Fermat's principle in constant gravitational field

被引：0
|
作者：
Gonera, Joanna [1 ]
Kosinski, Piotr [1 ]
Piwnik, Joanna [1 ]
机构：
[1] Univ Lodz, Fac Phys & Appl Informat, Pomorska 149-153, PL-90236 Lodz, Poland
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2021年 / 30卷 / 12期
关键词：
Geometric optics; Fermat principle; Kerr black hole;
D O I：
10.1142/S0218271821500942
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Recently (Int. J. Mod. Phys. D 27 (2018) 1847025) an interesting property of closed light rings in Kerr black holes has been noticed. We explain its origin and derive a slightly more general result.
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页数：3
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