WOW !!
A third black hole merger detected with LIGO !!
BH #1 31.2 solar masses
BH #2 19.4 solar masses
resulting combined BH 48.7 solar masses
energy radiated away as gravitational waves 2 solar masses
distance 2.9 billion light years
possibility exists one BH was spinning 'backwards' relative to it's premerger orbit and the other BH, more samples of such mergers needed for study. Theoretical work suggests contra-rotation might indicate BHs were in a star cluster and not in a stellar binary as stellar binary progenitors would have correlated spins.
A third black hole merger detected with LIGO !!
BH #1 31.2 solar masses
BH #2 19.4 solar masses
resulting combined BH 48.7 solar masses
energy radiated away as gravitational waves 2 solar masses
distance 2.9 billion light years
possibility exists one BH was spinning 'backwards' relative to it's premerger orbit and the other BH, more samples of such mergers needed for study. Theoretical work suggests contra-rotation might indicate BHs were in a star cluster and not in a stellar binary as stellar binary progenitors would have correlated spins.
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