Timeline for Do tidal forces on moons cause them to emit gravitational waves?
Current License: CC BY-SA 4.0
13 events
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| Apr 17, 2023 at 22:34 | comment | added | PM 2Ring | @Tim Indeed! I assumed that the reader would realise that the GW power emitted by tidal deformation would be many orders of magnitude smaller than my Sun-Earth example, but I suppose I should've said that explicitly... | |
| Apr 17, 2023 at 19:56 | comment | added | James K | Thanks Tim, I've incorporated that value into my answer, with credit, of course. | |
| Apr 17, 2023 at 19:56 | history | edited | James K | CC BY-SA 4.0 |
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| Apr 17, 2023 at 18:22 | comment | added | TimRias | If I did not make a mistake putting numbers in arxiv.org/pdf/0709.1915.pdf, the power produced in gravitational waves due to tidal deformation of the Moon is something like $10^{-18}$ Watt. | |
| Apr 17, 2023 at 17:20 | comment | added | TimRias | @PM2Ring That number refers to the GWs generated by the changing orbital quadrupole moment. The amount of GWs generated due to the changing quadrupole moment of the Earth due to tidal deformations, is many orders of magnitude smaller. | |
| Apr 12, 2023 at 14:34 | comment | added | Spratty | The phrase "The moon weighs more than a mosquito" is just begging for an xkcd-style "[citation needed]". | |
| Apr 12, 2023 at 6:38 | comment | added | LLlAMnYP | I stumbled on the second sentence of your answer. Could you kindly explain what a "spherically symmetric acceleration" is? My best guess is a spherical body, whose individual parts accelerate as $$ \mathbf{r}'' = f(r,t) \mathbf{e}_r $$, is that correct? | |
| Apr 11, 2023 at 19:41 | comment | added | Mad Physicist | @M.A.Golding. Were you reading the work of elderly but distinguished scientists? | |
| Apr 11, 2023 at 17:12 | history | edited | James K | CC BY-SA 4.0 |
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| Apr 11, 2023 at 16:58 | comment | added | M. A. Golding | @planetmaker Is James K an elderly but distinguished scientist? Does the quote apply to him. Anyway, from all that I have read, gravitational waves are very weak except for those produced by super energetic events. | |
| Apr 11, 2023 at 12:55 | comment | added | PM 2Ring | Eg, "For the Earth-Sun system, this works out to be about 196 watts of power." physics.stackexchange.com/a/412990/123208 | |
| Apr 11, 2023 at 11:38 | comment | added | planetmaker | If an elderly but distinguished scientist says that something is possible, he is almost certainly right; but if he says that it is impossible, he is very probably wrong. - Arthur C. Clarke. | |
| Apr 11, 2023 at 9:16 | history | answered | James K | CC BY-SA 4.0 |