Timeline for How to tell a blackhole from a neutron star covered entirely by Dyson sphere painted in vantablack?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 1, 2020 at 14:54 | comment | added | David Tonhofer | Addendum: Neutron Star surface has been mapped now (well, the surface has been reconstructed/recomputed from the X-ray emissions): youtube.com/watch?v=zukBXehGHas | |
| Jan 1, 2020 at 11:52 | comment | added | Ink blot | We study the wind by looking at the movement of the trees. | |
| Dec 31, 2019 at 18:53 | comment | added | Perkins | @jamesqf Don't really need handwavium, just a magnetic field strong enough to bend that particle jet and spread it across a bigger surface so you can absorb its energy to power your field. The generator necessary to bootstrap this process would be impressive though... | |
| Dec 31, 2019 at 1:52 | comment | added | jamesqf | @John Dvorak: Dyson sphere is a closed surface (by definition) which needs to be made of solid matter. So unless you know the way to the secret handwavium mines, where exactly are you going to find something that can withstand being hit by a relativistic particle jet. Your Dyson sphere immediately becomes a ring. Then, unless you have a really old, cool neutron star, its temperature is around a million K, so it's radiating in X-rays. Then there's the magnetic field... | |
| Dec 30, 2019 at 23:20 | vote | accept | user6760 | ||
| Dec 30, 2019 at 20:15 | comment | added | John Dvorak | @jamesqf depends. Pulsars are a powerful source of energy and they distribute it evenly along a pair of circles. Now, you need to feel comfortable powering your laptop from thunderstorms before even thinking of making any use of this beast,. but hey... Kardashev 3 is Kardashev 3 | |
| Dec 30, 2019 at 17:46 | comment | added | jamesqf | Actually we do see at least some neutron stars, for instance pulsars: en.wikipedia.org/wiki/Pulsar Though of course a Dyson sphere around an active pulsar rather boggles the mind :-) | |
| Dec 30, 2019 at 8:30 | history | answered | Mike Scott | CC BY-SA 4.0 |