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Supermassive Black Holes And Hot Galaxies  
User currently offlineNoWorries From United States of America, joined Oct 2006, 539 posts, RR: 1
Posted (2 years 2 weeks 5 days 3 hours ago) and read 4743 times:

Interesting article here about massive back holes that had previously gone undetected.

The article doesn't mention it, but could this be some the missing dark matter that astrophysicists have been searching for ...

http://www.bbc.co.uk/news/science-environment-19421453

3 replies: All unread, jump to last
 
User currently offlinenomadd22 From United States of America, joined Feb 2008, 1864 posts, RR: 0
Reply 1, posted (2 years 2 weeks 4 days 23 hours ago) and read 4684 times:

Quoting NoWorries (Thread starter):
The article doesn't mention it, but could this be some the missing dark matter that astrophysicists have been searching for ...

No it couldn't. Dark matter masses more than visible matter by a good factor. A few thousand extra black holes per galaxy would be an insignificant amount of mass compared to that. Ten million stellar black holes in every galaxy wouldn't be significant compared to the amount of dark matter they need to balance things out.



Andy Goetsch
User currently offlineOroka From Canada, joined Dec 2006, 913 posts, RR: 0
Reply 2, posted (2 years 2 weeks 4 days 13 hours ago) and read 4587 times:

I suspect there are ALOT more stellar black holes hiding out in plain sight... well, you know. The first few generations of stars would have been O class stars, big enough to create black holes... a lot probably merged to become supermassive, but im sure there are a lot still floating around minding their own business.

User currently offlinemaxter From Australia, joined May 2009, 223 posts, RR: 0
Reply 3, posted (2 years 1 week 5 days 6 hours ago) and read 4164 times:

Roll on a decent gravity wave detector... I wonder of the one offered to Western Australia by the US will get legs and be built.


maxter
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