Observational appearances of hairy black holes in the framework of gravitational decoupling

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外文摘要：We investigate the observational appearance of static and spherically symmetric hairy black holes in the framework of gravitational decoupling with the weak energy condition(WEC).Two types of thin illumination conditions are studied:spherical accretion and disk accretion.As the hairy parameter increases,the size of the photon sphere and photon rings in both models decreases,and the overall luminosity attenuation becomes more pronounced.In spherical accretion,the luminosity of infalling accretion is significantly lower than that of stationary accretion.In disk accretion the luminosity of the black hole is contributed by direct emission,the lensing ring and the photon ring.Employing four types of astrophysical disk luminosity model,we investigate the appearance of halos and note that their luminosities do not superimpose when the source is on or beyond the innermost stable circular orbit.

外文关键词：

hairy black holeshadowgravitational decouplingaccretion disk

作者：

Yizhi Liang、Xin Lyu、Jun Tao

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作者单位：

Center for Theoretical Physics,College of Physics,Sichuan University,Chengdu 610065,China

基金：

National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)server from Kun-Lun in Center for Theoretical Physics,School of Physics,Sichuan University

项目编号：

121752121227518312275184

出版年：

2024

DOI：

10.1088/1572-9494/ad4ce0

理论物理通讯(英文版)

中国科学院理论物理研究所中国物理学会

理论物理通讯(英文版)

CSTPCD

影响因子：0.333

ISSN：0253-6102

年,卷(期)：2024.76(8)