Light paths of normal and phantom Einstein-Maxwell-dilaton black holes
Light paths of normal and phantom Einstein-Maxwell-dilaton black holes
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DOI：
10.1103/physrevd.87.024012
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发表时间：
2012-09
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影响因子：
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通讯作者：
M. Azreg-Ainou
中科院分区：
文献类型：
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作者：
M. Azreg-Ainou
本文用Weierstrass椭圆函数解析地确定了正常Einstein-Maxwell-dilaton黑洞和幻影Einstein-Maxwell-dilaton黑洞的双测地线。除质量外的黑洞参数以适当的符号输入到允许识别物质性质（幻影或正常）的碰撞参数倒数中的二阶偏转角公式中。通过时间延迟公式和相对论图像的观察也可以进行这种识别。散射经验可能有利于爱因斯坦-反麦克斯韦-爱因斯坦理论的黑洞，因为它们与史瓦西瓦尔值有很高的相对差异。对于我们限定的情形，幻影黑洞的特征是不存在多世界和两世界零测地线。PACS编号：04.20.Gz、04.50.Gh、04.70.-s、04.70.Bw、98.62.Sb、04.20。DW
Null geodesics of normal and phantom Einstein-Maxwell-dil aton black holes are determined analytically by the Weierstrass elliptic functions. The blac k hole parameters other than the mass enter, with the appropriate signs, the formula for the angle of defle ction to the second order in the inverse of the impact parameter allowing for the identification of th e nature of matter (phantom or normal). Such identification is also possible via the time delay formu la and observation of relativistic images. Scattering experiences may favor black holes of Einstein-a nti-Maxwell-dilatonic theory for their high relative discrepancy with respect to the Schwarzschild val ue. For the cases we restrict ourselves to, phantom black holes are characterized by the absence of many -world and two-world null geodesics. PACS numbers:04.20.Gz, 04.50.Gh, 04.70.–s, 04.70.Bw, 98.62.Sb, 04.20. Dw