用Finch-Skea度规探索f(Q)引力中的带电致密恒星

IF 0.9 3区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS

High Energy Density Physics Pub Date : 2025-06-28 DOI:10.1016/j.hedp.2025.101211

M. Sharif , Eman M. Moneer , Madiha Ajmal , Euaggelos E. Zotos

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引用次数: 0

摘要

本文利用Finch-Skea度规探讨了f(Q)引力框架（Q表示非度量标量）内各向异性致密星的可行性和稳定性。为了确定未知常数，恒星的内部与外部在边界处的Reissner-Nordström解进行了平滑匹配。考察了各种物理性质，包括流体参数、状态方程参数和能量条件。此外，还研究了带电致密星的质量半径关系、紧度和红移。利用Tolman-Oppenheimer-Volkoff方程、因果关系条件、Herrera裂纹和绝热指数对平衡和稳定性进行了评价。我们的发现表明，f(Q)引力支持稳定和可行的致密恒星的存在，满足所有必要的物理条件。

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Exploring charged compact stars in f(Q) gravity with the Finch–Skea metric

This manuscript explores the feasibility and stability of anisotropic compact stars within the

f (Q)

gravity framework (

Q

represents the non-metricity scalar) using the Finch–Skea metric. To determine the unknown constants, the star’s interior is smoothly matched with the exterior Reissner–Nordström solution at the boundary. Various physical properties, including fluid parameters, equation of state parameters and energy conditions are examined. Additionally, the mass–radius relationship, compactness and redshift of charged compact stars are investigated. Equilibrium and stability are evaluated using the Tolman–Oppenheimer–Volkoff equation, the causality condition, the Herrera cracking and the adiabatic index. Our findings demonstrate that

f (Q)

gravity supports the existence of stable and viable compact stars, fulfilling all the required physical conditions.

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来源期刊

High Energy Density Physics PHYSICS, FLUIDS & PLASMAS-

CiteScore

4.20

自引率

6.20%

发文量

审稿时长

6-12 weeks

期刊介绍： High Energy Density Physics is an international journal covering original experimental and related theoretical work studying the physics of matter and radiation under extreme conditions. ''High energy density'' is understood to be an energy density exceeding about 1011 J/m3. The editors and the publisher are committed to provide this fast-growing community with a dedicated high quality channel to distribute their original findings. Papers suitable for publication in this journal cover topics in both the warm and hot dense matter regimes, such as laboratory studies relevant to non-LTE kinetics at extreme conditions, planetary interiors, astrophysical phenomena, inertial fusion and includes studies of, for example, material properties and both stable and unstable hydrodynamics. Developments in associated theoretical areas, for example the modelling of strongly coupled, partially degenerate and relativistic plasmas, are also covered.