4 ms·
When I first saw the photo with very little explanation attached, I took the ring of light around it to be the accretion disc and found it suspicious that it wo
by Causality1 7y ago
When I first saw the photo with very little explanation attached, I took the ring of light around it to be the accretion disc and found it suspicious that it would be so perfectly perpendicular to earth.
- empath75 7y agoEven if it was the accretion disk, it would look that way no matter how it was facing earth because gravity would bend the light from the far side around.
- subroutine 7y agoDoes the accretion disk emit light, or is the light source coming from somewhere else? (i.e. if the accretion disk is just cosmic dust why would one expect to see the disk?)
- michaelcampbell 7y agoTo all viewers from any viewpoint relative to it? That's the bit I don't understand.
- PaulHoule 7y agoIt might look a bit different if you are looking right down the jet that comes from the pole.
- klodolph 7y agoRemember the black hole from interstellar? Some gravitational simulations were used for the imagery. It was changed for artistic purposes, but you can see the back side of the accretion disc from the front.
- AlbertoGP 7y agoThey explain how they did it in this video: https://www.youtube.com/watch?v=MfGfZwQ_qaY https://www.youtube.com/watch?v=MfGfZwQ_qaY Their advisor, who provided them the relativistic equations they use for the computer graphics simulation is Kip Thorne: https://en.wikipedia.org/wiki/Kip_Thorne https://en.wikipedia.org/wiki/Kip_Thorne
- jvzr 7y agoHe wrote a (good) book about the whole endeavor: The Science of Interstellar
- kaslai 7y agoDerek explains the physics in a reasonably understandable manner in this video on his Youtube channel: https://www.youtube.com/watch?v=zUyH3XhpLTo https://www.youtube.com/watch?v=zUyH3XhpLTo
- wruza 7y agoSo, at 6:38 he says that we would mostly see just a disk, if viewing strictly from the jet vector, yet PaulHoule’s comment fades below and the original empath75’s is intact. For now I assume there is some relativistic effect in action which makes me see them this way.
- michaelcampbell 7y agoI've watched it, but his explanation (which is the best I've seen; don't misread me), basically goes into why it looks "thus" when viewed edge-on of the accretion disk. But there are as few like that as there are viewed from the poles; so why do they ALL look like this? If that's just the way it is I'll accept it, but I haven't heard or seen a good explanation yet.