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
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页数:8
相关论文
共 61 条
[31]   A study of charged stellar structure in modified f (R, φ, Χ) gravity [J].
Malik, Adnan ;
Mofarreh, Fatemah ;
Ali, Akram ;
Hamid, Mah Rukh .
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS, 2022, 19 (11)
[32]   Traversable wormhole solutions in the f (R) theories of gravity under the Karmarkar condition [J].
Malik, Adnan ;
Mofarreh, Fatemah ;
Zia, Aqsa ;
Ali, Akram .
CHINESE PHYSICS C, 2022, 46 (09)
[33]  
Malik A, 2022, EUR PHYS J C, V82, DOI 10.1140/epjc/s10052-022-10135-0
[34]   A study of anisotropic compact stars in f (R, φ, X) theory of gravity [J].
Malik, Adnan ;
Ahmad, Iftikhar ;
Kiran .
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS, 2022, 19 (02)
[35]  
Malik A, 2021, EUR PHYS J PLUS, V136, DOI 10.1140/epjp/s13360-021-02129-w
[36]   Noether symmetries of LRS Bianchi type-I spacetime in f (R, φ, χ) gravity [J].
Malik, Adnan ;
Shamir, M. Farasat ;
Hussain, Ibrar .
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS, 2020, 17 (11)
[37]   Tolman-Oppenheimer-Volkoff equations in modified Gauss-Bonnet gravity [J].
Momeni, D. ;
Myrzakulov, R. .
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS, 2015, 12 (02)
[38]   Stellar equilibrium configurations of compact stars in f (R, T) theory of gravity [J].
Moraes, P. H. R. S. ;
Arbanil, Jose D. V. ;
Malheiro, M. .
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2016, (06)
[39]   Embedded class-I solution of compact stars in f (R) gravity with Karmarkar condition [J].
Naz, Tayyaba ;
Usman, Ammara ;
Shamir, M. Farasat .
ANNALS OF PHYSICS, 2021, 429
[40]   Modified gravity theories on a nutshell: Inflation, bounce and late-time evolution [J].
Nojiri, S. ;
Odintsov, S. D. ;
Oikonomou, V. K. .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2017, 692 :1-104