Abstract By introducing a new tortoise coordinate transformation, we investigate the quantum thermal and non-thermal radiations of a non-stationary Kerr--Newman--de Sitter black hole. The accurate location and radiate temperature of the event horizon as well as the maximum energy of the non-thermal radiation are derived. It is shown that the radiate temperature and the maximum energy are related to not only the evaporation rate, but also the shape of the event horizon, moreover the maximum energy depends on the electromagnetic potential. Finally, we use the results to reduce the non-stationary Kerr--Newman black hole, the non-stationary Kerr black hole, the stationary Kerr--Newman--de Sitter black hole, and the static Schwarzshild black hole.
Received: 20 January 2005
Revised: 16 May 2005
Accepted manuscript online:
PACS:
04.70.Dy
(Quantum aspects of black holes, evaporation, thermodynamics)
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10347008).
Cite this article:
Jiang Qing-Quan (蒋青权), Yang Shu-Zheng (杨树政), Li Hui-Ling (李慧玲) Quantum radiation of non-stationary Kerr－Newman－de Sitter black hole 2005 Chinese Physics 14 1736
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