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2 votes
3 answers
422 views

Do light particles have thrust? [duplicate]

I understand that nothing is faster than light and that it can not escape a black hole. However, light particles may be fast, but perhaps it can't escape a black hole due to it's lack of thrust power? ...
ruben orosco's user avatar
0 votes
1 answer
66 views

Four-momentum of a photon emitted from an accretion disk

Consider a non-rotating compact object surrounded by a revolving accretion disk. A distant observer sees the disk in an edge-on position. The center of the disk may be taken as the origin of $r-\theta-...
Hrishi's user avatar
  • 329
1 vote
0 answers
65 views

When does a black hole acquire the momentum of entering photon?

Photons carry momenta, momentum is conserved in closed systems, so what would happen when a photon enters a black hole? Supposedly the momentum of the photon will be transferred to the new combined ...
user289661's user avatar