What is HAWKING RADIATION and can it escape from Black Hole?
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quantum field theory in curved spacetime predicts that event horizons emitHawking radiation, with the same spectrum as a black body of a temperature inversely proportional to its mass. This temperature is on the order of billionths of a kelvin for black holes of stellar mass, making it essentially impossible to observe.
Hawking radiation is blackbody radiation that is predicted to be released by black holes, due to quantum effects near the event horizon. It is named after the physicist Stephen Hawking, who provided a theoretical argument for its existence in 1974, and sometimes also after Jacob Bekenstein, who predicted that black holes should have a finite, non-zero temperature and entropy.
according to the quantum mechanical uncertainty principle, rotating black holes should create and emit particles. Hawking radiation reduces the mass and energy of black holes and is therefore also known as black hole evaporation.
Hawking radiation is required by the Unruh effectand the equivalence principle applied to black hole horizons. Close to the event horizon of a black hole, a local observer must accelerate to keep from falling in. An accelerating observer sees a thermal bath of particles that pop out of the local acceleration horizon, turn around, and free-fall back in. The condition of local thermal equilibrium implies that the consistent extension of this local thermal bath has a finite temperature at infinity, which says that some of these particles emitted by the horizon are not absorbed and become Hawking radiation as world is full of virtual particles
Hawking radiation is blackbody radiation that is predicted to be released by black holes, due to quantum effects near the event horizon. It is named after the physicist Stephen Hawking, who provided a theoretical argument for its existence in 1974, and sometimes also after Jacob Bekenstein, who predicted that black holes should have a finite, non-zero temperature and entropy.
according to the quantum mechanical uncertainty principle, rotating black holes should create and emit particles. Hawking radiation reduces the mass and energy of black holes and is therefore also known as black hole evaporation.
Hawking radiation is required by the Unruh effectand the equivalence principle applied to black hole horizons. Close to the event horizon of a black hole, a local observer must accelerate to keep from falling in. An accelerating observer sees a thermal bath of particles that pop out of the local acceleration horizon, turn around, and free-fall back in. The condition of local thermal equilibrium implies that the consistent extension of this local thermal bath has a finite temperature at infinity, which says that some of these particles emitted by the horizon are not absorbed and become Hawking radiation as world is full of virtual particles
kumargaurav1:
i think this answer is excellent
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the world is filled with virtual particles . virtual particles consist of particles and anti particles that come into existence out of nowhere and then annihilate into each other leaving energy (they disappear again) . this happens every where and Everytime in the universe and is happening right now.
but when this phenomenon happens at the edge of a black hole , one of the participants of the phenomena (particle or anti particle) gets sucked into the black hole due to its massive gravitational pull , leaving behind the other and the energy these particles took in debt from universe to come in existence , the debt remains unpaid so the black hole transfers some of its energy to satisfy the debt the particle of anti particle has to fulfill . in this way , black hole looses energy , and after a while ,in fact , a very long while the black evaporates or dies. this phenomenon is called HAWKING RADIATION
the energy the black hole gives escapes it pull as the particle or anti particle just remains there finding someone to bond or annihilate with . so the energy given by black hole is instantly used up by the particle or anti particle to annihilate
hope this helps
but when this phenomenon happens at the edge of a black hole , one of the participants of the phenomena (particle or anti particle) gets sucked into the black hole due to its massive gravitational pull , leaving behind the other and the energy these particles took in debt from universe to come in existence , the debt remains unpaid so the black hole transfers some of its energy to satisfy the debt the particle of anti particle has to fulfill . in this way , black hole looses energy , and after a while ,in fact , a very long while the black evaporates or dies. this phenomenon is called HAWKING RADIATION
the energy the black hole gives escapes it pull as the particle or anti particle just remains there finding someone to bond or annihilate with . so the energy given by black hole is instantly used up by the particle or anti particle to annihilate
hope this helps
nice one
thnx
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