72 relations: Accretion disk, Albert Einstein, Andrzej Udalski, Angular diameter, Arthur Eddington, Astrometry, Astronomical seeing, Astronomy, Binary star, Black hole, Bohdan Paczyński, Brown dwarf, Bulge (astronomy), Caustic (optics), Chang–Refsdal lens, Dark matter, Dark matter halo, Degeneracy (mathematics), Einstein radius, Einstein ring, Exoplanet, Galactic Center, General relativity, Gliese 581c, Gliese 581e, Gravitational lens, Hubble Space Telescope, Huchra's lens, Isaac Newton, Johann Georg von Soldner, Jupiter, Kyongae Chang, Large Magellanic Cloud, Light curve, Limb darkening, Massive compact halo object, MicroFUN, Microlensing Observations in Astrophysics, Minute and second of arc, MOA-2007-BLG-192Lb, Monthly Notices of the Royal Astronomical Society, Nature (journal), Neutron star, Nova, OGLE-2003-BLG-235/MOA-2003-BLG-53, OGLE-2005-BLG-071Lb, OGLE-2005-BLG-169Lb, OGLE-2005-BLG-390Lb, OGLE-2006-BLG-109L, OGLE-2016-BLG-1190Lb, ..., Optical depth, Optical Gravitational Lensing Experiment, Orest Khvolson, Parallax, Photometry (astronomy), Planet, Probing Lensing Anomalies Network, Proper motion, Quasar, Red dwarf, Robert J. Nemiroff, Sjur Refsdal, Space Interferometry Mission, Spitzer Space Telescope, Star, Subtended angle, Sunspot, Supernova, Transit (astronomy), Variable star, White dwarf, Xallarap. Expand index (22 more) »
Accretion disk
An accretion disk is a structure (often a circumstellar disk) formed by diffused material in orbital motion around a massive central body.
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Albert Einstein
Albert Einstein (14 March 1879 – 18 April 1955) was a German-born theoretical physicist who developed the theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics).
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Andrzej Udalski
Andrzej Udalski (born 22 January 1957 in Łódź, Poland) is a Polish astronomer and astrophysicist, and director of the Astronomical Observatory of the University of Warsaw.
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Angular diameter
The angular diameter, angular size, apparent diameter, or apparent size is an angular measurement describing how large a sphere or circle appears from a given point of view.
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Arthur Eddington
Sir Arthur Stanley Eddington (28 December 1882 – 22 November 1944) was an English astronomer, physicist, and mathematician of the early 20th century who did his greatest work in astrophysics.
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Astrometry
Astrometry is the branch of astronomy that involves precise measurements of the positions and movements of stars and other celestial bodies.
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Astronomical seeing
Astronomical seeing is the blurring and twinkling of astronomical objects like stars due to turbulent mixing in the Earth's atmosphere, causing variations of the optical refractive index.
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Astronomy
Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.
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Binary star
A binary star is a star system consisting of two stars orbiting around their common barycenter.
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Black hole
A black hole is a region of spacetime exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it.
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Bohdan Paczyński
Bohdan Paczyński or Bohdan Paczynski (8 February 1940 – 19 April 2007) was a Polish astronomer notable in the theory of the stellar evolution, accretion discs, and gamma ray bursts.
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Brown dwarf
Brown dwarfs are substellar objects that occupy the mass range between the heaviest gas giant planets and the lightest stars, having masses between approximately 13 to 75–80 times that of Jupiter, or approximately to about.
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Bulge (astronomy)
In astronomy, a bulge is a tightly packed group of stars within a larger formation.
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Caustic (optics)
In optics, a caustic or caustic network is the envelope of light rays reflected or refracted by a curved surface or object, or the projection of that envelope of rays on another surface.
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Chang–Refsdal lens
A Chang–Refsdal lens is a point-mass gravitational lens (e.g. Black hole) perturbed by constant external shear.
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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.
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Dark matter halo
A dark matter halo is a hypothetical component of a galaxy that envelops the galactic disc and extends well beyond the edge of the visible galaxy.
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Degeneracy (mathematics)
In mathematics, a degenerate case is a limiting case in which an element of a class of objects is qualitatively different from the rest of the class and hence belongs to another, usually simpler, class.
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Einstein radius
The Einstein radius is the radius of an Einstein ring, and is a characteristic angle for gravitational lensing in general, as typical distances between images in gravitational lensing are of the order of the Einstein radius.
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Einstein ring
In observational astronomy an Einstein ring, also known as an Einstein–Chwolson ring or Chwolson ring, is the deformation of the light from a source (such as a galaxy or star) into a ring through gravitational lensing of the source's light by an object with an extremely large mass (such as another galaxy or a black hole).
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Exoplanet
An exoplanet or extrasolar planet is a planet outside our solar system.
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Galactic Center
The Galactic Center is the rotational center of the Milky Way.
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General relativity
General relativity (GR, also known as the general theory of relativity or GTR) is the geometric theory of gravitation published by Albert Einstein in 1915 and the current description of gravitation in modern physics.
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Gliese 581c
Gliese 581c or Gl 581c is a planet orbiting within the Gliese 581 system.
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Gliese 581e
Gliese 581e or Gl 581e is an extrasolar planet orbiting within the Gliese 581 system, located approximately 20.4 light-years away from Earth in the Libra constellation.
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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.
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Hubble Space Telescope
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.
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Huchra's lens
Huchra's lens is the lensing galaxy of the Einstein Cross (Quasar 2237+30); it is also called ZW 2237+030 or QSO 2237+0305 G. It exhibits the phenomenon of gravitational lensing that was postulated by Albert Einstein when he realized that gravity would be able to bend light and thus could have lens-like effects.
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Isaac Newton
Sir Isaac Newton (25 December 1642 – 20 March 1726/27) was an English mathematician, astronomer, theologian, author and physicist (described in his own day as a "natural philosopher") who is widely recognised as one of the most influential scientists of all time, and a key figure in the scientific revolution.
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Johann Georg von Soldner
Johann Georg von Soldner (16 July 1776 in Feuchtwangen, Ansbach – 13 May 1833 in Bogenhausen, Munich) was a German physicist, mathematician and astronomer, first in Berlin and later in 1808 in Munich.
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Jupiter
Jupiter is the fifth planet from the Sun and the largest in the Solar System.
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Kyongae Chang
Kyongae Chang (born September 5, 1946) is a South Korean astrophysicist.
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Large Magellanic Cloud
The Large Magellanic Cloud (LMC) is a satellite galaxy of the Milky Way.
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Light curve
In astronomy, a light curve is a graph of light intensity of a celestial object or region, as a function of time.
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Limb darkening
Limb darkening is an optical effect seen in stars (including the Sun), where the center part of the disk appears brighter than the edge or limb of the image.
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Massive compact halo object
A massive astrophysical compact halo object (MACHO) is any kind of astronomical body that might explain the apparent presence of dark matter in galaxy halos.
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MicroFUN
The Microlensing Follow-Up Network (μFUN, pronounced "micro-fun") is an informal group of observers who monitor high magnification gravitational microlensing events in the Milky Way's Galactic Bulge.
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Microlensing Observations in Astrophysics
Microlensing Observations in Astrophysics (MOA) is a collaborative project between researchers in New Zealand and Japan, led by Professor Yasushi Muraki of Nagoya University.
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Minute and second of arc
A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.
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MOA-2007-BLG-192Lb
MOA-2007-BLG-192Lb, occasionally shortened to MOA-192 b, is an extrasolar planet approximately 3,000 light-years away in the constellation of Sagittarius.
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Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
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Nature (journal)
Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.
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Neutron star
A neutron star is the collapsed core of a large star which before collapse had a total of between 10 and 29 solar masses.
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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.
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OGLE-2003-BLG-235/MOA-2003-BLG-53
OGLE-2003-BLG-235/MOA 2003-BLG-53 was a gravitational microlensing event which occurred in the constellation of Sagittarius during July 2003.
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OGLE-2005-BLG-071Lb
OGLE-2005-BLG-071Lb is a planet discovered by the Optical Gravitational Lensing Experiment (OGLE) and others in 2005, using gravitational microlensing.
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OGLE-2005-BLG-169Lb
OGLE-2005-BLG-169Lb is an extrasolar planet located approximately 2700 parsecs away in the constellation of Sagittarius, orbiting the star OGLE-2005-BLG-169L.
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OGLE-2005-BLG-390Lb
OGLE-2005-BLG-390Lb (known sometimes as Hoth by NASA) is a super-Earth exoplanet orbiting OGLE-2005-BLG-390L, a star 21,500 ± 3,300 light years from Earth near the center of the Milky Way.
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OGLE-2006-BLG-109L
OGLE-2006-BLG-109L (where 'L' stands for lens) is a dim magnitude 17 M0V galactic bulge star approximately 4,920 light-years away in the constellation of Scorpius.
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OGLE-2016-BLG-1190Lb
OGLE-2016-BLG-1190Lb is an extremely massive extrasolar planet, with a mass about 13.4 times that of Jupiter, or is, possibly, a low mass brown dwarf, orbiting the G-dwarf star OGLE-2016-BLG-1190L, located about 22,000 light years from Earth, in the constellation of Sagittarius, in the galactic bulge of the Milky Way.
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Optical depth
In physics, optical depth or optical thickness, is the natural logarithm of the ratio of incident to transmitted radiant power through a material, and spectral optical depth or spectral optical thickness is the natural logarithm of the ratio of incident to transmitted spectral radiant power through a material.
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Optical Gravitational Lensing Experiment
The Optical Gravitational Lensing Experiment (OGLE) is a Polish astronomical project based at the University of Warsaw that runs a long-term variability sky survey (1992-present).
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Orest Khvolson
Orest Danilovich Khvolson or Chwolson (Орест Данилович Хвольсон) (November 22 (N.S. December 4), 1852 in Saint Petersburg – May 11, 1934 in Leningrad) was a Russian physicist and honorary member of the Soviet Academy of Sciences (1920).
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Parallax
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.
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Photometry (astronomy)
Photometry is a technique of astronomy concerned with measuring the flux, or intensity of an astronomical object's electromagnetic radiation.
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Planet
A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.
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Probing Lensing Anomalies Network
The Probing Lensing Anomalies NETwork (PLANET) collaboration coordinates a network of telescopes to rapidly sample photometric measurements of the magnification of stars in the galactic bulge undergoing gravitational microlensing by intervening foreground stars (or other compact massive objects).
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Proper motion
Proper motion is the astronomical measure of the observed changes in the apparent places of stars or other celestial objects in the sky, as seen from the center of mass of the Solar System, compared to the abstract background of the more distant stars.
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Quasar
A quasar (also known as a QSO or quasi-stellar object) is an extremely luminous active galactic nucleus (AGN).
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Red dwarf
A red dwarf (or M dwarf) is a small and relatively cool star on the main sequence, of M spectral type.
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Robert J. Nemiroff
Dr.
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Sjur Refsdal
Sjur Refsdal (30 December 1935 – 29 January 2009) was a Norwegian astrophysicist, born in Oslo.
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Space Interferometry Mission
The Space Interferometry Mission, or SIM, also known as SIM Lite (formerly known as SIM PlanetQuest), was a planned space telescope proposed by the U.S. National Aeronautics and Space Administration (NASA), in conjunction with contractor Northrop Grumman.
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Spitzer Space Telescope
The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space telescope launched in 2003 and still operating as of 2018.
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Star
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
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Subtended angle
In geometry, an angle subtended by an arc, line segment, or other curve is one whose two rays pass through the endpoints of the arc.
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Sunspot
Sunspots are temporary phenomena on the Sun's photosphere that appear as spots darker than the surrounding areas.
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Supernova
A supernova (plural: supernovae or supernovas, abbreviations: SN and SNe) is a transient astronomical event that occurs during the last stellar evolutionary stages of a star's life, either a massive star or a white dwarf, whose destruction is marked by one final, titanic explosion.
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Transit (astronomy)
In astronomy, a transit or astronomical transit is the phenomenon of at least one celestial body appearing to move across the face of another celestial body, hiding a small part of it, as seen by an observer at some particular vantage point.
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Variable star
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.
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White dwarf
A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter.
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Xallarap
Xallarap is a variation in a gravitational lensing observation caused by the orbital motion of the source.
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Redirects here:
Gravitational micro-lensing, Microlensing, Microlensing event.
References
[1] https://en.wikipedia.org/wiki/Gravitational_microlensing