Gravitational lensing by a black-bounce-Reissner-Nordstrom spacetime

被引：32
作者：
Zhang, Jing [1 ]
Xie, Yi [2 ]
机构：
[1] Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China
[2] Chinese Acad Sci, Purple Mt Observ, Nanjing 210023, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL C | 2022年 / 82卷 / 05期
基金：
中国国家自然科学基金;
关键词：
STRONG-FIELD; HOLE; DEFLECTION; GRAVITY; SHADOW; CHARGE; MASS;
D O I：
10.1140/epjc/s10052-022-10441-7
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We investigate the weak and strong deflection gravitational lensing by a black-bounce-Reissner-Nordstrom spacetime and obtain their lensing observables. Assuming the supermassive black holes in the Galactic Center and at the center of M87, Sgr A* and M87* respectively, as the lenses, we evaluate these observables and assess their detectability. We also intensively compare these lensing signatures with those of various tidal or charged spacetimes. We find that it might be possible to distinguish these spacetimes by measuring the fluxes difference of the lensed images by Sgr A* in its quiet stage.
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页数：22
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