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A Supermassive Black Hole Was Ejected Out Of Its Home Galaxy

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Posted in Science on 5th Jun, 2012 07:54 PM by AlexMuller

The Chandra X-Ray Observatory announced that’s it has observed something unprcedented: a supermassive black hole being ejected from its own galaxy at speeds of millions of miles per hour. The evidence suggests that the ejection was caused when the black hole collided with the supermassive black hole of another galaxy, producing an immense recoil force.

 

“It’s hard to believe that a supermassive black hole weighing millions of times the mass of the sun could be moved at all, let alone kicked out of a galaxy at enormous speed,” said study leader Francesca Civano in a press release. “But these new data support the idea that gravitational waves — ripples in the fabric of space first predicted by Albert Einstein but never detected directly — can exert an extremely powerful force.”

 

The ejection of the black hole actually took place about 4 billion years ago, as astronomers observe the radiation from galaxy CID-42, which is 4 billion light years from Earth. Astronomers reviewing data from the Hubble Telescope first noticed something interesting was going on. The visual data was then confirmed by telescopes on the ground.

 

“The previous data told us that there was something special going on, but we couldn’t tell if there were two black holes or just one,” said study co-author Martin Elvis. “We needed new X-ray data to separate the sources.”

 

That’s when they turned to the Chandra X-Ray Observatory, which was directed at the center of the visual data. The X-ray sources were reviewed with the telescope’s high-resolution camera to separate the two X-ray sources – the first being the black hole, and the second being the star cluster it left behind.

 

(There are two other possible explanations for the visual data, involving either the collision of three supermassive black holes or two supermassive black holes spiralling towards one another. Neither seems nearly as likely, though, as it would mean that one X-ray signature was being obscured, and there’s little evidence of that.)

 



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Comments

Author: Guest
Posted: 2013-11-24
+0
This is a good posting, I was woidernng if I could use this write-up on my website, I will link it back to your website though. If this is a problem please let me know and I will take it down right away Reply


 

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