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Time stops at the black hole event horizon, so how can the hole form?
Here's an excerpt from 2007 Science Magazine:
"Physicist Lawrence Krauss and Case Western Reserve colleagues think they have found the answer to the paradox. In a paper accepted for publication in Physical Review D, they have constructed a lengthy mathematical formula that shows, in effect, black holes can't form at all."
"If black holes radiate away their mass over time, as Hawking showed, then they should evaporate before they even form, Krauss says."
http://news.sciencemag.org/sciencenow/2007/06/21-0...
Answers to my previously posted question simply said time would appear to pass normally for anyone/anything falling in, so what we see (a frozen image of the faller) isn't "real". Time dilation is real, not just a mirage; and from our perspective, the hole evaporates BEFORE anyone/anything falls in.
Has anyone seen any followup refuting the claim in this 2007 article or a better explanation of how anything can fall into an event horizon with time stopped from our outside time reference in which the black hole evaporates in a finite time?
Never mind, guys. I just got a reply from Dr. Krauss (he's at Arizona State now) saying the matter is still unresolved. Interestingly, I guess the theorists still can't fully explain how matter can fall into a black hole when time stops at the horizon.
6 Answers
- Chug-a-LugLv 71 decade agoFavorite Answer
"...from our perspective, the hole evaporates BEFORE anyone/anything falls in..."
For astronomical black holes, the evaporation time is ≈ 10^61 times the age of the Universe. (...http://casa.colorado.edu/~ajsh/hawk.html...) Therefore external observers would have to live longer than 10^61 years to see the hole evaporate.
Source(s): http://casa.colorado.edu/~ajsh/hawk.html - blaeserLv 44 years ago
Entropy is maximized around the singularity on the form HORIZON. So, on a similar time as time is frozen, it does not create a cleansing soap scum buildup that Billy Mays needs to help restoration. each thing on the form horizon will bypass by and proceed till being mixed. count drawing near yet no longer touching the form horizon already reports a distinction in time while in comparison with observers.
- Anonymous1 decade ago
time doesn't stop at the event horizon.
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