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Thread: Stephen Hawking Particle escape from Black Holes.?

  1. #1 Stephen Hawking Particle escape from Black Holes.? 
    SEEKER Genesis's Avatar
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    After Reading an article by Prof Steven Hawking (into a black hole). About particles escapeing the pull from a black hole. It got me wondering
    What Type of particle could do this, and what would we be looking at if we could find one, Also if it fell into a black hole what changed it
    to enable its escape, Also what would hapen to it when it returns to the Vacuum of space?. Any Ideas


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    Brassica oleracea Strange's Avatar
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    If this is his Hawking Radiation stuff, then it can be any sort of particle. This is normally described as virtual particle-antiparticle pairs being formed, with one falling into the even horizon and one escaping. This is equivalent to the black hole losing the mass-energy of one particle.

    If this is his latest idea about the non-existence of event horizons then, as far as I understand it, any particle can escape but in a random and unpredictable way. It is as if the event horizon is no longer smooth but a random constantly changing thing that lets random particles escape. The end result is equivalent to Hawking Radiation, but with a different underlying mechanism.

    As far as I know he has published no maths for this yet and nothing has been peer reviewed. So, for the time being, it belongs in the box marked "Speculation (by a really smart guy)".


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    Forum Ph.D.
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    One description of Hawking radiation is based on the uncertainty principle. Specifically, the event horizon is a little fuzzy, so virtual particle pairs forming there can result in one falling in and the other escaping.
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    Forum Cosmic Wizard
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    My understanding of it was a little bit different. I thought the particle pair didn't need to actually be at the event horizon if one particle headed into it and the other headed away from it.
    I only read his books and not his papers on it though, so I might have missed something.
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    Forum Professor Daecon's Avatar
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    Could quantum tunneling have any influence on this? Could a particle tunnel out past the event horizon of a Black Hole?
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  7. #6  
    Moderator Moderator Markus Hanke's Avatar
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    Quote Originally Posted by Daecon View Post
    Could quantum tunneling have any influence on this? Could a particle tunnel out past the event horizon of a Black Hole?
    Yes, this should be possible in principle, but I don't know whether the maths work out or not. One of the main issues here is that the metric coefficients of the time and radial coordinates change signs below the event horizon, so I don't know what effect that has on the tunnelling probability.
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    SEEKER Genesis's Avatar
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    So if was Possible. How much energy would a particle have to take on to tunnnel out from a black hole and could this be difined as Anti Gravity particle, that would be interesting
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    Brassica oleracea Strange's Avatar
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    Quote Originally Posted by Genesis View Post
    So if was Possible. How much energy would a particle have to take on to tunnnel out from a black hole
    I don't know about tunnelling, but Hawking radiation has a black body radiation which means, I think, there is no minimum energy.

    and could this be difined as Anti Gravity particle
    No. Gravity still applies as usual.
    Without wishing to overstate my case, everything in the observable universe definitely has its origins in Northamptonshire -- Alan Moore
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  10. #9  
    Forum Sophomore Estheria Quintessimo's Avatar
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    I see it at layman.

    Have atom at event horrizon.
    Event horizon is destroying the atom.

    Some parts of atom are inwards vectored the event horizon,...
    some parts of the atom are outwards vectored the event horizon...

    What goes in, never comes out ever again.
    What goes out,.... Hawkings Radiation.

    That is how I understood it.
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