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A black hole with the mass of a car would have a diameter of about 10 −24 m and take a nanosecond to evaporate, during which time it would briefly have a luminosity of more than 200 times that of the Sun. Lower-mass black holes are expected to evaporate even faster; for example, a black hole of mass 1 TeV/c 2 would take less than 10 −88 ...
As of February 2022, only one isolated black hole has been confirmed, OGLE-2011-BLG-0462, around 5,200 light-years away. [ 2] The nearest known black hole is Gaia BH1, which was discovered in September 2022 by a team led by Kareem El-Badry. Gaia BH1 is 1,560 light-years away from Earth in the direction of the constellation Ophiuchus.
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.
Sagittarius A*, abbreviated as Sgr A* (/ ˈ s æ dʒ ˈ eɪ s t ɑːr / SADGE-AY-star [3]), is the supermassive black hole [4] [5] [6] at the Galactic Center of the Milky Way.Viewed from Earth, it is located near the border of the constellations Sagittarius and Scorpius, about 5.6° south of the ecliptic, [7] visually close to the Butterfly Cluster (M6) and Lambda Scorpii.
CXOU J132527.6-430023 (a candidate stellar mass black hole outside of the Local Group) [ 11] Cygnus X-1. Cygnus X-3. GRO J0422+32 (possibly the smallest black hole yet discovered) [ 12] GRO J1655-40 / V1033 Sco (at one time considered the smallest black hole known) [ 13] GRS 1124-683 / GU Mus. GRS 1915+105 / V1487 Aql.
1967 — John Wheeler introduces the term "black hole" in his lecture to the American Association for the Advancement of Science [ 1] 1968 — Brandon Carter uses Hamilton–Jacobi theory to derive first-order equations of motion for a charged particle moving in the external fields of a Kerr–Newman black hole. 1969 — Roger Penrose discusses ...
In general relativity, the Oppenheimer–Snyder model is a solution to the Einstein field equations based on the Schwarzschild metric describing the collapse of an object of extreme mass into a black hole. [ 1] It is named after physicists J. Robert Oppenheimer and Hartland Snyder, who published it in 1939. [ 2]
Supermassive black holes are classically defined as black holes with a mass above 100,000 ( 105) solar masses ( M☉ ); some have masses of several billion M☉. [ 12 ] Supermassive black holes have physical properties that clearly distinguish them from lower-mass classifications. First, the tidal forces in the vicinity of the event horizon are ...