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QUASAR
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
A starlike object that may send out radio waves and other forms of energy; many have large red shifts
Synonyms:
quasar; quasi-stellar radio source
Classified under:
Nouns denoting natural objects (not man-made)
Hypernyms ("quasar" is a kind of...):
celestial body; heavenly body (natural objects visible in the sky)
Context examples:
This is one of the largest samples of quasars from this early on in the history of the Universe to be surveyed.
(ESO Observations Reveal Black Holes' Breakfast at the Cosmic Dawn, ESO)
The team, including Carnegie's Eduardo Banados and led by Roberto Decarli of the Max Planck Institute for Astronomy, made this discovery by accident when investigating quasars, which are supermassive black holes that sit at the center of enormous galaxies, accreting matter.
(Stunning Star Birth in Earliest Galaxies, The Titi Tudorancea Bulletin)
That means it took more than 13 billion years for the light from the quasar to reach us.
(Most Distant Black Hole, NASA)
Astronomers are studying quasars to see if and how accretion disks are fueled with external mass.
(Astronomers Study How Quasars Are Powered by Accretion Disks, The Titi Tudorancea Bulletin)
Using this method, the team uncovered dark matter clumps along the telescope's line of sight to the quasars, as well as in and around the intervening lensing galaxies.
(Cosmic Magnifying Glasses Find Dark Matter in Small Clumps, NASA)
The astronomers found that 12 quasars were surrounded by enormous gas reservoirs: halos of cool, dense hydrogen gas extending 100 000 light years from the central black holes and with billions of times the mass of the Sun.
(ESO Observations Reveal Black Holes' Breakfast at the Cosmic Dawn, ESO)
This quasar is especially interesting because it comes from a time when the universe was just beginning to emerge from its dark ages.
(Most Distant Black Hole, NASA)
In the center of this light, at the heart of a quasar, researchers think, is an all-consuming black hole.
(Astronomers Study How Quasars Are Powered by Accretion Disks, The Titi Tudorancea Bulletin)
The astronomers measured how the light emitted by oxygen and neon gas orbiting each of the quasars' black holes is warped by the gravity of a massive foreground galaxy, which acts as a magnifying lens.
(Cosmic Magnifying Glasses Find Dark Matter in Small Clumps, NASA)
To solve this mystery, Farina and his colleagues used the MUSE instrument on ESO’s Very Large Telescope (VLT) in the Chilean Atacama Desert to study quasars — extremely bright objects powered by supermassive black holes which lie at the centre of massive galaxies.
(ESO Observations Reveal Black Holes' Breakfast at the Cosmic Dawn, ESO)
