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TON 618 (abbreviation of Tonantzintla 618) is a hyperluminous, ... In 1970, a radio survey at Bologna in Italy discovered radio emissions from TON 618, ...
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.
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.
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]
TON 618: TON 618 is a very distant and extremely luminous quasar—technically, a hyperluminous, broad-absorption line, radio-loud quasar—located near the North Galactic Pole in the constellation Canes Venatici.
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.
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It was discovered by James Dunlop in 1826. Paris Pismis cataloged it as Tonantzintla 1 or Ton 1 in (Pismis, 1959) [17] ... Tonantzintla 618. Registered by Braulio ...