this post was submitted on 04 Sep 2023
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Black holes keep 'burping up' stars they destroyed years earlier, and astronomers don't know why (www.livescience.com)
submitted 1 year ago by ooli@lemmy.world to c/space@lemmy.world
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[โ€“] Natanael@slrpnk.net 10 points 1 year ago

There's the hard event horizon and then there's multiple radii past it with different effects on orbits (such as the photon orbit radius, stable circular orbit radius, etc) and if you're very close you're also dealing with "weaker" horizons like a radius where most light gets redshifted past visibility even if mass can still escape if it's fast enough.

https://profoundphysics.com/black-hole-orbits/