PHASE EVOLUTION OF THE PHOTON IN KERR SPACETIME

被引:28
作者
CARINI, P
FENG, LL
LI, M
RUFFINI, R
机构
[1] STANFORD UNIV, WW HANSEN EXPTL PHYS LAB, STANFORD, CA 94305 USA
[2] UNIV SCI & TECHNOL CHINA, CTR ASTROPHYS, HEFEI 230026, PEOPLES R CHINA
关键词
D O I
10.1103/PhysRevD.46.5407
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In this paper, we explore some aspects of the gravitational lens effects due to a Kerr black hole. Under the eikonal approximation of the Maxwell equations in curved space, the spin function of a photon in the degenerate metric is determined. Furthermore, we present an investigation of the phase factor that a photon acquires in Kerr spacetime. The resulting phase consists of two parts: a real and an imaginary one. The real part has been interpreted as contributing a rotational angle of the plane polarization for linearly polarized light, and the imaginary one results in the light intensity amplification along with the photon's trajectory in the gravitational field. Finally, we provide the so-called ''Sagnac factor'' related to the phase shift.
引用
收藏
页码:5407 / 5413
页数:7
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