9 relations: Ara (constellation), Astrophysical X-ray source, Binary star, Epoch (astronomy), GRO J1655-40, Solar mass, Space.com, Stellar black hole, X-ray transient.
Ara (constellation)
Ara (Latin: "The Altar") is a southern constellation situated between Scorpius and Triangulum Australe.
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Astrophysical X-ray source
Astrophysical X-ray sources are astronomical objects with physical properties which result in the emission of X-rays.
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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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Epoch (astronomy)
In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time.
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GRO J1655-40
GRO J1655-40 is a binary star consisting of an evolved F-type primary star and a massive, unseen companion, which orbit each other once every 2.6 days in the constellation of Scorpius.
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Solar mass
The solar mass is a standard unit of mass in astronomy, equal to approximately.
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Space.com
Space.com is a space and astronomy news website.
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Stellar black hole
A stellar black hole (or stellar-mass black hole) is a black hole formed by the gravitational collapse of a massive star.
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X-ray transient
X-ray emission occurs from many celestial objects.
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