Shadows and observational appearance of a new family of Ayón-Beato-García black holes

作     者：Ping-Hui Mou Yun-Xian Chen Ke-Jian He Guo-Ping Li Ping-Hui Mou;Yun-Xian Chen;Ke-Jian He;Guo-Ping Li

作者机构：School of Physics and AstronomyChina West Normal UniversityNanchong 637000China Department of Physics and Chongqing Key Laboratory for Strongly Coupled PhysicsChongqing UniversityChongqing 401331China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2022年第74卷第12期

页      面：87-96页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：the National Natural Science Foundation of China(Grant Nos.11875095 and 11903025) the starting fund of China West Normal University(Grant No.18Q062) the Sichuan Youth Science and Technology Innovation Research Team(21CXTD0038) the Chongqing Science and Technology Bureau(cstc2022ycjh-bgzxm0161) the Natural Science Foundation of SiChuan Province(2022NSFSC1833) 

主　　题：black hole shadow thin disk accretion rings 

摘      要：In this paper,we study the shadows and observational appearance of the Ayón-Beato-García(ABG)black hole,which is surrounded by a thin disk *** a four-dimensional ABG black hole,as the charge q increases,the event horizon r+,radius rp and impact parameter bp of the photon sphere decrease,while the maximum value of effective potential Veff ***,as the termγassociated with nonlinear electrodynamics increases,the related physical quantities r+,rp and bp increase,but the maximum value of Veff *** the light ray reaches the vicinity of the ABG black hole,one can observe the trajectories of the light rays appearing as three types,i.e.,direct emission,lens ring and photon ***,the shadows and the observational appearance of the ABG black hole are *** results show that the charge q and the termγhave a great influence on the shape and intensity of the black hole *** the relevant state parameters change or the emission model changes,it can be argued that it is the direct emission that plays a decisive role in the total observed intensity of the ABG black hole,while the contribution of the lens ring to the total observed intensity is small and the photon ring makes almost no contribution.