https://doi.org/10.1140/epjc/s10052-023-12141-2
Regular Article - Theoretical Physics
A comprehensive study of Bardeen stars with conformal motion in 
gravity
1
National University of Computer and Emerging Sciences, Lahore Campus, Lahore, Pakistan
2
School of Mathematical Sciences, Zhejiang Normal University, Jinhua, Zhejiang, China
3
Department of Mathematics, University of Management and Technology, Sialkot Campus, Lahore, Pakistan
4
School of Mathematical Sciences, Queen Mary University of London, London, UK
b adnan.malik@zjnu.edu.cn, adnan.malik@skt.umt.edu.pk, adnanmalik_chheena@yahoo.com
Received:
17
August
2023
Accepted:
13
October
2023
Published online:
4
November
2023
In this manuscript, we use the conformal killing vectors to solve the Einstein–Maxwell field equations in the background of modified gravity. We consider the observational data for four different stars namely 
, 
, 
and 
respectively. By using the data, we derive the physical parameters from the matching criteria using conformal killing vectors and the exterior Bardeen geometry. Furthermore, several physical properties of compact stellar structures are examined in order to achieve the physical validity and stability for considered models. The graphical analysis including energy density, pressure components, equation of state parameters, and energy conditions are examined. Moreover, the equilibrium conditions through Tolman–Oppenheimer–Volkoff equation and stability criteria through adiabatic index for the charged stellar structure study are investigated. It is worth noting that all of these compact objects are physically viable and stable under conformal motion in context of Bardeen geometry for two different models of theory of gravity. Conclusively, the results show that f(G) gravity with Bardeen model may provide more massive stellar objects as compared to general relativity.
© The Author(s) 2023
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