On Wednesday, February 22, 2017 at 3:08:07 PM UTC-5, stargene wrote:   
   > I need some help.   
   > In reviewing the Hawking radiation process on several websites, a   
   > naive question occurred to me.  I imagine the answer is no, but I   
   > must ask anyway:   
   >   
   > I imagine a huge collapsing mass -- say a neutron star, reaching its   
   > maximum possible mass, passing its tipping point, and on its way,   
   > with a fraction of a second, to becoming a black hole.  Let's pretend   
   > it has no spin.   
   >   
   > During this tiny interval of time, I can imagine its surface/boundary   
   > approaching its final surface, defined by its Schwarzschild radius   
   > r_s.  And its gravitational field potential, at some r > r_s, attaining ultra   
   > relativistic values -- say - .9999999999 c^2.  Ie: No event horizon has   
   > yet been formed, and r is roughly ~10^-7 m outward from the inevitable   
   > r_s.   
   >   
   > This immense grav'l field, at r, should display a strong Unruh effect,   
   > in an accelerating frame, -- I assume with its own spectrum of virtual   
   > particles.   
   >   
   > My naive question then is: Could one member of such a virtual pair   
   > then still become relatively isolated from its partner, if it momentarily   
   > travels toward M, feeling a much higher potential, while its partner   
   > moves slightly outward from M, into a lower potential.   
   >   
   > Could the local field potential differences, in the neighborhood of r,   
   > then mediate a non-zero chance of the latter member escaping and   
   > becoming real at infinity?   
   >   
   > Ie: A sort of proto-Hawking radiation?   
   >   
   > Or does any and all chance of some of the Unruh field of particles   
   > becoming real require the prior existence of the actual even horizon?   
   >   
   > Thanks,   
   > Gene   
      
   Hi gene -   
      
   Sabine Hossenfelder's blog always a good source for top-flight help   
   on such matters.  This post from 2015 should provide some insight(s):   
      
   http://backreaction.blogspot.com/2015/12/hawking-radiation-is-no   
   -produced-at.html   
      
   cheers,   
   mark jonathan horn   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)