Pretty cool.... I understand that there are eventual plans to have an infarometer in space being comprised of 3 separate satellites separated by a great distance that would be even more sensitive than anything we could build on Earth
Originally posted by @vivify Question regarding black holes:
Black holes die due to radiating energy (Hawking radiation). But how does radiation escape a the gravity of a black hole in the first place?
I'm not an expert on this so will someone please correct me if I got any detail here not exactly correct;
The answer is Hawking radiation escapes directly from near but not below the event horizon thus that explains how it is possible to escape (else if from below the event horizon then that would be impossible because no radiation can escape directly from below the event horizon! ). The theory is that each time a particle of Hawking radiation escapes directly from near the event horizon, its equivalent mass (which is unimaginably minute), and slightly confusingly I would say, is taken from the singularity of the black hole even though there is considerable distance of separation between the event horizon and the singularity. For this to work, there has to be some kind of 'communication via gravity at a distance' between around the event horizon and the singularity.
Originally posted by @humy I'm not an expert on this so will someone please correct me if I got any detail here not exactly correct;
The answer is Hawking radiation escapes directly from near but not below the event horizon thus that explains how it is possible to escape (else if from below the event horizon then that would be impossible because no radiation can escape directly from ...[text shortened]... 'communication via gravity at a distance' between around the event horizon and the singularity.
There was a Scientific American article about that and they said a pair of particles popped out spontaneously and one of the pair goes in and the other goes out right by the event horizon so gradually the black hole loses mass till it evaporates probably as a black hole the size of a proton or some such and then explodes as a white hole and whatever is left is now a bundle of expanding gamma radiation.
01 Oct '17 09:143 edits
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