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View Full Version : Black hole swarm at galactic center?



TravisM
2005-Feb-12, 09:02 PM
:o From here (http://chandra.harvard.edu/photo/2005/gctr_bin/).


The high concentration of X-ray binaries in this small region was a surprise - other observations of a larger region around Sgr A* had suggested that there was only a 20 percent chance that even one X-ray binary would be found within 3 light years of Sgr A*. The observed high concentration of X-ray binaries is strong circumstantial evidence that a dense swarm of 10,000 or more stellar-mass black holes and neutron stars has formed around Sgr A*.

Awesome.

TravisM
2005-Feb-17, 05:21 AM
I'm suprised this went untouched...

Maddad
2005-Feb-17, 07:01 AM
I was thinking about responding, but I sounded lame to myself. There should be a ton of those because the galaxy produces so many massive stars that would eventually go supernova and end as black hole. Since encounters between stars tends to send the lighter one to a higher orbit and the more massive one to a lower orbit, the galatic center should have a bazillion of the things.

TravisM
2005-Feb-17, 12:55 PM
I'm wondering now though, could we intereperet this as million mass black holes in distant galaxies?

Maddad
2005-Feb-17, 08:20 PM
The core of the Milky Way is 25,000 light-years away. The next closest galaxy, Andromeda, is 2,000,000 light-years. Distant galaxies are 10,000,000,000 light-years away, 400,000 times as far away as Sgr A*. Not much chance of mistaking that.