Shielding a charged black hole

被引：16

作者：

Feng, Justin C. ^{[1
]}

Chakraborty, Sumanta ^{[2
]}

Cardoso, Vitor ^{[1
,3
]}

机构：

[1] Univ Lisboa UL, Inst Super Tecn IST, Dept Fis, CENTRA, Ave Rovisco Pais 1, P-1049 Lisbon, Portugal

[2] Indian Assoc Cultivat Sci, Sch Phys Sci, Kolkata 700032, India

[3] Niels Bohr Int Acad, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark

来源：

PHYSICAL REVIEW D | 2023年 / 107卷 / 04期

关键词：

SPHERICAL GALAXIES;

D O I：

10.1103/PhysRevD.107.044050

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We describe a shielding mechanism for a charged black hole immersed in a background involving charged matter fields, solely arising from the Einstein-Maxwell field equations. In particular, we consider a charged generalization of the Einstein cluster, that is a charged black hole surrounded by an effective fluid model for a partially charged dust cloud. We show that the shielding mechanism, arising thereof, is generic and appears in a different parametrization of the problem as well. In this process, we provide the most general electrovacuum solution in a spacetime region devoid of charges, but in the presence of a static and spherically symmetric charge distribution elsewhere. Side by side, we also introduce a convenient parametrization, providing the global solution of the Einstein-Maxwell's field equations in the presence of a charged black hole within the environment of charged fluid. We also comment on the nature of the photon sphere, shadow radius and the eikonal quasinormal modes in the Einstein-Maxwell cluster.

引用

页数：13

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