Hawking radiation and thermodynamics of a Vaidya-Bonner black hole  

作　　者：Zhen-Feng Niu Wen-Biao Liu 

机构地区：[1]Department of Physics, Hebei North University, Zhangjiakou 075000, China [2]Department of Physics, Institute of Theoretical Physics, Beijing Normal University, Beijing 100875, China

出　　处：《Research in Astronomy and Astrophysics》2010年第1期33-38,共6页天文和天体物理学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 10773002 and 10875012);the National Basic Research Program of China (Grant No. 2003CB716302);supported by the Zhangjiakou Science and Technology Bureau (Grant No. 0701014B);Hebei North University (Grant No. 2007005)

摘　　要：Using Parikh＇s tunneling method, the Hawking radiation on the apparent horizon of a Vaidya-Bonner black hole is calculated. When the back-reaction of particles is neglected, the thermal spectrum can be precisely obtained. Then, the black hole thermodynamics can be calculated successfully on the apparent horizon. When a relativistic perturbation is applied to the apparent horizon, a similar calculation can also lead to a purely thermal spectrum. The first law of thermodynamics can also be derived successfully at the new supersurface near the apparent horizon. When the event horizon is thought of as a deviation from the apparent horizon, the expressions of the characteristic position and temperature are consistent with the previous viewpoint which asserts that the thermodynamics should be based on the event horizon. It is concluded that the thermodynamics should be constructed exactly on the apparent horizon while the event horizon thermodynamics is just one of the perturbations near the apparent horizon.Using Parikh＇s tunneling method, the Hawking radiation on the apparent horizon of a Vaidya-Bonner black hole is calculated. When the back-reaction of particles is neglected, the thermal spectrum can be precisely obtained. Then, the black hole thermodynamics can be calculated successfully on the apparent horizon. When a relativistic perturbation is applied to the apparent horizon, a similar calculation can also lead to a purely thermal spectrum. The first law of thermodynamics can also be derived successfully at the new supersurface near the apparent horizon. When the event horizon is thought of as a deviation from the apparent horizon, the expressions of the characteristic position and temperature are consistent with the previous viewpoint which asserts that the thermodynamics should be based on the event horizon. It is concluded that the thermodynamics should be constructed exactly on the apparent horizon while the event horizon thermodynamics is just one of the perturbations near the apparent horizon.

关 键 词：black hole physics -- relativity -- kinematics and dynamics 

分 类 号：P145.8[天文地球—天体物理] O414.1[天文地球—天文学]