Tortoise coordinate and Hawking effect in a dynamical Kerr black hole

Details Tortoise coordinate and Hawking effect in a dynamical Kerr black hole Tortoise coordinate and Hawking effect in a dynamical Kerr black hole

2010-03-04

arxiv.org/abs/1003.0983v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages

Scientific paper

Hawking effect from a dynamical Kerr black hole is investigated using the improved Damour-Ruffini method with a new tortoise coordinate transformation. Hawking temperature of the black hole can be obtained point by point at the event horizon. It is found that Hawking temperatures of different points on the surface are different. Moreover, the temperature does not turn to zero while the dynamical black hole turns to an extreme one.

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