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Chandra helps confirm evidence of jet in Milky Way’s black hole |
Astronomy.com http://www.astronomy.com/news/2013/1...ays-black-hole |
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On 11/21/13, 8:43 PM, Yousuf Khan wrote:
Chandra helps confirm evidence of jet in Milky Way’s black hole | Astronomy.com http://www.astronomy.com/news/2013/1...ays-black-hole The study shows that the spin axis of Sgr A* is pointing in one direction, parallel to the rotation axis of the Milky Way, which indicates to astronomers that gas and dust have migrated steadily into Sgr A* over the past 10 billion years. If the Milky Way had collided with large galaxies in the recent past and their central black holes had merged with Sgr A*, the jet could point in any direction. The jet appears to be running into gas near Sgr A*, producing X-rays detected by Chandra and radio emission observed by the VLA. The two key pieces of evidence for the jet are a straight line of X-ray-emitting gas that points toward Sgr A* and a shock front — similar to a sonic boom — seen in radio data, where the jet appears to be striking the gas. Additionally, the energy signature, or spectrum, in X-rays of Sgr A* resembles that of jets coming from supermassive black holes in other galaxies. |
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