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15 apr 2008 · For example, they predict that most quasars will be found at just the range of distances where they are indeed seen, corresponding to a particular epoch of the cosmos. Not least, their models provide powerful evidence against some alternative theories, for example the notion that quasar black holes are fed by matter channeled into the center by internal processes rather than by collisions with ...
Chuẩn tinh. Quasar 3C 273 do kính thiên văn Hubble chụp. Quasar, (viết tắt của tên tiếng Anh: quasi-stellar object, có nghĩa là vật thể giống sao, trong tiếng Việt, quasar còn được gọi là chuẩn tinh) là một thiên thể cực xa và cực sáng, với dịch chuyển đỏ rất lớn. Trong phần ánh ...
As a quasar, TON 618 is believed to be the active galactic nucleus at the center of a galaxy, the engine of which is a supermassive black hole feeding on intensely hot gas and matter in an accretion disc. Given its observed redshift of 2.219, the light travel time of TON 618 is estimated to be approximately 10.8 billion years.
Un cúmul de quàsars o ( LQG, acrònim de l'anglès large quasar group) és un conjunt de quàsars (una forma de nuclis galàctics actius alimentats per forats negres supermassius) que formen el que hom pensa que constituirien les estructures astronòmiques més grans de l'univers conegut. Els cúmuls de quàsars hom pensa que són els ...
In gamma-ray astronomy, gamma-ray bursts ( GRBs) are immensely energetic explosions that have been observed in distant galaxies, being the brightest and most extreme explosive events in the entire universe, [1] [2] [3] as NASA describes the bursts as the "most powerful class of explosions in the universe". [4]
Halton Christian "Chip" Arp (March 21, 1927 – December 28, 2013) was an American astronomer. He is remembered for his 1966 book Atlas of Peculiar Galaxies, which catalogued unusual looking galaxies and presented their images. Arp was also known as a critic of the Big Bang theory and for advocating a non-standard cosmology incorporating ...
List of quasars; References This page was last edited on 24 March 2023, at 22:28 (UTC). Text is available under the Creative Commons ...
