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NGC 3842 is an elliptical galaxy in the constellation of Leo. It was discovered by William Herschel. It is notable for containing one of the largest black holes ever detected, reported to have a mass of 9.7 billion solar masses. [2] It is around 330 million light-years distant from Earth. NGC 3842 is the brightest member [3] of the Leo Cluster ...
The Leo Cluster, however, mostly contains spiral galaxies, suggesting that it is much younger than other comparable clusters, such as the Coma Cluster. It is also home to one of the universe's largest known black holes, which lies in the center of NGC 3842. The black hole is 9.7 billion times more massive than the Sun. [4]
At this stage, a black hole would have a Hawking temperature of T P / 8π (5.6 × 10 30 K), which means an emitted Hawking particle would have an energy comparable to the mass of the black hole. Thus, a thermodynamic description breaks down. Such a micro black hole would also have an entropy of only 4 π nats, approximately the minimum ...
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.
A black hole of three million solar masses is comparable to the mass of the Milky Way's black hole, Sagittarius A*. [5] However, another study could not confirm this, suggesting at most an intermediate-mass black hole of a few 10 5 solar masses. [10] It has been suggested that Leo I is a tidal debris stream in the outer halo of the Milky Way ...
NGC 3504 is the brightest member of the NGC 3504 Group (also known as LGG 227), which is a member of the Leo II Groups, a series of galaxies and galaxy clusters strung out from the right edge of the Virgo Supercluster. [18]
This is a list of known black holes that are close to the Solar System. It is thought that most black holes are solitary, but black holes in binary or larger systems are much easier to detect. [1] Solitary black holes can generally only be detected by measuring their gravitational distortion of the light from more
Leo: Right ascension: 10 h 07 m 58.264 s: ... Its 1.5 billion–solar mass black hole is the most distant known black hole with a mass of over one billion solar ...