Timeline for How can black hole mergers happen if we cannot see anything fall into a black hole? [duplicate]
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
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| Nov 14 at 9:53 | comment | added | SCIENCEIUM | @John Rennie Thank you that thread answers my questions | |
| Nov 14 at 9:51 | comment | added | SCIENCEIUM | @imyaf Thanks I will edit it | |
| Oct 23 at 7:19 | comment | added | safesphere | “we cannot observe anything fall into a black hole” - This is a popular myth. The radius of a black hole (the radial distance between the horizon and the origin measured in meters) is zero, as follows directly from the Schwarzschild metric. Therefore, once objects are asymptotically at the horizon, space wise they are at the same place where the singularity happens in the future. “Crossing the horizon” is another side of this myth. Nothing crosses the horizon since its radius is already zero. Instead the area of the horizon shrinks to zero in the future while all matter stays at the horizon. | |
| S Oct 22 at 11:49 | history | closed | John Rennie black-holes Users with the black-holes badge or a synonym can single-handedly close black-holes questions as duplicates and reopen them as needed. | Duplicate of So Black Holes Actually Merge! In 1/5th of a Second - How? | |
| S Oct 22 at 11:49 | comment | added | John Rennie | This question is similar to: So Black Holes Actually Merge! In 1/5th of a Second - How?. If you believe it’s different, please edit the question, make it clear how it’s different and/or how the answers on that question are not helpful for your problem. | |
| Oct 22 at 11:03 | answer | added | gandalf61 | timeline score: 0 | |
| Oct 22 at 10:59 | comment | added | Root Groves | Basically for the same reasons we see a neutron star collapse into a black hole.Dont ask me how tho I barely remember anything from the GR class. | |
| Oct 22 at 10:55 | history | edited | Qmechanic♦ | CC BY-SA 4.0 |
edited tags; edited title
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| Oct 22 at 10:46 | comment | added | Imyaf | Excellent question! Perhaps it makes sense to slightly adjust the wording: "If, in the coordinate system of an external observer, the falling of an object into a black hole is not visible. Then how, in the same coordinate system, can the contact and merging of black holes be observed?" Also the tag "General Relativity" is recommended, as there are other theories that do not include an event horizon. | |
| S Oct 22 at 10:33 | review | First questions | |||
| Oct 22 at 11:18 | |||||
| S Oct 22 at 10:33 | history | asked | SCIENCEIUM | CC BY-SA 4.0 |