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accretion disk |
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accretion disk [ə′krē·shən ‚disk] (astronomy) A viscous structure consisting of gas lost by a red giant or supergiant flowing around a companion main-sequence star or compact object (white dwarf, neutron star, or black hole). How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| ? Mentioned in | ? References in periodicals archive | |
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Had the black hole been rotating any
slower, it couldn't have whipped nearby space-time into quite as
strong a tornado, and the inner part of the accretion disk couldn't
have extended quite so close to the event horizon--the boundary between
the black hole's maw and the outside world. Laboratory
scientists have demonstrated on Z-pinch facilities that scaled versions
of these accretion disk conditions can be recreated for close-up
scrutiny. Gas from the
star is pulled toward the black hole, where it forms what's called
an accretion disk. |
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