startswithabang:

LIGO’s black holes probably did not come from one star“The best thing I can say about this idea is that it falls into the category of “not automatically impossible.” The tough thing about it is that even for the most rapid rotators, the stars themselves are still highly non-relativistic, meaning they spin at velocities well below (significantly less than 10%) the speed of light, while the inspiraling black holes were moving at speeds very close to (about 60%) the speed of light
Photo by Captain-LeChene with the username @Captain-LeChene,  February 26, 2016 at 12:02 AM and the text says 'startswithabang:

LIGO’s black holes probably did not come from one star“The best thing I can say about this idea is that it falls into the category of “not automatically impossible.” The tough thing about it is that even for the most rapid rotators, the..'