Timeline for How do two black holes merge?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Jan 10, 2023 at 15:49 | comment | added | Michael | I guess there is a disconnect between the external behavior in which the two black holes appear to reach a steady state quite fast, and inside the event horizon, where everything is so time dilated that it's hard to see how anything can be moving very fast relative to the outside the event horizon (i know you can't see it, but the math still says that, right?) | |
| Jan 10, 2023 at 15:46 | comment | added | Michael | @JamesK I guess my "experience the merger" was more along the lines of "which singularity will you reach" i.e. since time is passing more slowly for you, will the singularities combine before you reach one of them and if not is it possible to reach the "new" singularity. I suppose though that even if the merging singularity is approaching the original one such that you are right in between you'll still reach the original one first? | |
| Jan 9, 2023 at 17:51 | comment | added | James K | On the contrary, In the GR model, reaching the singularity is certain and unavoidable. Quantum gravity may have something to say about that, but if it does, it is on a very small scale. | |
| Jan 9, 2023 at 10:29 | comment | added | OrangeDog | @Michael there's no guarantee that you'll ever reach a singularity (either the two original or a possible merged one), only that you will never leave the region inside the (dynamic) event horizon. | |
| Jan 8, 2023 at 18:05 | comment | added | James K | Not sure what you mean by "experience the merger". But the event horizon will be in your past, you won't be able "experience" the event horizon after you fall in. I think it is an interesting question that if you fell in black hole A, some light fell in black hole B, then A and B merged, could the light reach you. (but it a new question and I won't try to answer it here, not least because I don't know.) And you won't see a "singularity" because the singularity is always in your future. | |
| Jan 8, 2023 at 16:41 | comment | added | Michael | Suppose you were falling into the black hole some time before the merger occurred... would your remnants experience the merger before they reached the singularity? | |
| Jan 7, 2023 at 4:09 | vote | accept | Shounak Das | ||
| Jan 7, 2023 at 13:01 | |||||
| Jan 6, 2023 at 20:32 | history | answered | James K | CC BY-SA 4.0 |