I  Hawking Radiation: Can Particles Appear with Relativistic Velocities?

Mike Holland
Messages
114
Reaction score
1
The Hawking radiation comes from a pair of complementary particles, an electron and a positron for example, coming into existence spontaneously near the event horizon as a result of the intense gravitational field. One particle gets captured by the Black Hole while the other escapes, taking a bit of the BH mass with it. The mass of the two particles is "borrowed" from the BH.

My problem is that in order to escape. that particle must come into existence already moving radially outwards at close to the velocity of light, otherwise it cannot overcome the gravity. Do these particles really pop into existence with relativistic velocities?
 
Physics news on Phys.org
Well, your first paragraph is not true: it is a story to help make sense of the mathematics. So asking about the details is kind of pointless.
 
  • Like
Likes berkeman
Is it pointless to suggest that to escape from near the event horizon one has to have a velocity close to c?
 
I looked at your past posts. You've spent years tossing these random what-ifs at us. In that time, you could have learned GR.

And yes, what you write is pointless. Meaningless, actually. Virtual particles do not have speeds. Further, you missed an important point I wrote: your first paragraph is not true: it is a story to help make sense of the mathematics. Asking us to flesh out the details of something that is not true wastes everybody's time.
 
  • Like
Likes PeroK, berkeman and Dale
Vanadium 50 said:
Asking us to flesh out the details of something that is not true wastes everybody's time.
Agreed; thread is closed. The OP's profile page says that he has a BS in Physics, so he should be able to do a bit more reading to figure this out. Maybe he'll do that reading and start a new thread with some current journal references if he still is having issues understanding the math behind Hawking radiation. :wink:
 
Last edited:
  • Like
Likes PeroK
In this video I can see a person walking around lines of curvature on a sphere with an arrow strapped to his waist. His task is to keep the arrow pointed in the same direction How does he do this ? Does he use a reference point like the stars? (that only move very slowly) If that is how he keeps the arrow pointing in the same direction, is that equivalent to saying that he orients the arrow wrt the 3d space that the sphere is embedded in? So ,although one refers to intrinsic curvature...
ASSUMPTIONS 1. Two identical clocks A and B in the same inertial frame are stationary relative to each other a fixed distance L apart. Time passes at the same rate for both. 2. Both clocks are able to send/receive light signals and to write/read the send/receive times into signals. 3. The speed of light is anisotropic. METHOD 1. At time t[A1] and time t[B1], clock A sends a light signal to clock B. The clock B time is unknown to A. 2. Clock B receives the signal from A at time t[B2] and...
So, to calculate a proper time of a worldline in SR using an inertial frame is quite easy. But I struggled a bit using a "rotating frame metric" and now I'm not sure whether I'll do it right. Couls someone point me in the right direction? "What have you tried?" Well, trying to help truly absolute layppl with some variation of a "Circular Twin Paradox" not using an inertial frame of reference for whatevere reason. I thought it would be a bit of a challenge so I made a derivation or...

Similar threads

Back
Top