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Black Hole Hawking radiation

Author:

Manjunath, R

Category:

Essays

Sub-Category:

Relativity Theory

Language:

English

Date Published:

February 18, 2020

File:

/Essays-Relativity Theory/Download/5188

Downloads:

712

Keywords:

Black hole; Hawking Radiation; Event Horizon; Quantum effects; Schwarzschild radius; black hole evaporation

Abstract:

Hawking radiation is black-body radiation that is predicted to be released by black holes − which make a black hole to glow like a piece of hot metal, due to quantum effects near the event horizon. It is named after the English theoretical cosmologist Stephen Hawking, who provided a theoretical argument for its existence in 1974. Hawking radiation − which is widely regarded as one of the first real steps toward a quantum theory of gravity and allows physicists to define the entropy of a black hole − reduces the mass and energy of black holes and is therefore also known as black hole evaporation. Because of this, black holes are not quite black! Instead, they glow slightly with photons, neutrinos, and other massive particles. They shrink and ultimately vanish. Micro black holes are predicted to be larger emitters of radiation than larger black holes and should shrink and dissipate faster.

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