Hawking radiation, Physics

Assignment Help:

Hawking radiation (S.W. Hawking; 1973):

Black holes emit radiation such as any other hot body. Virtual particle-antiparticle pairs are being formed in supposedly empty space constantly. Sporadically, a pair will be formed just outside the event horizon of a black hole. There are three possibilities which are following:

a) both of the particles are captured by the hole;

b) both of the particles escape the hole;

c) one particle escapes whereas the other is captured.

The first two cases are simple; the virtual particle-antiparticle pair recombines and returns their energy back to the void by the uncertainty principle.

It is the third case which interests us. In this case, one of the particles has escaped (speeding away to infinity), whereas the other has been captured through the hole. The escapee becomes real and now can be detected through distant observers. However the captured particle is virtual still; due to this, it ought to restore conservation of energy through assigning itself a negative mass-energy. As the hole has absorbed it, the hole loses mass and therefore appears to shrink. From a distance, it seems as if the hole has emitted a particle and decrease in mass.

The rate of power emission is proportional to the inverse square of the mass of hole; therefore, the smaller a hole gets the faster & faster it emits Hawking radiation. It leads to a runaway procedure; what happens while the hole gets extremely small is unclear; quantum theory appears to indicate that some sort of "remnant" might be left behind after the hole has emitted away all its mass-energy.


Related Discussions:- Hawking radiation

Evaluate the radius of the planet, Instructors Own Problem: 1) On the su...

Instructors Own Problem: 1) On the surface of some strange planet, Mr. Spock finds his weight to be1200N. He then goes 5000km above the surface, and finds his weight to be on

What are non-mechanical waves , The waves which do not needs medium for the...

The waves which do not needs medium for their propagation are known as non- mechanical or electromagnetic waves. Examples : Light, heat (Infrared), radio waves, gamma- rays, X-r

Inductors, Inductors: Coils which are used for their opposition to curr...

Inductors: Coils which are used for their opposition to current change in a circuit are known as inductors or chokes. CONSTRUCTION Inductors with an air core have small

Adding 2 vectors, Adding 2 Vectors An easy demonstration of adding 2 ve...

Adding 2 Vectors An easy demonstration of adding 2 vectors graphically. Also demonstrates in which vector addition is commutative.

., What is plane diffraction grating? How the wavelength of sodium light is...

What is plane diffraction grating? How the wavelength of sodium light is measured?question #Minimum 100 words accepted#

Mechanics, to derive expreation for magnitude & direction for the resultant...

to derive expreation for magnitude & direction for the resultant which two are acting at a point

#biot''s polariscope., Ask question #whether s component or p component pre...

Ask question #whether s component or p component present in the reflected light of Biot''s polariscope# Minimum 100 words accepted#

Why, why sky is blue

why sky is blue

Can you explain normal mode oscillation, Can you explain normal mode oscill...

Can you explain normal mode oscillation? Compare between Q 1 and Q 2 mode oscillation

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd