Shadow and weak gravitational lensing for Ellis-Bronnikov wormhole  

作　　者：Mirzabek Alloqulov Farruh Atamurotov Ahmadjon Abdujabbarov Bobomurat Ahmedov Vokhid Khamidov 

机构地区：[1]New Uzbekistan University,Movarounnahr street 1,Tashkent 100000,Uzbekistan [2]Institute of Fundamental and Applied Research,National Research University TIIAME,Kori Niyoziy 39,Tashkent 100000,Uzbekistan [3]Ulugh Beg Astronomical Institute,Astronomy St 33,Tashkent 100052,Uzbekistan [4]Central Asian University,Milliy Bog’Street 264,Tashkent 111221,Uzbekistan [5]University of Public Safety of the Republic of Uzbekistan,Tashkent Region 100109,Uzbekistan [6]Institute of Theoretical Physics,National University of Uzbekistan,Tashkent 100174,Uzbekistan [7]University of Tashkent for Applied Sciences,Str.Gavhar 1,Tashkent 100149,Uzbekistan [8]Tashkent University of Information Technologies named after Muhammad al Khwarizmi,Amir Temur 108,Tashkent 100014,Uzbekistan

出　　处：《Chinese Physics C》2024年第2期183-194,共12页中国物理C（英文版）

基　　金：partly Supported by Grants F-FA-2021-432,F-FA-2021-510,and MRB-2021-527 of the Ministry of Higher Education,Science and Innovations of the Republic of Uzbekistan。

摘　　要：In this study,we investigated the gravitational weak lensing and shadow of the Ellis-Bronnikov wormhole.First,we studied the photon motion in a plasma medium and a wormhole shadow.It was shown that the radius of the photon sphere of the Ellis-Bronnikov wormhole and the size of the wormhole shadow become larger under the influence of the parameter a.The upper limit of the parameter a in the Ellis-Bronnikov wormhole spacetime was obtained.Second,we investigated the weak gravitational lensing for the Ellis-Bronnikov wormhole and calculated the deflection angle for uniform and non uniform plasma cases.The value of the deflection angle for uniform plasma increased with the increase in plasma parameter value,and vice versa for non uniform plasma.We found that,under the influence of the parameter a,the values of the deflection angles for two cases decreased.Finally,we investigated the magnification of image brightness using the deflection angle of the light rays around the wormhole in the EllisBronnikov theory.

关 键 词：LENSING wormhole shadow Ellis-Bronnikov wormhole 

分 类 号：P142.84[天文地球—天体物理]