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How Much Mass Energy Does a Black Hole Re-Radiate?

  1. Sep 23, 2013 #1
    Given a massive object that has entered a BH's accretion disk, what percentage of its mass is typically re-radiated away as i) accretion disk radiation and ii) polar jet radiation/particle streams before ever getting to the event horizon?

    How much does a black hole *not* consume of its 'captive' prey?


    IH
     
  2. jcsd
  3. Sep 23, 2013 #2
    In case an expert with an answer does not appear, here is a paper I found when I was looking for similar information....I did not find an answer:

    BH accretion disk theory
    http://arxiv.org/pdf/1104.5499v3.pdf



    pg44:
     
  4. Sep 23, 2013 #3

    Thanx Naty, so the short answer is "we really don't know...", pity...


    IH
     
  5. Sep 23, 2013 #4

    Drakkith

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    Staff: Mentor

    Perhaps. I'd wait and see if someone else can answer your question before concluding we don't know.
     
  6. Sep 23, 2013 #5

    Yes, I was foolish to say that; really hope that someone out there has some information on this.


    IH
     
  7. Sep 24, 2013 #6
    If there is no authoritative answer, is there at least an order-of-magnitude estimate? Would accretion disks and relativistic jets radiate 1%, 10% or 50% or 0.001% of impinging matter? Or perhaps that is also asking too much...


    IH
     
  8. Sep 24, 2013 #7

    Drakkith

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    From wiki:http://en.wikipedia.org/wiki/Accretion_disk

    Not sure what it would be for a regular black hole.
     
  9. Sep 24, 2013 #8
    That process is external to the BH horizon.
     
  10. Sep 24, 2013 #9

    Thanx for that reference; should have thought of it myself...so say 10% for the accretion disk radiation, perhaps a like proportion for the relativistic jet too?


    IH
     
  11. Sep 24, 2013 #10

    Drakkith

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    Of course it is. Did something I say suggest otherwise?
     
  12. Sep 24, 2013 #11

    Drakkith

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    Staff: Mentor

    Don't know. Maybe it's already taken into account in the 10%?
     
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