Timeline for If a black hole was headed for our solar system and would arrive within a year, would we necessarily know of it?
Current License: CC BY-SA 4.0
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| Jul 26, 2021 at 7:02 | comment | added | PM 2Ring | Is this a normal stellar BH (so with a mass around 3 $M_\odot$ or so)? Or is it a (highly hypothetical) primordial BH? | |
| Jul 21, 2021 at 15:04 | history | edited | A. Kvåle | CC BY-SA 4.0 |
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| Jul 21, 2021 at 10:07 | comment | added | A. Kvåle | @LioElbammalf It was a bit of an arbitrary time frame, I just kind of used it as an example. What my question really is, is this; "if a black hole was headed towards us, within what time frame of its arrival would we almost certainly spot it?" | |
| Jul 21, 2021 at 9:21 | comment | added | Lio Elbammalf | @A.Kvåle I'm just trying to get an idea of where this blackhole will need to be in a year's time to have "arrived" in our solar system. | |
| Jul 20, 2021 at 17:51 | history | edited | A. Kvåle | CC BY-SA 4.0 |
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| Jul 20, 2021 at 17:21 | comment | added | A. Kvåle | @LioElbammalf Depends on what you mean by noticeable. I guess if the effect was noticeable then the black hole would probably be found quite quickly, because people all over the world would want to find out what was causing the mysterious gravitational effects. Both curiosity and fear would probably make a lot of resources be directed at finding the source of the disturbance, which makes me believe that the black hole would be spotted quite quickly. | |
| Jul 20, 2021 at 9:45 | answer | added | fraxinus | timeline score: 1 | |
| Jul 20, 2021 at 9:08 | answer | added | Arthur Westerman | timeline score: 1 | |
| Jul 20, 2021 at 9:00 | history | tweeted | twitter.com/StackAstronomy/status/1417408959120502785 | ||
| Jul 20, 2021 at 7:15 | comment | added | Lio Elbammalf | When you say the black hole would "arrive" is this the point at which the extra gravitational pull is noticable or the point at which we're within the black hole's event horizon crosses into the solar system? | |
| Jul 20, 2021 at 4:26 | history | became hot network question | |||
| Jul 19, 2021 at 23:38 | comment | added | Pierre Paquette | We would also be able to detect its gravitational effect on other Solar System bodies; their orbits would be perturbed by the black hole’s presence. | |
| Jul 19, 2021 at 22:02 | answer | added | Deschele Schilder | timeline score: 4 | |
| Jul 19, 2021 at 20:34 | comment | added | A. Kvåle | @JamesK If a black hole was travelling at that speed, within what time frame would we probably spot it? | |
| Jul 19, 2021 at 20:32 | review | First posts | |||
| Jul 20, 2021 at 15:17 | |||||
| Jul 19, 2021 at 20:32 | comment | added | James K | Might depend on how fast it was going. Typical velocities of nearby stars could be about 100km/s but black holes might be going faster... maybe 1000km/s, if they were accelerated by the supernova explosion that formed them. | |
| Jul 19, 2021 at 20:24 | history | asked | A. Kvåle | CC BY-SA 4.0 |