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Astronomy

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  • $\begingroup$ You talked about non-rotating black holes, what happens with the rotating ones? And what happens after a black hole rips apart an object? Does it simply drift in space or get pulled in the black hole. $\endgroup$
    – Swapnil Rastogi
    Commented Apr 30, 2015 at 4:10
  • $\begingroup$ Rotating BHs will make things a bit more complicated but the explanations given above remain valid. Once the object is ripped apart, as you say, the same phenomena, again, apply for every individual part: stable versus non-stable orbita, tidal disruption etc. $\endgroup$
    – onekiloparsec
    Commented May 2, 2015 at 10:39
  • $\begingroup$ @SwapnilRastogi As I said in the answer, some of the stellar matter [from the star ripped apart] forms an accretion disc around the BH. This is essentially all matter that is gravitationally bound to the BH. The remainder escapes. If the star was initially on a parabolic orbit (which to good approximation is the typical situation), half of the gas from the star will accrete and the other half escape. $\endgroup$
    – Walter
    Commented May 3, 2015 at 17:25
  • $\begingroup$ Alright, that sums up my doubt, thanks for the explanation! $\endgroup$
    – Swapnil Rastogi
    Commented May 5, 2015 at 6:57