On Mon, 2016-02-15 at 09:31 -0500, Joe Taylor wrote: > Hi all, > > After spending a most enjoyable week on the sunny Caribbean island > of > St. Lucia, I'm home again. Returning was quite a shock -- the > temperature here on arrival was 6 F. > > Probably you heard last Thursday's announcement about the detection > of > gravitational waves originating from a pair of colliding black > holes, > some 1.3 billion light years away, in the southern sky. This is a > major > discovery in physics -- it opens a new window on the universe, if > you > like.
The discovery opens up a few new questions, which I have not found any answers to on the internet. Previously it was thought black holes preserve all information (and entropy), and radiate it back out over the lifetime of a black hole, through Hawking radiation. This event radiated out 3 solar masses worth of energy as something other than Hawking radiation. Does this impact the preservation of information and black hole entropy theories? Does the black hole retain all the spin and charge of those 3 solar masses worth of radiated energy? Does this place an upper limit on the density (or information/surface area) of a black hole? Or, is the amount of information on the surface area of a black hole (especially a stellar mass one) so far from the maximum limits that no black hole is truly dense from this perspective? As you can see from the questions above, I am not qualified in the least in this area. Just wondering some random things, that the internet does not (yet?) seem to have any answers to :) -- All rights reversed
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