Virgo.

New!!: Galaxy cluster and NGC 4492 · See more »

NGC 4522

NGC 4522 is an edge-on spiral galaxy located about 60 million light-years away within the Virgo Cluster in the constellation Virgo.

New!!: Galaxy cluster and NGC 4522 · See more »

NGC 4598

NGC 4598 is a barred lenticular galaxy located in the constellation Virgo.

New!!: Galaxy cluster and NGC 4598 · See more »

NGC 4696

NGC 4696 is an elliptical galaxy.

New!!: Galaxy cluster and NGC 4696 · See more »

NGC 5962

NGC 5962 is a spiral galaxy in the constellation Serpens Caput and is the brightest member of the Serpens galaxy cluster.

New!!: Galaxy cluster and NGC 5962 · See more »

Nicholas Mayall

Nicholas Ulrich Mayall (May 9, 1906 – January 5, 1993) was an American observational astronomer.

New!!: Galaxy cluster and Nicholas Mayall · See more »

Nick Kaiser

Nicholas (Nick) Kaiser (born 15 September 1954) is a British cosmologist.

New!!: Galaxy cluster and Nick Kaiser · See more »

Noam Soker

Noam Soker is an Israeli theoretical astrophysicist.

New!!: Galaxy cluster and Noam Soker · See more »

Norma (constellation)

Norma is a small constellation in the Southern Celestial Hemisphere between Ara and Lupus, one of twelve drawn up in the 18th century by French astronomer Nicolas-Louis de Lacaille and one of several depicting scientific instruments.

New!!: Galaxy cluster and Norma (constellation) · See more »

Norma Cluster

The Norma Cluster (ACO 3627 or Abell 3627) is a rich cluster of galaxies located near the center of the Great Attractor; it is about distant.

New!!: Galaxy cluster and Norma Cluster · See more »

Nova

A nova (plural novae or novas) or classical nova (CN, plural CNe) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star, that slowly fades over several weeks or many months.

New!!: Galaxy cluster and Nova · See more »

NVSS 2146+82

NVSS 2146+82 (WN B2147+81) is a giant radio galaxy, one of the largest known.

New!!: Galaxy cluster and NVSS 2146+82 · See more »

Observable universe

The observable universe is a spherical region of the Universe comprising all matter that can be observed from Earth at the present time, because electromagnetic radiation from these objects has had time to reach Earth since the beginning of the cosmological expansion.

New!!: Galaxy cluster and Observable universe · See more »

Orbiting Solar Observatory

The Orbiting Solar Observatory (abbreviated OSO) Program was the name of a series of American space telescopes primarily intended to study the Sun, though they also included important non-solar experiments.

New!!: Galaxy cluster and Orbiting Solar Observatory · See more »

Orders of magnitude (length)

The following are examples of orders of magnitude for different lengths.

New!!: Galaxy cluster and Orders of magnitude (length) · See more »

Osipkov–Merritt model

Osipkov–Merritt models (named for Leonid Osipkov and David Merritt) are mathematical representations of spherical stellar systems (galaxies, star clusters, globular clusters etc.). The Osipkov-Merritt formula generates a one-parameter family of phase-space distribution functions that reproduce a specified density profile (representing stars) in a specified gravitational potential (in which the stars move).

New!!: Galaxy cluster and Osipkov–Merritt model · See more »

Outline of galaxies

The following outline is provided as an overview of and topical guide to galaxies: Galaxies – gravitationally bound systems of stars, stellar remnants, interstellar gas, dust, and dark matter.

New!!: Galaxy cluster and Outline of galaxies · See more »

Parsec

The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.

New!!: Galaxy cluster and Parsec · See more »

Peculiar velocity

Peculiar motion or peculiar velocity refers to the velocity of an object relative to a rest frame — usually a frame in which the average velocity of some objects is zero.

New!!: Galaxy cluster and Peculiar velocity · See more »

Perseus (constellation)

Perseus is a constellation in the northern sky, being named after the Greek mythological hero Perseus.

New!!: Galaxy cluster and Perseus (constellation) · See more »

Perseus Cluster

The Perseus cluster (Abell 426) is a cluster of galaxies in the constellation Perseus.

New!!: Galaxy cluster and Perseus Cluster · See more »

Perseus-Pisces Supercluster

The Perseus-Pisces Supercluster (SCl 40) is one of the largest known structures in the universe.

New!!: Galaxy cluster and Perseus-Pisces Supercluster · See more »

Peter Coles

Peter Coles (born 1963) is a theoretical cosmologist at Cardiff University and Maynooth University.

New!!: Galaxy cluster and Peter Coles · See more »

Phoenix (constellation)

Phoenix is a minor constellation in the southern sky.

New!!: Galaxy cluster and Phoenix (constellation) · See more »

Phoenix Cluster

The Phoenix Cluster (SPT-CL J2344-4243) is a massive, type I galaxy cluster located at its namesake constellation, the southern constellation of Phoenix.

New!!: Galaxy cluster and Phoenix Cluster · See more »

Physical cosmology

Physical cosmology is the study of the largest-scale structures and dynamics of the Universe and is concerned with fundamental questions about its origin, structure, evolution, and ultimate fate.

New!!: Galaxy cluster and Physical cosmology · See more »

Pictor

Pictor is a constellation in the Southern Celestial Hemisphere, located between the star Canopus and the Large Magellanic Cloud.

New!!: Galaxy cluster and Pictor · See more »

Pisces (constellation)

Pisces is a constellation of the zodiac.

New!!: Galaxy cluster and Pisces (constellation) · See more »

Pisces–Cetus Supercluster Complex

The Pisces–Cetus Supercluster Complex is a galaxy filament.

New!!: Galaxy cluster and Pisces–Cetus Supercluster Complex · See more »

Planck (spacecraft)

Planck was a space observatory operated by the European Space Agency (ESA) from 2009 to 2013, which mapped the anisotropies of the cosmic microwave background (CMB) at microwave and infra-red frequencies, with high sensitivity and small angular resolution.

New!!: Galaxy cluster and Planck (spacecraft) · See more »

Planetary system

A planetary system is a set of gravitationally bound non-stellar objects in or out of orbit around a star or star system.

New!!: Galaxy cluster and Planetary system · See more »

Press–Schechter formalism

The Press–Schechter formalism is a mathematical model for predicting the number of objects (such as galaxies or galaxy clusters) of a certain mass within a given volume of the Universe.

New!!: Galaxy cluster and Press–Schechter formalism · See more »

Quasar

A quasar (also known as a QSO or quasi-stellar object) is an extremely luminous active galactic nucleus (AGN).

New!!: Galaxy cluster and Quasar · See more »

Radio astronomy

Radio astronomy is a subfield of astronomy that studies celestial objects at radio frequencies.

New!!: Galaxy cluster and Radio astronomy · See more »

Radio halo

Radio halos are large-scale sources of diffuse radio emission found in the center of some, but not all, galaxy clusters.

New!!: Galaxy cluster and Radio halo · See more »

Radio relics

Radio Relics are diffuse synchrotron radio sources found in the peripheral regions of galaxy clusters.

New!!: Galaxy cluster and Radio relics · See more »

Ram pressure

In physics, ram pressure is a pressure exerted on a body moving through a fluid medium, caused by relative bulk motion of the fluid rather than random thermal motion.

New!!: Galaxy cluster and Ram pressure · See more »

Rashid Sunyaev

Rashid Alievich Sunyaev (Рәшит Гали улы Сөнәев, Раши́д Али́евич Сюня́ев; born 1 March 1943 in Tashkent, USSR) is a Soviet and Russian astrophysicist of Tatar descent.

New!!: Galaxy cluster and Rashid Sunyaev · See more »

Redshift quantization

Redshift quantization, also referred to as redshift periodicity, redshift discretization, preferred redshifts and redshift-magnitude bands, is the hypothesis that the redshifts of cosmologically distant objects (in particular galaxies and quasars) tend to cluster around multiples of some particular value.

New!!: Galaxy cluster and Redshift quantization · See more »

Redshift-space distortions

Redshift-space distortions are an effect in observational cosmology where the spatial distribution of galaxies appears squashed and distorted when their positions are plotted in redshift-space (i.e. as a function of their redshift) rather than in real-space (as a function of their actual distance).

New!!: Galaxy cluster and Redshift-space distortions · See more »

Retrograde and prograde motion

Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is the central object (right figure).

New!!: Galaxy cluster and Retrograde and prograde motion · See more »

ROSAT

ROSAT (short for Röntgensatellit, in German X-rays are called Röntgenstrahlen, in honour of Wilhelm Röntgen) was a German Aerospace Center-led satellite X-ray telescope, with instruments built by West Germany, the United Kingdom and the United States.

New!!: Galaxy cluster and ROSAT · See more »

RX J1347.5-1145

RX J1347.5–1145 is one of the most massive galaxy clusters known.

New!!: Galaxy cluster and RX J1347.5-1145 · See more »

Saraswati Supercluster

The Saraswati Supercluster is a massive galaxy supercluster about 1.2 gigaparsecs (4,000 million light years) away within the Stripe 82 region of SDSS, in the direction of the constellation Pisces.

New!!: Galaxy cluster and Saraswati Supercluster · See more »

Satellite galaxy

A satellite galaxy is a smaller companion galaxy that travels on bound orbits within the gravitational potential of a more massive and luminous host galaxy (also known as the primary galaxy).

New!!: Galaxy cluster and Satellite galaxy · See more »

SCP 06F6

SCP 06F6 is (or was) an astronomical object of unknown type, discovered on 21 February 2006 in the constellation Boötes, New Scientist News, 16 September 2008 during a survey of galaxy cluster CL 1432.5+3332.8 with the Hubble Space Telescope's Advanced Camera for Surveys Wide Field Channel.

New!!: Galaxy cluster and SCP 06F6 · See more »

Serpens

Serpens ("the Serpent", Greek Ὄφις) is a constellation of the northern hemisphere.

New!!: Galaxy cluster and Serpens · See more »

Sextans

Sextans is a minor equatorial constellation which was introduced in 1687 by Johannes Hevelius.

New!!: Galaxy cluster and Sextans · See more »

Shock waves in astrophysics

Shock waves are common in astrophysical environments.

New!!: Galaxy cluster and Shock waves in astrophysics · See more »

SN Refsdal

SN Refsdal is the first detected multiply-lensed supernova, visible within the field of the galaxy cluster MACS J1149+2223.

New!!: Galaxy cluster and SN Refsdal · See more »

SpaceEngine

SpaceEngine (stylized as "Space Engine") is a proprietary 3D astronomy program and game engine developed by Russian astronomer and programmer Vladimir Romanyuk.

New!!: Galaxy cluster and SpaceEngine · See more »

SpARCS1049+56

SpARCS1049+56 is a galaxy cluster whose heart is bursting with new stars and located at a distance of about 9.8 billion light-years away from Earth.

New!!: Galaxy cluster and SpARCS1049+56 · See more »

SPT-CL J0546-5345

SPT-CL J0546-5345 is one of the most massive galaxy clusters ever found in the early universe.

New!!: Galaxy cluster and SPT-CL J0546-5345 · See more »

SPT-CL J2106-5844

SPT-CLJ2106-5844 is the galaxy cluster located 7.5 billion light years from Earth.

New!!: Galaxy cluster and SPT-CL J2106-5844 · See more »

SSA22 Protocluster

The SSA22 Protocluster, also known as EQ J221734.0+001701, is a galaxy protocluster located at z.

New!!: Galaxy cluster and SSA22 Protocluster · See more »

Stellar dynamics

Stellar dynamics is the branch of astrophysics which describes in a statistical way the collective motions of stars subject to their mutual gravity.

New!!: Galaxy cluster and Stellar dynamics · See more »

Strong gravitational lensing

Strong gravitational lensing is a gravitational lensing effect that is strong enough to produce multiple images, arcs, or even Einstein rings.

New!!: Galaxy cluster and Strong gravitational lensing · See more »

Structure formation

In physical cosmology, structure formation is the formation of galaxies, galaxy clusters and larger structures from small early density fluctuations.

New!!: Galaxy cluster and Structure formation · See more »

Sunyaev–Zel'dovich Array

The Sunyaev–Zel'dovich Array (SZA) in California is an array of eight 3.5 meter telescopes that is now operating as part of the Combined Array for Research in Millimeter-wave Astronomy (CARMA).

New!!: Galaxy cluster and Sunyaev–Zel'dovich Array · See more »

Sunyaev–Zel'dovich effect

The Sunyaev–Zel'dovich effect (named after Rashid Sunyaev and Yakov B. Zel'dovich and often abbreviated as the SZ effect) is the distortion of the cosmic microwave background radiation (CMB) through inverse Compton scattering by high energy electrons in galaxy clusters, in which the low energy CMB photons receive an average energy boost during collision with the high energy cluster electrons.

New!!: Galaxy cluster and Sunyaev–Zel'dovich effect · See more »

Supercluster

A supercluster is a large group of smaller galaxy clusters or galaxy groups; it is among the largest-known structures of the cosmos.

New!!: Galaxy cluster and Supercluster · See more »

Supergalactic coordinate system

Supergalactic coordinates are coordinates in a spherical coordinate system which was designed to have its equator aligned with the supergalactic plane, a major structure in the local universe formed by the preferential distribution of nearby galaxy clusters (such as the Virgo cluster, the Great Attractor and the Pisces-Perseus supercluster) towards a (two-dimensional) plane.

New!!: Galaxy cluster and Supergalactic coordinate system · See more »

Supergalaxy

Supergalaxy, super-galaxy, or super galaxy can refer to.

New!!: Galaxy cluster and Supergalaxy · See more »

Three-body problem

In physics and classical mechanics, the three-body problem is the problem of taking an initial set of data that specifies the positions, masses, and velocities of three bodies for some particular point in time and then determining the motions of the three bodies, in accordance with Newton's laws of motion and of universal gravitation, which are the laws of classical mechanics.

New!!: Galaxy cluster and Three-body problem · See more »

Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure

Timeline of galaxies, clusters of galaxies, and large-scale structure of the universe.

New!!: Galaxy cluster and Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure · See more »

Timeline of the far future

While predictions of the future can never be absolutely certain, present understanding in various scientific fields allows for the prediction of far-future events, if only in the broadest outline.

New!!: Galaxy cluster and Timeline of the far future · See more »

Timeline of the formation of the Universe

This is a timeline of the formation and subsequent evolution of the Universe from the Big Bang (13.799 ± 0.021 billion years ago) to the present day.

New!!: Galaxy cluster and Timeline of the formation of the Universe · See more »

Twin Quasar

The Twin Quasar (also known as Twin QSO, Double Quasar, SBS 0957+561, TXS 0957+561, Q0957+561 or QSO 0957+561 A/B), was discovered in 1979 and was the first identified gravitationally lensed object.

New!!: Galaxy cluster and Twin Quasar · See more »

Type-cD galaxy

The type-cD galaxy (also cD-type galaxy, cD galaxy) is a galaxy morphology classification, a subtype of type-D giant elliptical galaxy.

New!!: Galaxy cluster and Type-cD galaxy · See more »

Ultimate fate of the universe

The ultimate fate of the universe is a topic in physical cosmology, whose theoretical restrictions allow possible scenarios for the evolution and ultimate fate of the universe to be described and evaluated.

New!!: Galaxy cluster and Ultimate fate of the universe · See more »

University of Birmingham

The University of Birmingham (informally Birmingham University) is a public research university located in Edgbaston, Birmingham, United Kingdom.

New!!: Galaxy cluster and University of Birmingham · See more »

Ursa Major

Ursa Major (also known as the Great Bear) is a constellation in the northern sky, whose associated mythology likely dates back into prehistory.

New!!: Galaxy cluster and Ursa Major · See more »

Ursa Major Cluster

The Ursa Major Cluster (Ursa Major I Cluster, UMa I ClG) is a spiral-rich galaxy cluster of the Virgo Supercluster.

New!!: Galaxy cluster and Ursa Major Cluster · See more »

Vela Supercluster

The Vela Supercluster (Vela SCl, VSCL) is a massive galactic supercluster about 265.5 megaparsecs (870 million light-years) away within the vicinity of the Zone of Avoidance of the Universe, centered on the constellation Vela.

New!!: Galaxy cluster and Vela Supercluster · See more »

Velocity dispersion

In astronomy, the velocity dispersion (σ) is the statistical dispersion of velocities about the mean velocity for a group of objects, such as an open cluster, globular cluster, galaxy, galaxy cluster, or supercluster.

New!!: Galaxy cluster and Velocity dispersion · See more »

Virgo (constellation)

Virgo is one of the constellations of the zodiac.

New!!: Galaxy cluster and Virgo (constellation) · See more »

Virgo Cluster

The Virgo Cluster is a cluster of galaxies whose center is 53.8 ± 0.3 Mly (16.5 ± 0.1 Mpc) away in the constellation Virgo.

New!!: Galaxy cluster and Virgo Cluster · See more »

Virgo Supercluster

The Virgo Supercluster (Virgo SC) or the Local Supercluster (LSC or LS) is a mass concentration of galaxies containing the Virgo Cluster and Local Group, which in turn contains the Milky Way and Andromeda galaxies.

New!!: Galaxy cluster and Virgo Supercluster · See more »

Virial theorem

In mechanics, the virial theorem provides a general equation that relates the average over time of the total kinetic energy, \left\langle T \right\rangle, of a stable system consisting of N particles, bound by potential forces, with that of the total potential energy, \left\langle V_\text \right\rangle, where angle brackets represent the average over time of the enclosed quantity.

New!!: Galaxy cluster and Virial theorem · See more »

Void (astronomy)

Cosmic voids are vast spaces between filaments (the largest-scale structures in the universe), which contain very few or no galaxies.

New!!: Galaxy cluster and Void (astronomy) · See more »

Void galaxy

Void galaxies are galaxies which exist in cosmological voids.

New!!: Galaxy cluster and Void galaxy · See more »

Warm dark matter

Warm dark matter (WDM) is a hypothesized form of dark matter that has properties intermediate between those of hot dark matter and cold dark matter, causing structure formation to occur bottom-up from above their free-streaming scale, and top-down below their free streaming scale.

New!!: Galaxy cluster and Warm dark matter · See more »

Weak gravitational lensing

While the presence of any mass bends the path of light passing near it, this effect rarely produces the giant arcs and multiple images associated with strong gravitational lensing.

New!!: Galaxy cluster and Weak gravitational lensing · See more »

Wilkinson Microwave Anisotropy Probe

The Wilkinson Microwave Anisotropy Probe (WMAP), originally known as the Microwave Anisotropy Probe (MAP), was a spacecraft operating from 2001 to 2010 which measured temperature differences across the sky in the cosmic microwave background (CMB) – the radiant heat remaining from the Big Bang.

New!!: Galaxy cluster and Wilkinson Microwave Anisotropy Probe · See more »

William Wilson Morgan

William Wilson Morgan (January 3, 1906 – June 21, 1994) was an American astronomer and astrophysicist.

New!!: Galaxy cluster and William Wilson Morgan · See more »

X-ray astronomy

X-ray astronomy is an observational branch of astronomy which deals with the study of X-ray observation and detection from astronomical objects.

New!!: Galaxy cluster and X-ray astronomy · See more »

X-ray transient

X-ray emission occurs from many celestial objects.

New!!: Galaxy cluster and X-ray transient · See more »

XMM Cluster Survey

The XMM Cluster Survey (XCS) is a serendipitous X-ray galaxy cluster survey being conducted using archival data taken by ESA’s XMM-Newton satellite.

New!!: Galaxy cluster and XMM Cluster Survey · See more »

XMM-Newton

XMM-Newton, also known as the High Throughput X-ray Spectroscopy Mission and the X-ray Multi-Mirror Mission, is an X-ray space observatory launched by the European Space Agency in December 1999 on an Ariane 5 rocket.

New!!: Galaxy cluster and XMM-Newton · See more »

XMMXCS 2215-1738

XMMXCS 2215-1738 is a galaxy cluster that lies 10 billion light-years away and has a redshift value of z.

New!!: Galaxy cluster and XMMXCS 2215-1738 · See more »

Yoel Rephaeli

Yoel Rephaeli is an Israeli-American cosmologist.

New!!: Galaxy cluster and Yoel Rephaeli · See more »

Zero-velocity surface

The zero-velocity surface is a concept that relates to the N-body problem of gravity.

New!!: Galaxy cluster and Zero-velocity surface · See more »

Zwicky (crater)

Zwicky is a lunar impact crater that is located on the far side of the Moon.

New!!: Galaxy cluster and Zwicky (crater) · See more »

1803 Zwicky

1803 Zwicky, provisional designation, is a stony Phocaea asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter.

New!!: Galaxy cluster and 1803 Zwicky · See more »

2014 in science

A number of significant scientific events occurred in 2014, including the first robotic landing on a comet and the first complete stem-cell-assisted recovery from paraplegia.

New!!: Galaxy cluster and 2014 in science · See more »

2015 in science

A number of significant scientific events occurred in 2015.

New!!: Galaxy cluster and 2015 in science · See more »

2016 in science

A number of significant scientific events occurred in 2016.

New!!: Galaxy cluster and 2016 in science · See more »

2XMM J083026+524133

2XMM J083026+524133 (2XMM J0830) is a very large galaxy cluster that lies 7.7 billion light-years away.

New!!: Galaxy cluster and 2XMM J083026+524133 · See more »

3C 295

3C 295 is a narrow-line radio galaxy located in the constellation of Boötes.

New!!: Galaxy cluster and 3C 295 · See more »

3C 75

3C75 (a.k.a. 3C 75) is a binary black hole system in the Abell 400 cluster of galaxies.

New!!: Galaxy cluster and 3C 75 · See more »

Redirects here:

ClG, Cluster (galaxies), Cluster (galaxy), Cluster galaxies, Cluster galaxy, Cluster of galaxies, Clusters (galaxies), Clusters (galaxy), Galactic Clusters, Galaxy Cluster, Galaxy clusters, Galaxy protocluster, Galaxy subcluster, Galaxy subclusters, Protocluster of galaxies, Subclump, Subcluster, Subclusters.

References

[1] https://en.wikipedia.org/wiki/Galaxy_cluster

OutgoingIncoming
Hey! We are on Facebook now! »