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Mahesh
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- TL;DR Summary
- If light cannot escape a black hole and gravity cannot transmit information faster than light, how does gravity exerted by matter within the black hole affect matter outside the event horizon?
I was learning GR and I got to the point where I learned about worldlines and their structure within a Schwarzschild black hole, that space-time itself is curved so that all future worldlines from an event point inward. Since a massive object cannot exert gravity into its past, how does the gravity exerted by matter in the black hole affect matter outside the event horizon? (am I correct so far?)
I considered this thought experiment: consider a nearly ideal Schwarzschild black hole in which a massive but extremely light particle resides, within the event horizon. Can an extremely precise gravity probe (outside the horizon) pick up details about the particle that is within the horizon(such as position and velocity)? As far as I can tell it cannot, because of the worldlines going inward, and also that no information being able to escape a black hole, (I am not very sure about this), but if all influence that the particle has on the outside world can be detected and does not exist, how does the singularity exert gravity outside the event horizon?
Also,this is my second post,is my preview/formatting/etc correct?
I considered this thought experiment: consider a nearly ideal Schwarzschild black hole in which a massive but extremely light particle resides, within the event horizon. Can an extremely precise gravity probe (outside the horizon) pick up details about the particle that is within the horizon(such as position and velocity)? As far as I can tell it cannot, because of the worldlines going inward, and also that no information being able to escape a black hole, (I am not very sure about this), but if all influence that the particle has on the outside world can be detected and does not exist, how does the singularity exert gravity outside the event horizon?
Also,this is my second post,is my preview/formatting/etc correct?