Holographic Einstein ring of a charged Rastall AdS black hole with bulk electromagnetic field  

作　　者：M.Israr Aslam Xiao-Xiong Zeng Rabia Saleem Xin-Yun Hu M.Israr Aslam;曾晓雄;Rabia Saleem;胡馨匀(Department of Mathematics,COMSATS University Islamabad,Lahore Campus,Lahore-54000 Pakistan;State Key Laboratory of Mountain Bridge and Tunnel Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Department of Mechanics,Chongqing Jiaotong University,Chongqing 400074,China;College of Economic and Management,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]Department of Mathematics,COMSATS University Islamabad,Lahore Campus,Lahore-54000 Pakistan [2]State Key Laboratory of Mountain Bridge and Tunnel Engineering,Chongqing Jiaotong University,Chongqing 400074,China [3]Department of Mechanics,Chongqing Jiaotong University,Chongqing 400074,China [4]College of Economic and Management,Chongqing Jiaotong University,Chongqing 400074,China

出　　处：《Chinese Physics C》2024年第11期120-137,共18页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China (11675140,11705005,12375043);the Innovation and Development Joint Foundation of Chongqing Natural Science Foundation (CSTB2022NSCQ-LZX0021);the Basic Research Project of Science and Technology Committee of Chongqing (CSTB2023NSCQ-MSX0324)。

摘　　要：We study the Einstein images of a charged Rastall AdS black hole(BH)within the fabric of AdS/CFT correspondence.Considering the holographic setup,we analyze the amplitude of the total response function for various values of model parameters.With an increase in parameterλand temperature T,the amplitude of the response function decreases,while it increases with an increase in electric charge e and chemical potentialμ.The influence of frequencyωalso plays an important role in the bulk field,as it is found that decreasingωleads to an increase in the periods of the waves,which means that the amplitude of the response function also depends on the wave source.The relation between T and the inverse of the horizon for various values of parameterλis interpreted under fixed values of other involved parameters.These,in turn,affect the behavior of the response function and the Einstein ring,which may be used to differentiate the present study from previous ones.We construct the holographic images of the BH in bulk via a special optical system.The results show that the Einstein ring always appears with concentric stripes at the position of the north pole,and this ring transforms into a luminosity-deformed ring or bright light spot when the distant observer lies away from the north pole.Finally,we discuss the influence of the associated parameters on the Einstein ring radius,which is consistent with wave optics.

关 键 词：Rastall gravity AdS/CFT correspondence Black hole Einstein rings 

分 类 号：P145.8[天文地球—天体物理]