By virtue of the facts explained thus far about black holes no radiation seems possible from them. The new theory if proved true may probably unfold some myths about black holes. Can it lead to understand that there is something diffrent than the black hole assumed presently? Whether Hawkins based his theory on the observed facts or just a thought experiment?
2006-09-14 19:45:09 · 5 answers · asked by orsel 2 in Science & Mathematics ➔ Physics
Petelephant is correct; Hawking radiation is based on theory. According to Hawking's calculations, the magnitude of the radiation goes down as the square of its mass goes up, with the result that only very small black holes would emit significant energy in this manner.
The dilemma is that such small holes are not known to exist, because any formed in the Big Bang would have already evaporated, and there is no known mechanism for forming new ones. This means that Hawking Radiation may be essentially unobservable.
2006-09-14 20:26:17 · answer #1 · answered by injanier 7 · 0⤊ 1⤋
This radiation has not been observed. For larger black holes, the effect is overwhelmed by radiation from infalling matter. To get a larger effect from Hawking radiation requires a *very* small black hole which would make detection correspondingly difficult. Also, radiation at detectable levels only happens for ordinary black holes after they have radiated for a long period of time. For black holes formed from the Big Bang, this amount of time may not have passed yet.
2006-09-15 04:33:52 · answer #2 · answered by mathematician 7 · 1⤊ 0⤋
No such radiation has yet been observed. Black holes are scarce in these parts, so performing the fussy observations needed to detect Hawking radiation is not now possible. The radiation would be swamped by radiation from other sources, such as from debris falling into the hole.
2006-09-14 20:28:23 · answer #3 · answered by Anonymous · 0⤊ 1⤋
no, it is calculated for blackholes, which are difficult to tell where they are. hawking based his calculations mixing quantum field theory and general relativity in the horizon of the black hole. it is theoretical, not observed, but we all expect this to be true. :)
2006-09-14 19:49:28 · answer #4 · answered by petelephant 3 · 0⤊ 0⤋
Wow, your question may not get much answers. Too difficult.
2006-09-14 19:47:58 · answer #5 · answered by Street Smart 4 · 0⤊ 0⤋