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Fortunate
2007-Oct-30, 06:24 PM
Using two NASA satellites, astronomers have discovered the heftiest known black hole to orbit a star. The new black hole, with a mass 24 to 33 times that of our Sun, is more massive than scientists expected for a black hole that formed from a dying star.

http://www.physorg.com/news112963248.html


The previous record holder for largest stellar-mass black hole is a 16-solar-mass black hole in the galaxy M33, announced on October 17.

Universe Today (http://www.bautforum.com/universe-today-story-comments/65985-heaviest-stellar-mass-black-hole-discovered.html) had an article about the record announced on October 17.

Fortunate
2007-Oct-30, 09:14 PM
BA has a very nice article on this on his Bad Astronomy web site:
http://www.badastronomy.com/bablog/2007/10/30/biggest-stellar-mass-black-hole-found/#more-1867

And now Universe Today also:
http://www.universetoday.com/2007/10/30/an-even-more-massive-black-hole/

DyerWolf
2007-Oct-31, 02:34 PM
Do I hear a "ToSeek-ed (http://www.bautforum.com/astronomy/66011-monster-stellar-black-hole-busts-theory.html)?":D












(First one...:lol:):dance:

...Thanks for the additional links, tho!

tonyman1989
2007-Nov-01, 03:49 AM
How large would a start have to be to form a black hole this size?

Urbane Guerrilla
2007-Nov-01, 05:08 AM
Guess that would depend on the scale of previous mass loss around the red-giant stage.

I have only the most general idea of this: that a smallish percentage of the star's main-sequence mass is "boiled" off the star before final collapse. If there is an only mildly algebraic quantitative explanation out there, I'd like to read it.