Phrases with «accretion disk»

An accretion disk is a rotating disk made up of gas, dust, and other material that forms around an object in space, such as a star or a black hole. The disk is pulled inwards by gravity, causing the material to accumulate or "accrete" onto the central object. This process is important in the formation of planets, stars, and other celestial objects. Full definition

Sentences with «accretion disk»

  • Kinney is an expert in extragalactic astronomy and has published 80 papers in refereed journals on quasars, blazars, active galaxies and normal galaxies, and signatures of accretion disks in active galaxies. (keckobservatory.org)
  • These radio sources had radio emission so concentrated that they had to come from material in accretion disks orbiting supermassive black holes (more on galactic black holes). (solstation.com)
  • The black hole, which became visible due to the presence of superheated gas jets and a rapidly spinning accretion disk, was spotted using the Lijiang Telescope in Yunnan, China. (ibtimes.com)
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