Anisotropic Strange Star Model Beyond Standard Maximum Mass Limit by Gravitational Decoupling in f(Q)$f(Q)$ Gravity

被引:46
|
作者
Maurya, S. K. [1 ]
Singh, Ksh Newton [2 ]
Lohakare, Santosh, V [3 ]
Mishra, B. [3 ]
机构
[1] Univ Nizwa, Coll Arts & Sci, Dept Math & Phys Sci, Nizwa, Oman
[2] Natl Def Acad, Dept Phys, Pune 411023, Maharashtra, India
[3] Birla Inst Technol & Sci Pilani, Hyderabad Campus, Hyderabad 500078, India
来源
关键词
compact objects; neutron stars; theoretical models;
D O I
10.1002/prop.202200061
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The current theoretical development identified as the gravitational decoupling via Complete Geometric Deformation (CGD) method that has been introduced to explore the nonmetricity Q effects in relativistic astrophysics. In the present work, we have investigated the gravitationally decoupled anisotropic solutions for the strange stars in the framework of f(Q)$f(Q)$ gravity by utilizing the CGD technique. To do this, we started with Tolman metric ansatz along with the MIT Bag model equation of state related to the hadronic matter. The solutions of the governing equations of motions are obtained by using two approaches, namely the mimicking of the theta sector to the seed radial pressure and energy density of the fluid model. The obtained models describe the self-gravitating static, compact objects whose exterior solution can be given by the vacuum Schwarzschild Anti-de Sitter spacetime. In particular, we modeled five stellar candidates, viz., LMC X-4, PSR J1614-2230, PSR J0740+6620, GW190814, and GW 170817 by using observational data. The rigorous viability tests of the solutions have been performed through regularity and stability conditions. We observed that the nonmetricity parameter and decoupling constant show a significant effect on stabilizing to ensure the physically realizable stellar models. The innovative feature of this work is to present the stable compact objects with masses beyond the 2M circle dot$2 M_{\odot }$ without engaging of exotic matter. Therefore, the present study shows a new perception and physical significance about the exploration of ultra-compact astrophysical objects.
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页数:15
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