| 词汇 | quasar |
| 释义 | quasar noun[ C ] physics specializeduk /ˈkweɪ.zɑːr/ us /ˈkweɪ.zɑːr/ the centre of a galaxy (= group of stars) that is very far away, producing large amounts of energy类星体 Astronomy albedo Andromeda Aquarius Aries asteroid galactic galaxy Gemini geostationary geosynchronous nova observatory orbit orbital Orion substellar sunspot supergiant supermassive supermoon Examples of quasarquasar Astronomical objects of all scales ranging from supermassive stars via galaxy nuclei and quasars to the universe as a whole are described on its basis. This reference frame is based on observations of satellites and celestial radio sources known as quasars made from various co-ordinated stations around the globe. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 A binary quasar, may be closely linked gravitationally and form a pair of interacting galaxies. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. From counting dead quasars, he deduced that most massive galaxies have black holes at their centres. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It comprises seventy-three quasars, with a minimum diameter of 1.4 billion light-years, but over four billion light-years at its widest point. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The result is a rare example of a sixfold multiply imaged quasar. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Quasars are the furthest active galaxies, some of them being observed at distances 12 billion light years away. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It has been called the naked quasar and the quasar without a home because it appears to lack a host galaxy. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Such information as there is about the host galaxies of radio-loud quasars and blazars suggests that they are also hosted by elliptical galaxies. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This early burst of star formation is thought to have made a protogalaxy's luminosity comparable to a present day starburst galaxy or a quasar. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This pair provide evidence for the theory that quasars are switched on by galactic collisions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Gravitational lensing was first observed in 1979, in the form of a quasar lensed by a foreground galaxy. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This would mean that a quasar varying on a time scale of a few weeks can not be larger than a few light-weeks across. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Quasars show the locations where massive black holes are growing rapidly (via accretion). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There were also serious concerns regarding the idea of cosmologically distant quasars. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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