Supermassive black hole | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-08

This is an audio version of the Wikipedia Article:
Supermassive black hole


00:00:36 1 Description
00:01:51 2 History of research
00:07:04 3 Formation
00:11:31 4 Doppler measurements
00:13:38 5 In the Milky Way
00:15:27 6 Outside the Milky Way
00:22:18 7 Hawking evaporation
00:22:30 8 See also
00:22:40 9 References



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SUMMARY
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A supermassive black hole (SMBH) is the largest type of black hole, on the order of hundreds of thousands to billions of solar masses (M☉). Observational evidence indicates that all or nearly all massive galaxies contain a supermassive black hole, located at the galaxy's center. In the case of the Milky Way, the supermassive black hole corresponds to the location of Sagittarius A*. Accretion of interstellar gas onto supermassive black holes is the process responsible for powering quasars and other types of active galactic nuclei.