Exploring the shadow of a rotating charged ModMax black hole  

作　　者：Khurshid Karshiboev Farruh Atamurotov Ahmadjon Abdujabbarov Ali Övgün Anvar Reyimberganov 

机构地区：[1]Institute of Theoretical Physics,National University of Uzbekistan,Tashkent 100174,Uzbekistan [2]New Uzbekistan University,Movarounnahr Street 1,Tashkent 100000,Uzbekistan [3]Central Asian University,Milliy Bog'Street 264,Tashkent 111221,Uzbekistan [4]University of Tashkent for Applied Sciences,Str.Gavhar 1,Tashkent 100149,Uzbekistan [5]Tashkent State Technical University,Tashkent 100095,Uzbekistan [6]Ulugh Beg Astronomical Institute,Astronomy Street 33,Tashkent 100052,Uzbekistan [7]Institute of Fundamental and Applied Research,National Research University TIIAME,Kori Niyoziy 39,Tashkent 100000,Uzbekistan [8]Physics Department,Eastern Mediterranean University,Famagusta,99628 North Cyprus,via Mersin 10,Turkey [9]Urgench State University,Urgench 220100,Uzbekistan

出　　处：《Communications in Theoretical Physics》2024年第2期89-101,共13页理论物理通讯（英文版）

基　　金：partly supported by Research Grant F-FA-2021510 of the Uzbekistan Ministry for Innovative Development;support received from the Scientific and Technological Research Council of Türkiye(TüBITAK),the Abdus Salam International Centre for Theoretical Physics,Trieste,Italy and the Sponsoring Consortium for Open Access Publishing in Particle Physics(SCOAP3)。

摘　　要：The research presented in this paper discusses the impact that the parameters of charge(Q)and screening factor(γ)have on properties of the horizon and silhouette of rotating charged Mod Max black holes which were reviewed in[Eur.Phys.J.C(2022)82:1155]recently,building upon previous findings in the field.Furthermore,the study explores the behavior of null geodesics,which can help us better understand the apparent shape of the black hole’s silhouette,as well as the distortion parameter and approximate radii of the silhouette that are influenced by the aforementioned parameters,and there are some values of parameter Q which corresponds to data from the Event Horizon Telescope(EHT).Notably,we explore the distortion parameter and approximate radii of the silhouette,revealing that while an increase inγleads to a growth in silhouette radius(Rs),it simultaneously reduces the distortion rate(δs).Conversely,heightened Q charge results in a reduction of Rsaccompanied by an increase inδs.Lastly,the paper analyzes the effects of the black hole’s parameters on the effective potential and energy emission:the peak value of the energy emission rate experiences a decrease as the screening factor(γ)increases,while it increases with higher values of the charge parameter(Q).

关 键 词：black hole ModMax gravity rotating black hole black hole shadow 

分 类 号：O412.1[理学—理论物理]