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Below: supermassive black hole devouring a star in galaxy RX J1242−11 – X-ray (left) and optical (right). [98] Unambiguous dynamical evidence for supermassive black holes exists only for a handful of galaxies; [99] these include the Milky Way, the Local Group galaxies M31 and M32, and a few galaxies beyond the Local Group, such as NGC 4395.
The accretion-disc energy-production mechanism was finally modeled in the 1970s, and black holes were also directly detected (including evidence showing that supermassive black holes could be found at the centers of this and many other galaxies), which resolved the concern that quasars were too luminous to be a result of very distant objects or ...
Size comparison of the event horizons of the black holes of TON 618 and Phoenix A.The orbit of Neptune (white oval) is included for comparison. As a quasar, TON 618 is believed to be the active galactic nucleus at the center of a galaxy, the engine of which is a supermassive black hole feeding on intensely hot gas and matter in an accretion disc.
The centers of galaxy clusters contain the universe’s most massive galaxies, which, in turn, contains gigantic black holes ranging in mass from millions to tens of billions of times that of the ...
The central elliptical cD galaxy of this cluster, Phoenix A (RBS 2043, 2MASX J23444387-4243124), hosts an active galactic nucleus that has been described as sharing both the properties of being a quasar and a type 2 Seyfert galaxy, which is powered by a central supermassive black hole. The galaxy has an uncertain morphology.
Most of the largest and most active jets are created by supermassive black holes (SMBH) in the centre of active galaxies such as quasars and radio galaxies or within galaxy clusters. [4] Such jets can exceed millions of parsecs in length. [2]
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.
The host galaxy of S5 0014+81 is an FSRQ (Flat Spectrum Radio Quasar) blazar, a giant elliptical galaxy that hosts a supermassive black hole at its center. In 2009, a team of astronomers using the Swift spacecraft used the luminosity of S5 0014+81 to measure the mass of its black hole.