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Black hole why not black ball?

  1. Aug 19, 2009 #1
    if a star collapses in its all sides simultaneously, why it become a flat disk later? (as if it crunches to the equator)


    and also, if some can say if there are not solar system but planet system? possible massive planet in the center of planets revolving?

    thank you
     
  2. jcsd
  3. Aug 19, 2009 #2

    tiny-tim

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    Hi meni ohana! :smile:
    It doesn't …

    it collapses spherically symmetrically, to a point singularity.

    If it is rotating, then the point singularity is a ring instead of a point, but it is never a disc. :wink:
     
  4. Aug 19, 2009 #3
    so what about the energy burst jet, it is not revolving, and it is supposed to come out of the center of that ring, but at the center there is nothing, is it make sense?
    thanks
     
  5. Aug 19, 2009 #4

    tiny-tim

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    No, it doesn't get anywhere near the centre, it comes from well outside an ordinary surface or an ordinary event horizon. :smile:
     
  6. Aug 19, 2009 #5
    so ill go abit harder :) why the event horizon is disk and not ball-shaped (even though the rotation of the singularity is flat)? or maybe it is....
     
  7. Aug 19, 2009 #6

    tiny-tim

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    No, the event horizon is always a sphere (ball-shaped).
     
  8. Aug 19, 2009 #7
    thanks, good to know all this
     
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