用新乌龟坐标变换研究动态Kerr黑洞的Hawking辐射  

Hawking radiation in a dynamical Kerr black hole using a new tortoise coordinate

作　　者：谢志堃[1] 

机构地区：[1]绍兴文理学院物理与电子信息系,绍兴312000

出　　处：《物理学报》2011年第9期116-121,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10873003;11045005);浙江省自然科学基金(批准号:Y6090739)资助的课题~~

摘　　要：本文用一种新的乌龟坐标变换和改进的Damour-Ruffini方法研究了动态Kerr黑洞的Hawking辐射,得到了随时间和纬度角而变化的局域温度和具有准黑体谱形式的Hawking辐射谱.其结果与采用通常的乌龟坐标变换所得结果有所不同,而通常的乌龟坐标变换在量纲上存在一定的问题,本文的结果也许更为合理.Hawking radiation from a dynamical Kerr black hole is investigated using a new tortoise coordinate and the improved Damour-Ruffini method. The local temperature changing with time and latitude angle and the Hawking radiation with quasi-blackbody spectrum are obtained. The present results are different from the existing results obtained by using usual tortoise coordinate. There exists a certain problem in dimension for the usual tortoise coordinate and the present results may be more reasonable.

关 键 词：HAWKING辐射 动态Kerr黑洞 改进的Damour-Ruffini方法 新乌龟坐标变换 

分 类 号：P145.8[天文地球—天体物理]