- #1
Pengwuino
Gold Member
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- 20
I stumbled upon an article while doing some research that had a statement saying that Hawking radiation can be found in places beyond black hole horizons. This lead me to this paper (which I'm not actually interested in beyond it's reference to the existence of hawking radiation outside of gravity) about observed Hawking Radiation in lasers
http://arxiv.org/abs/1009.4634
So apparently Hawking radiation is not simply confined to black hole horizons. The question I have, however, is if Hawking radiation exists in space-times that do not have astrophysical black holes. For example, can a simple planet exhibit hawking radiation? Also, even if you do have a black hole, does the Hawking temperature only apply to the horizon? That is, can the area an appreciable distance away from the event horizon have a temperature as seen from an observer at infinity?
http://arxiv.org/abs/1009.4634
So apparently Hawking radiation is not simply confined to black hole horizons. The question I have, however, is if Hawking radiation exists in space-times that do not have astrophysical black holes. For example, can a simple planet exhibit hawking radiation? Also, even if you do have a black hole, does the Hawking temperature only apply to the horizon? That is, can the area an appreciable distance away from the event horizon have a temperature as seen from an observer at infinity?