Open AccessHawking radiation of dynamical Kinnersley black hole under the new tortoise coordinate transformation
Author(s) -
Pan Wei-zhen,
Xuejun Yang,
Luo Jin-Cai
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.109701
Subject(s) - coordinate system , tortoise , hawking , black hole (networking) , physics , hawking radiation , transformation (genetics) , event horizon , surface (topology) , classical mechanics , horizon , quantum mechanics , event (particle physics) , geometry , mathematics , computer science , computer network , routing protocol , biochemistry , routing (electronic design automation) , gene , biology , link state routing protocol , paleontology , chemistry , astronomy
With two new tortoise coordinate transformations, Hawking effect from a dynamical Kinnersley black hole is investigated by using the improved Damour-Ruffini method. After the tortoise coordinate transformation, the Klein-Gordon equation can be written in the standard form at the event horizon. Then extending the outgoing wave from outside to inside of the horizon analytically, the surface gravity and the Hawking temperature can be obtained automatically. It is found that Hawking temperature of different points on the surface are different. There is a problem of dimension in the usual tortoise coordinate and the results are different from those of the same black hole by using two different tortoise coordinate transformations. The results obtained by using two new tortoise coordinate transformations are still different.