Timeline for Can black holes form in a finite amount of time?
Current License: CC BY-SA 2.5
27 events
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| Dec 9, 2020 at 17:59 | comment | added | Edouard | My impression had been that stars pass thru the usual cycle, ending in the formation of a neutron star, before collapsing (if their mass is sufficient) in the formation of black holes and (usually) leaving a former binary partner continuing in the elliptical orbit they had previously shared. The former partners of more than 90, in those orbits, have been seen telescopically. | |
| Dec 9, 2020 at 17:53 | comment | added | Edouard | Nikodem J. Poplawski has, between 2010 & 2020, written numerous preprints on the Arxiv site (several of them subsequently printed by such reputable publishers as Elsevier) showing that, by use of 1929's Einstein-Cartan Theory rather than 1915's General Relativity, explanations employing singularities can be avoided in a model of inflation based on torsion, rather than the non-rotating (scalar) field usually employed in inflationary cosmology. Like some descriptions of them on PSE, the preprints can be found by his name. | |
| May 18, 2019 at 17:15 | answer | added | DoctorBill | timeline score: 3 | |
| Aug 22, 2018 at 21:54 | answer | added | Felix Tritschler | timeline score: 5 | |
| Jun 4, 2018 at 12:43 | vote | accept | Itai Bar-Natan | ||
| Mar 15, 2018 at 1:55 | comment | added | user4552 | related: physics.stackexchange.com/questions/391848/… | |
| Mar 10, 2018 at 16:02 | answer | added | David Clark | timeline score: -2 | |
| Feb 5, 2018 at 15:01 | answer | added | Dan_LXI | timeline score: -1 | |
| Aug 31, 2016 at 19:35 | comment | added | user1062760 | Seems like every single answer here missed the actual point and went straight to showing off their maths skills . the question simply is that if you are far away from collapsing core of a star (say on earth) would you ever see the collapsing core form a blackhole before infinite time has passed on earth? | |
| Nov 16, 2015 at 22:31 | answer | added | gewinnste | timeline score: 2 | |
| Nov 17, 2014 at 0:10 | comment | added | Zo the Relativist | Also note that for the Schwarzschild spacetime, the singularity is spacelike, so this answer to your question is "yes" for the case of the Kruskal extension of the Schwarzschild spacetime. | |
| Nov 16, 2014 at 22:50 | comment | added | user4552 | duplicated by physics.stackexchange.com/q/21319 | |
| Nov 14, 2014 at 22:57 | answer | added | user4552 | timeline score: 61 | |
| May 31, 2013 at 13:21 | history | edited | Qmechanic♦ |
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| Apr 12, 2011 at 7:28 | answer | added | finbot | timeline score: 6 | |
| Feb 12, 2011 at 10:15 | comment | added | Daniel Grumiller | I suggest to replace "singularity" by "an intersection with an event horizon" in your rephrased question, since you want to know about black hole formation and not singularity formation. The answer is then "yes", with the Vaidya solution being the simplest example. See e.g. Fig. 4 in arxiv.org/abs/0809.2213 for its Penrose diagram. | |
| Feb 12, 2011 at 8:22 | history | tweeted | twitter.com/#!/StackPhysics/status/36339407153926144 | ||
| Feb 12, 2011 at 6:48 | comment | added | Gordon | Spacelike singularities occur in uncharged nonrotating black holes. You must then distinguish between physical singularities and coordinate singularities. For example, the Schwarzchild metric has a coordinate singularity at the Schwarzchild radius that may be eliminated by a change in coordinates, but I doubt this is what you meant. | |
| Feb 12, 2011 at 5:57 | answer | added | Carl Brannen | timeline score: 11 | |
| Feb 12, 2011 at 5:36 | vote | accept | Itai Bar-Natan | ||
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| Feb 12, 2011 at 5:36 | vote | accept | Itai Bar-Natan | ||
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| Feb 12, 2011 at 5:36 | vote | accept | Itai Bar-Natan | ||
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| Feb 12, 2011 at 5:36 | vote | accept | Itai Bar-Natan | ||
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| Feb 12, 2011 at 4:48 | answer | added | Rodrigo Barbosa | timeline score: 9 | |
| Feb 12, 2011 at 3:02 | history | edited | Itai Bar-Natan | CC BY-SA 2.5 |
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| Feb 12, 2011 at 1:56 | answer | added | Gordon | timeline score: 12 | |
| Feb 12, 2011 at 0:54 | history | asked | Itai Bar-Natan | CC BY-SA 2.5 |