Relativistic Krori-Barua Compact Stars in f(R, T) Gravity

被引:86
作者
Shamir, M. Farasat [1 ]
Asghar, Zoya [1 ]
Malik, Adrian [2 ]
机构
[1] Natl Univ Comp & Emerging Sci, Lahore Campus Pakistan, Lahore, Pakistan
[2] Univ Management & Technol, Dept Math, Sialkot Campus, Sialkot, Pakistan
来源
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS | 2022年 / 70卷 / 12期
关键词
compact stars; krori-barua metric; metric potentials; f; (R; T) theory of gravity; NEUTRON-STAR; MASS; INFLATION; SPHERES; RADIUS;
D O I
10.1002/prop.202200134
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
This work aims to investigate the behaviour of compact stars in the background of f (R, T) theory of gravity. For current work, we consider the Krori-Barua metric potential i.e., nu(r) = Br-2 + C and lambda(r) = Ar-2, where, A, B and C are constants. We use matching conditions of spherically symmetric space-time with Schwarzschild solution as an exterior geometry and examine the physical behaviour of stellar structure by assuming the exponential type f (R, T) gravity model. In the present analysis, we discuss the graphical behaviour of energy density, radial pressure, tangential pressure, equation of state parameters, anisotropy and stability analysis respectively. Furthermore, an equilibrium condition can be visualized through the modified Tolman-Oppenheimer-Volkov equation. Some extra features of compact stars i.e. mass-radius function, compactness factor and surface redshift have also been investigated. Conclusively, all the results in current study validate the existence of compact stars under exponential f (R, T) gravity model.
引用
收藏
页数:8
相关论文
共 61 条
[1]  
Abbas G., 2015, ASTROPHYS SPACE SCI, V357
[2]   Sharp Bounds on the Critical Stability Radius for Relativistic Charged Spheres [J].
Andreasson, Hakan .
COMMUNICATIONS IN MATHEMATICAL PHYSICS, 2009, 288 (02) :715-730
[3]   Further stable neutron star models from f(R) gravity [J].
Astashenok, Artyom V. ;
Capozziello, Salvatore ;
Odintsov, Sergei D. .
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2013, (12)
[4]   Comment on "f(R,T) gravity" [J].
Barrientos, Jose O. ;
Rubilar, Guillermo F. .
PHYSICAL REVIEW D, 2014, 90 (02)
[5]   Charged strange star with Krori-Barua potential in f(R, T) gravity admitting Chaplygin equation of state [J].
Bhar, Piyali .
EUROPEAN PHYSICAL JOURNAL PLUS, 2020, 135 (09)
[6]   A new class of relativistic model of compact stars of embedding class I [J].
Bhar, Piyali ;
Singh, Ksh. Newton ;
Manna, Tuhina .
INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2017, 26 (09)
[7]   A new hybrid star model in Krori-Barua spacetime [J].
Bhar, Piyali .
ASTROPHYSICS AND SPACE SCIENCE, 2015, 357 (01)
[8]   Anisotropic charged strange stars in Krori-Barua spacetime under f(R, T) gravity [J].
Biswas, Suparna ;
Deb, Debabrata ;
Ray, Saibal ;
Guha, B. K. .
ANNALS OF PHYSICS, 2021, 428
[9]   Bounds on the basic physical parameters for anisotropic compact general relativistic objects [J].
Bohmer, C. G. ;
Harko, T. .
CLASSICAL AND QUANTUM GRAVITY, 2006, 23 (22) :6479-6491
[10]  
BUCHDAHL HA, 1970, MON NOT R ASTRON SOC, V150, P1