
#1
Feb413, 09:46 PM

P: 126

Hi,
I recently came across this formula: [itex] T = \frac{\hbar c^3}{8 \pi GK_BM}[/itex] As I understand it deals with the radiation that is believed to be emitted by a black hole. Does it describe the temperature of the radiation? Thanks 



#2
Feb413, 10:28 PM

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PF Gold
P: 10,992

It describes the statistics of the radiation coming from close to the event horizon of a blackhole due to the large gravity gradient there.
"Temperature" is a common way of describing such statistics  the model says that the radiation coming from the black hole follows a blackbody spectrum with a characteristic temperature given by that equation. 



#3
Feb413, 10:41 PM

P: 126

Thanks.
One more question I have regarding this equation is: how can we quantify the mass of a black hole (M)? Is it the mass of the singularity? 


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