The discussion centers on the phenomenon of time dilation in the context of black hole collisions. It establishes that as objects approach a black hole, time appears to slow down from our perspective, making it seem as though nothing crosses the event horizon. However, this effect is primarily applicable to objects with negligible mass compared to the black hole. For massive objects or multiple smaller masses, this assumption does not hold, allowing for observable black hole collisions. The conversation highlights the importance of synchronization conventions in understanding these events.
PREREQUISITESAstronomers, physicists, and students interested in astrophysics, particularly those studying black hole dynamics and relativistic effects.
This is only true for an object with negligible mass, compared to the black hole mass, so the black hole horizon can be assumed to be static. For massive objects or lots of small masses falling in at the same time, the above assumption doesn't hold anymore.imsmooth said:When something approaches black hole time dilation slows the event down from our frame of reference such that nothing seems to cross the event horizon.
More precisely, using one particular standard of synchronization, there is never a time over here which is judged to be simultaneous with a horizon crossing event over there.imsmooth said:from our frame of reference such that nothing seems to cross the event horizon