Intermediate black holea.

[alokmohan]

Black hole boldly goes where no black hole has gone before<br /><br />PRESS RELEASE<br />Date Released: Wednesday, January 3, 2007<br />Source: European Space Agency<br /><br />image<br /><br />Astronomers have found a black hole where few thought they could ever exist, inside a globular star cluster. The finding has broad implications for the dynamics of stars clusters and also for the existence of a still-speculative new class of black holes called 'intermediate-mass' black holes.<br /><br />The discovery is reported in the current issue of Nature. Tom Maccarone of the University of Southampton in England leads an international team on the finding, made primarily with the European Space Agency's XMM-Newton satellite.<br /><br />Globular clusters are dense bundles of thousands to millions of old stars, and many scientists have doubted that black holes could survive in such an exclusive environment. Computer simulations show that a newly formed black hole would first sink towards the centre of the cluster but quickly get gravitationally slingshot out entirely when interacting with the cluster's myriad stars. <br /><br />The new finding provides the first convincing evidence that some black hole might not only survive but grow and flourish in globular clusters. What has astonished astronomers is how quickly the black hole was found.<br /><br />"We were preparing for a long, systematic search of thousands of globular clusters with the hope of finding just one black hole," said Maccarone. "But bingo, we found one as soon as we started the search. It was only the second globular cluster we looked at."<br /><br />The search continues to find more, Maccarone said, yet only one black hole was needed to resolve the decades-old discussion about black holes and globular clusters.<br /><br />Scientists say there are two main classes of black holes. Supermassive black holes containing the mass of millions to billions of suns are found in the core of most galaxies, including our own. A quasar is o

 

[kyle_baron]

No offence to you, but that's actually old news. My Sky & Telescope Magazine reported an intermediate blackhole in the M4 globular cluster, at least 2 years ago. <div class="Discussion_UserSignature"> <p><font size="4"><strong></strong></font></p> </div>

 

[plutonian]

burn

 

[alokmohan]

It is a press note of ESA posted 3.1.I fail to understand how sky and telescope magazine posted it 2 years back.Till now we have heard of stellar black holes ,a few suns heavy and massive black hole million times solar mass.Scientists were thinking if there is anything in between.Can you sgive sky and telescope link?

 

[alokmohan]

http://news.bbc.co.uk/2/hi/science/nature/6231623.stm

 

[kyle_baron]

<font color="yellow"><br />Can you sgive sky and telescope link? </font><br /><br />Here's an article from 2003:<br /><br />http://skytonight.com/news/3306661.html<br /><br />I guess the globular cluster was M15. <div class="Discussion_UserSignature"> <p><font size="4"><strong></strong></font></p> </div>

 

[alokmohan]

Apost of2003.Theory resurrected.Thak you for the nice post.

 

[alokmohan]

http://www.sciencedaily.com/upi/index.php?feed=Science&article=UPI-1-20070104-16471300-bc-britain-blackhole.xml

 

[alokmohan]

Getting black hole at cluster of galaxies was not in our thought.