>>50884272It is another option, although I do feel like with the black hole specifically, since this is a phenomenon that can onlty be achieved near a black hole, the space-time bending nature of the black hole has a lot to do with this, namely through frame-dragging.
Frame-dragging, from what ive read, causes a photon that passes a massive spinning object in the same direction as the spin to move past the object faster than a photon that moves against the direction of the spin. This is due to the spin of the massive object quite literally dragging space with it, and this is also how you get the "a section of space where the gravity of the black hole drags spacetime around itself faster than the speed of light" line from the document. Here, space itself is being moved, so from an outsider perspective light that is moving towards the direction where space is being dragged is moving faster than light, but inside the ergosphere a person would detect light moving at the usual 3e+8 m/s.
So in the case of photons in the geostationary orbits, it would be an example of a photon traveling at the edge of the ergosphere against the direction of the black hole's spin. Although in this example, at least in my undertanding, the photon would be stationary in the reference frame of someone looking from the outside, while in the black hole's reference frame (which, mind you, is spinning), the photon is orbiting the black hole.
Which would mean that in my earlier post,
>>50879275 here, I would have been wrong.
Im not at all an expert in this so i might be wrong with a lot of these things. Im the type of student who struggles with basic thermodynamics and electromagnetism, so general relativity is a bit out of my depth, but i do like discussing it.
