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IGR J17091 - a binary system in which a sun-like star orbits the black hole. It is found in the bulge of the Milky Way galaxy, about 28,000 light years away from Earth. Observations with Chandra have clocked the fastest wind ever seen blowing off a disk around this stellar-mass black hole at about 20 million miles per hour. The wind, which comes from a disk of gas surrounding the black hole, may be carrying away much more material than the black hole is capturing and could be variable over time.
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Contrary to the popular perception of black holes pulling in all of the material that gets close, 95% of the matter in the disk around IGR J17091 is expelled by the wind. And other interesting fact is production of winds can stifle radio jets.
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Astronomers believe that magnetic fields in the disks of black holes are responsible for producing both winds and jets. The geometry of the magnetic fields and rate at which material falls towards the black hole must influence whether jets or winds are produced.
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They said this because jet from the black hole was not present when the ultra-fast wind was seen, although a radio jet is seen at other times. Fascinating!
http://www.physorg.com/news/2012-02-...lack-hole.html