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Forum: Science & Technology 2019-11-05, 19:12
Replies: 60
Views: 34,732
Posted By ewmayer
@DrS: Thanks - that is very useful. The Wikipedia...

@DrS: Thanks - that is very useful. The Wikipedia entry on Gravitational wave (https://en.wikipedia.org/wiki/Gravitational_wave) gives a similar-looking formula for the rate of orbital decay of a...
Forum: Science & Technology 2019-11-04, 18:50
Replies: 60
Views: 34,732
Posted By ewmayer
How could the orbit decay without AM loss?

How could the orbit decay without AM loss?
Forum: Science & Technology 2019-11-03, 18:44
Replies: 60
Views: 34,732
Posted By ewmayer
Regarding the carrying-away of orbital angular...

Regarding the carrying-away of orbital angular momentum - or more generally, orbital energy - by gravitational radiation emission, I stupidly forgot the prototypical exemplar of this, the now-classic...
Forum: Science & Technology 2019-11-03, 02:41
Replies: 60
Views: 34,732
Posted By ewmayer
You need to differentiate between the mass/energy...

You need to differentiate between the mass/energy enclosed by the event horizon and that outside it - even a hypothetical BH with a vacuum outside the EH has appreciable mass/energy outside the EH,...
Forum: Science & Technology 2019-11-02, 22:11
Replies: 60
Views: 34,732
Posted By ewmayer
That same issue was the "I needed to refresh" bit...

That same issue was the "I needed to refresh" bit I mentioned - but I found multiple references mentioned precisely such a radiation-away of excess angular momentum, so either they're all wrong or...
Forum: Science & Technology 2019-11-02, 19:29
Replies: 60
Views: 34,732
Posted By ewmayer
A similar discussion thread in the astronomy...

A similar discussion thread in the astronomy subforum on StackExchange:
...
Forum: Science & Technology 2006-06-20, 18:27
Replies: 60
Views: 34,732
Posted By ewmayer
A more interesting issue which I'll leave as an...

A more interesting issue which I'll leave as an exercise for the motivated reader is: does Hawking radiation violate the second law of thermodynamics? We know from the by-now well-established theory...
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