Fermat’s principle in constant gravitational field
نویسندگان
چکیده
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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ژورنال
عنوان ژورنال: International Journal of Modern Physics D
سال: 2021
ISSN: ['1793-6594', '0218-2718']
DOI: https://doi.org/10.1142/s0218271821500942