LIGO sensitivity compared with the human eye
[Moderator's note: Quoted text moved to top, and trimmed. -P.H.]
a) LIGO can (easily) see a source at one billion light years
distance which emits the energy of 3 solar masses in 1 second
(like the black hole mergers!)
Does the figure of 3 solar masses include only gravitational energy, or is
it total energy including electromagnetic?
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