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Red quasars are quasars with optical colors that are redder than normal quasars, thought to be the result of moderate levels of dust extinction within the quasar host galaxy. Infrared surveys have demonstrated that red quasars make up a substantial fraction of the total quasar population.
In more recent quasars, dust is not related to the quasar or galaxy. [7] QSO J0005-0006 was found to be dust free in a 2006 study of distant quasars, and confirmed as such in the 2010 study. The 2010 study removed the potential of masking the dust emission signature occurring, by studying the amount of obscuration of the quasar.
Quasars, Redshifts and Controversies is a 1987 book by Halton Arp, an astronomer famous for his Atlas of Peculiar Galaxies (1966). [1] Arp argued that many quasars with otherwise high redshift are somehow linked to close objects such as nearby galaxies .
Any quasar with z > 1 is receding faster than c, while z exactly equal to 1 indicates recession at the speed of light. [33] Early attempts to explain superluminal quasars resulted in convoluted explanations with a limit of z = 2.326, or in the extreme z < 2.4. [34] The majority of quasars lie between z = 2 and z = 5.
Quasar, Quasar, Burning Bright is a collection of seventeen scientific essays by American writer and scientist Isaac Asimov. It was the thirteenth of a series of books collecting essays from The Magazine of Fantasy and Science Fiction. These essays were first published between May 1976 and September 1977.
This suggests the quasar is currently undergoing an intense wave of star formations thus increasing its luminosity. [3] A radio jet has also been found on the side of quasar according to a study published in 2023. [5] CCD image of the Cloverleaf quasar taken in March 1988 by the ESO/MPI 2.2m telescope. The four separated images are part of the ...
In some photographs a quasar is in the foreground of known galaxies, and in others there appeared to be matter bridging the two objects, implying they are very close in space. If they are, and the redshifts were due to Hubble expansion, then both objects should have similar redshifts. The galaxies had much smaller redshifts than the quasars.
Download QR code; Print/export Download as PDF; Printable version; ... Pages in category "Quasars" The following 129 pages are in this category, out of 129 total.
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