Restr:Accretion disk.jpg

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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.
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Mammenn https://hubblesite.org/contents/media/images/2002/30/1273-Image.html
Aozer ESA, NASA, and Felix Mirabel (French Atomic Energy Commission and Institute for Astronomy and Space Physics/Conicet of Argentina)

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This file, which was originally posted to Hubble Site, was reviewed on 17 May 2020 by reviewer Green Giant, who confirmed that it was available there under the stated license on that date.

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

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18 Du 2002

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695 507 byte

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red26 Ebr 2019 da 15:17Munud eus stumm an 26 Ebr 2019 da 15:173 000 × 2 400 (679 Kio)FriedrichKiefererBetter quality.
15 Meu 2005 da 23:12Munud eus stumm an 15 Meu 2005 da 23:123 000 × 2 400 (112 Kio)Bebenko~commonswikicopy-paste from english wiki

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