How is Hawking Radiation Related to a Black Hole's Mass and Time of Dissipation?

Click For Summary

Discussion Overview

The discussion focuses on the relationship between Hawking radiation and a black hole's mass, specifically exploring how these factors influence the time it takes for a black hole to dissipate. The context includes theoretical considerations and calculations related to black holes, particularly in light of concerns about potential black holes created at the LHC.

Discussion Character

  • Exploratory, Technical explanation, Mathematical reasoning

Main Points Raised

  • One participant inquires about the relationship between the amount of Hawking radiation emitted by a black hole and its mass or Schwarzschild radius, seeking a formula for this relationship.
  • Another participant provides a formula related to Hawking radiation, suggesting that the time for a black hole to dissipate can be expressed as t = m^3 / (3K), where K is a constant.
  • The value of K is specified as 3.98 x 10^15, but its derivation or implications are not discussed in detail.

Areas of Agreement / Disagreement

The discussion does not present a consensus on the relationship between Hawking radiation and black hole mass, as participants have not fully explored or validated the proposed formula.

Contextual Notes

The discussion lacks detailed derivations of the formula provided and does not clarify the assumptions or conditions under which it applies. There is also no exploration of the implications of the LHC black holes mentioned.

Synchrotron
Messages
13
Reaction score
0
How exactly is the amount of Hawking radiation emitted by a black hole related to it's mass/Schwarzschild radius/etc? Is there a formula relating the two for instance?

(I'm trying to calculate the time it would take for one of the LHC black holes that will supposedly destroy the Earth - ad nauseum - to dissipate...)

Thanks
Sync.
 
Space news on Phys.org
Perfect! Thanks for replying so promptly!
 
there's a formula derived from hawking radiation

t=m^3/3K

k=3.98 x 10^15
 

Similar threads

  • · Replies 13 ·
Replies
13
Views
6K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 24 ·
Replies
24
Views
3K
  • · Replies 14 ·
Replies
14
Views
4K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 14 ·
Replies
14
Views
4K
  • · Replies 15 ·
Replies
15
Views
4K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 9 ·
Replies
9
Views
3K