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A black hole formed in this way is called a primordial black hole and is the most widely accepted hypothesis for the possible creation of micro black holes. Computer simulations suggest that the probability of formation of a primordial black hole is inversely proportional to its mass.
IGR J17091 is a stellar mass black hole with a mass between 3 and 10 M ☉. It is a binary system in which a star orbits the black hole. [4] Its small size may make it a candidate for the smallest black hole discovered. [5] However, as of 2017 its mass was described as "unknown". [6]
OJ 287 core black holes — a BL Lac object with a candidate binary supermassive black hole core system [23] PG 1302-102 – the first binary-cored quasar — a pair of supermassive black holes at the core of this quasar [24] [25] SDSS J120136.02+300305.5 core black holes — a pair of supermassive black holes at the centre of this galaxy [26]
Scientists have discovered what may be the smallest-known black hole in the Milky Way galaxy and the closest to our solar system - an object so curious that they nicknamed it 'the Unicorn.' The ...
The mass of the black hole in GRO J0422+32 falls in the range 3.66 to 4.97 solar masses. [6] This is the smallest yet found for any stellar black hole, and near the theoretical upper mass limit (~2.7 M ☉) for a neutron star. Further analysis in 2012 calculated a mass of 2.1 M ☉, which raises questions as to what the object actually is. [7]
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 ...
Direct collapse black hole: a black hole formed from the collapse of hydrogen, rather than from a star; Primordial black hole, a black hole that might have formed in a similar fashion to a star during the Universe's earliest epochs; Extremal black hole, the smallest possible black hole that could exist while rotating at a specific speed; White ...
XTE J1650−500 is a binary system containing a stellar-mass black hole candidate and 2000–2001 transient binary X-ray source located in the constellation Ara. In 2008, it was claimed that this black hole had a mass of 3.8±0.5 solar masses , [ 3 ] which would have been the smallest found for any black hole; smaller than GRO 1655−40 , the ...