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English: Artist's rendition of a black hole with an orbiting companion star that overflows its Roche lobe. Mass from the companion star is drawn towards the black hole, forming an accretion disk. GRO J1655-40 is the second so-called 'microquasar' discovered in our Galaxy. Microquasars are black holes of about the same mass as a star. They behave as scaled-down versions of much more massive black holes that are at the cores of extremely active galaxies, called quasars. Astronomers have known about the existence of stellar-mass black holes since the early 1970s. Their masses can range from 3.5 to approximately 15 times the mass of our Sun. Using Hubble data, astronomers were able to describe the black-hole system. The companion star had apparently survived the original supernova explosion that created the black hole. It is an aging star that completes an orbit around the black hole every 2.6 days. It is being slowly devoured by the black hole. Blowtorch-like jets (shown in blue) are streaming away from the black-hole system at 90 percent of the speed of light.
日期 (released)
来源 https://hubblesite.org/contents/media/images/2002/30/1273-Image.html
作者 ESA, NASA, and Felix Mirabel (French Atomic Energy Commission and Institute for Astronomy and Space Physics/Conicet of Argentina)

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Artist's View of Black Hole and Companion Star GRO J1655-40

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da19afbdec9668502d387f08435b13e7055edcc4

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当前2019年4月26日 (五) 15:172019年4月26日 (五) 15:17版本的缩略图3,000 × 2,400(679 KB)FriedrichKiefererBetter quality.
2005年3月15日 (二) 23:122005年3月15日 (二) 23:12版本的缩略图3,000 × 2,400(112 KB)Bebenko~commonswikicopy-paste from english wiki

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