Timeline for Do planets orbiting stars emit gravitational waves?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Mar 26, 2020 at 13:21 | comment | added | Peter - Reinstate Monica | @Cloud A human being on an otherwise perfectly spherical, rotating planet would emit gravitational waves much like an asymmetrical black hole, just less. Over time, that would slow the planet down. Don't you feel the braking force already? Anyway, get a coffee while you are waiting. | |
| Mar 25, 2020 at 13:34 | comment | added | HDE 226868 | @Cloud Matter with a time-varying quadrupole moment will radiate gravitational waves. | |
| Mar 25, 2020 at 12:18 | comment | added | Cloud | SO does every piece of matter emit a wave? Like a human being? | |
| Mar 25, 2020 at 7:29 | comment | added | Peter - Reinstate Monica | I realize that the 2.5 factor for the Roche limit is dependent on the satellite's density, so for a dense planet like Earth it's much less (<1). | |
| Mar 25, 2020 at 7:19 | comment | added | Peter - Reinstate Monica | Looks like such a planet would be close to its Roche limit, around ~2.5 times the star's radius: Radius of the Sun is 7E8 m, Roche limit then 1.75E9 m. One AU is 1.5E11 m, so that 0.01 AU = 1.5E9. (It's possible I got some number wrong, of course, but it looks ok to me ...). This is somewhat interesting because it limits the properties of objects in orbits small enough to produce detectable GW: Very dense. "Normal" stars would disintegrate too early. | |
| Mar 24, 2020 at 13:06 | history | edited | HDE 226868 | CC BY-SA 4.0 |
Miscellaneous additions.
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| Mar 24, 2020 at 9:25 | history | edited | TimRias | CC BY-SA 4.0 |
LISA not eLISA
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| Mar 24, 2020 at 1:53 | history | answered | HDE 226868 | CC BY-SA 4.0 |