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Nothing comes out of a black hole, so we can't get observations from the inside. (There are nit-picky theoretical ways in which a black hole can evaporate, key
by perlgeek 7y ago
Nothing comes out of a black hole, so we can't get observations from the inside.
(There are nit-picky theoretical ways in which a black hole can evaporate, keyword "Hawking Radiation", but as far as I know that hasn't been observed, because it's too weak and too far away. But even then we learn about its surface/event horizon, not its inside).
- cthalupa 7y agoWe haven't observed hawking radiation coming off of a black hole, but we have observed it in lab settings. https://iopscience.iop.org/article/10.1088/1367-2630/10/10/103001/pdf https://iopscience.iop.org/article/10.1088/1367-2630/10/10/1...
- perlgeek 7y agoI can't let this comment stand as it is. This is a "numerical observation", so a simulation. And not of a black hole, but of a model of a black hole in one dimension in a Bose-Einstein-Condensate. Nobody has created a black hole in a lab and measured its radiation.
- cthalupa 7y agoI specifically stated we have not seen it coming off of a black hole, but dismissing this as just a simulation is silly and reductionist. To do the same in a counter-argument, if I can accurately model fluid dynamics, I don't have to go drop a log in my bathtub to observe the effects. But sure, if you want, we can discount that specific study and focus on others that use different methods to detect it that aren't "just simulations" https://arxiv.org/abs/1009.4634 https://arxiv.org/abs/1009.4634 https://arxiv.org/abs/1401.6612 https://arxiv.org/abs/1401.6612