Anisotropic charged stellar models with modified Van der Waals EoS in f(Q) gravity

被引:43
作者
Ditta, Allah [1 ]
Tiecheng, Xia [1 ]
Errehymy, Abdelghani [2 ,3 ]
Mustafa, G. [4 ]
Maurya, S. K. [5 ]
机构
[1] Shanghai Univ, Dept Math, Shanghai 200444, Peoples R China
[2] Univ KwaZulu Natal, Astrophys Res Ctr, Sch Math Stat & Comp Sci, Private Bag X54001, ZA-4000 Durban, South Africa
[3] Hassan II Univ Casablanca, Fac Sci Ain Chock, Dept Phys, Lab High Energy Phys & Condensed Matter, BP 5366, Maarif 20100, Casablanca, Morocco
[4] Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Peoples R China
[5] Univ Nizwa, Coll Arts & Sci, Dept Math & Phys Sci, Nizwa, Oman
来源
EUROPEAN PHYSICAL JOURNAL C | 2023年 / 83卷 / 03期
基金
新加坡国家研究基金会; 中国国家自然科学基金;
关键词
APPROACHING SCHWARZSCHILD LIMIT; GAUSS-BONNET THEORY; F Q GRAVITY; QUARK STARS; DYNAMICAL INSTABILITY; GENERAL-RELATIVITY; NOETHER SYMMETRIES; EMBEDDING APPROACH; COMPACT STARS; SPHERES;
D O I
10.1140/epjc/s10052-023-11390-5
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
This paper is based on the study of compact stars in the context of electric fields and the nonmetricity effects of gravity. Due to this, we are motivated to build stellar models based on spherically symmetric space-time in f (Q) gravity. The space-time solution is obtained by Durgapal and Bannerji (Phys Rev D 27:328-331,1983) potential along with modified Van der Waals equation of state (EoS) p(r) = eta rho(2) + beta rho/gamma rho+1 by introducing a specific form of electric charge function q(r) = kr(3). In order to validate our charge model, we used observational data from the literature for celestial objects like Her X-1, 4U 1538-52, SAX J1808.4-3658, and SMC X-1. Furthermore, we have also retrieved the uncharged effects of gravity for the model SMC X-1 by taking k = 0. Our present physical analysis shows that all the obtained features for the present solution are in excellent agreement with the viable model as far as observational data is concerned.
引用
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页数:16
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