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The emission lines in the spectrum of TON 618 have been found to be unusually wide, [7] indicating that the gas is travelling very fast; the full width half maxima of TON 618 has been the largest of the 29 quasars, with hints of 10,500 km/s speeds of infalling material by a direct measure of the H β spectral line, indication of a very strong ...
The supermassive black hole at the core of Messier 87, here shown by an image by the Event Horizon Telescope, is among the black holes in this list.. This is an ordered list of the most massive black holes so far discovered (and probable candidates), measured in units of solar masses (M ☉), approximately 2 × 10 30 kilograms.
Ton 618 (this quasar has possibly the biggest black hole ever found, estimated at 66 billion solar masses) [1] 3C 371; 4C +37.11 (this radio galaxy is believed to have binary supermassive black holes) [2] AP Lib; S5 0014+81 (said to be a compact hyperluminous quasar, estimated at 40 billion solar masses) [3]
Masses of black holes in quasars can be estimated via indirect methods that are subject to substantial uncertainty. The quasar TON 618 is an example of an object with an extremely large black hole, estimated at 4.07 × 10 10 (40.7 billion) M ☉. [108] Its redshift is 2.219.
This is a list of the largest cosmic structures so far discovered. The unit of measurement used is the light-year (distance traveled by light in one Julian year; approximately 9.46 trillion kilometres).
It is one of the most massive galaxy clusters known, with the mass on the order of 2 × 10 15 M ☉, [4] and is the most luminous X-ray cluster discovered, producing more X-rays than any other known massive cluster. [4] It is located at a comoving distance of 8.61 billion light-years (2.64 gigaparsecs) from Earth.
The object itself was detected in ESO images dating back to 1980, but its identification as a quasar occurred only several decades later. [2]An automated analysis of 2022 data from the European Space Agency's Gaia satellite did not confirm J0529-4351 as too bright to be a quasar, and suggested it was a 16th magnitude star with a 99.98% probability.
first radio source for which optical identification was found, that was a star-like looking object First "star" discovered later found to be a quasar First radio source discovered later found to be a quasar First quasar identified 3C 273: 1962 first radio-"star" found to be at a high redshift with a non-stellar spectrum. First radio-quiet quasar