Black Holes & Hawking Radiation: Time Paused in Gravity?

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SUMMARY

The discussion centers on the relationship between black holes, Hawking radiation, and the perception of time under extreme gravitational conditions. It establishes that Hawking radiation is a continuous process, with the evaporation of black holes leading to a state where singularities may not exist. The conversation highlights that while time appears to slow down near supermassive black holes, it does not stop; rather, it passes normally at the black hole's event horizon. The temperature of black holes influences the rate of Hawking radiation, with smaller black holes emitting radiation more rapidly than larger ones.

PREREQUISITES
  • Understanding of Hawking radiation and its implications on black hole entropy
  • Familiarity with general relativity and its effects on time perception near massive objects
  • Basic knowledge of black hole physics, including singularities and event horizons
  • Concepts of quantum mechanics as they relate to cosmology
NEXT STEPS
  • Research the mathematical formulations of Hawking radiation and its derivation
  • Explore the effects of general relativity on time dilation near black holes
  • Study the differences in Hawking radiation rates between small and large black holes
  • Investigate the implications of black hole evaporation on cosmic entropy
USEFUL FOR

Astronomers, physicists, and students of cosmology and quantum mechanics who seek to deepen their understanding of black hole dynamics and the nature of time in extreme gravitational fields.

Abishek
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In the view of Hawking radiation and entropy of black holes, the evaporation is continuous and at one point, there will be no singularity for the black hole. By relativity, if we reach a super massive black hole, then time would be relatively slowed down to a point that it stops (maybe?). Now, if there is no "time" for occurrence of Hawking radiation, then how does it actually occur? Even if it did occur, then will it not be a very slow process?

P.S: I am ready for the stabs of cruel physics professors now...
 
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The formulas are calculated for time as seen by an observer far away - for large black holes, it is a very slow process because the temperature is tiny, but for small black holes it is fast.
 
To expand just slightly on mfb's response, what he has pointed out indirectly is that LOCALLY, at the position of the black hole, time passes normally, it does not slow down much less stop.
 
It's hard to visualize...
 
Abishek said:
It's hard to visualize...
We humans have evolved in an INCREDIBLY limited range of physical phenomena so there are TONS of things in cosmology (the very large) and quantum mechanics (the very small) that we find "hard to visualize" (and a lot of it just flat hard to believe).
 

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