Analysis of anisotropic quark stellar objects in modified gravity

IF 1.8 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS Astrophysics and Space Science Pub Date : 2024-11-27 DOI:10.1007/s10509-024-04379-3
M. Sharif, K. Hassan
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Abstract

In this paper, we compute the structural composition of a static spherically symmetric regime configured with anisotropic distribution in the context of \(f(G,T)\) gravity. To accomplish this, we adopt the model \(f(G,T)=G^{2}+\varpi T\), where \(\varpi \) denotes the coupling constant. We establish the modified field equations and utilize the MIT bag model equation of state to determine the graphical analysis of Her X-I, LMC X-4, 4U1820-30, and PSR J1614-2230 compact bodies. The Tolman IV solution is employed to study the above-mentioned structures. We check the graphical behavior of energy density, pressure components, anisotropy, and energy conditions by keeping the coupling constant fixed. We also study the behavior of mass, compactness, and redshift factors. Finally, we discuss the stability of the resulting solution through two different criteria. It is found that all the star candidates portray viable and stable behavior, except PSR J1614-2230, which is viable but not stable.

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各向异性夸克恒星物体在修正引力下的分析
在本文中,我们计算了在\(f(G,T)\)引力背景下配置了各向异性分布的静态球对称体制的结构组成。为此,我们采用了 \(f(G,T)=G^{2}+\varpi T\) 模型,其中 \(\varpi \) 表示耦合常数。我们建立了修正场方程,并利用麻省理工包模型状态方程确定了Her X-I、LMC X-4、4U1820-30和PSR J1614-2230紧凑天体的图解分析。采用托尔曼IV解来研究上述结构。在保持耦合常数不变的情况下,我们检验了能量密度、压力分量、各向异性和能量条件的图形行为。我们还研究了质量、紧密度和红移因子的行为。最后,我们通过两种不同的标准讨论了所得解的稳定性。结果发现,除了 PSR J1614-2230 具有可行性但不稳定之外,所有候选星都具有可行性和稳定性。
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来源期刊
Astrophysics and Space Science
Astrophysics and Space Science 地学天文-天文与天体物理
CiteScore
3.40
自引率
5.30%
发文量
106
审稿时长
2-4 weeks
期刊介绍: Astrophysics and Space Science publishes original contributions and invited reviews covering the entire range of astronomy, astrophysics, astrophysical cosmology, planetary and space science and the astrophysical aspects of astrobiology. This includes both observational and theoretical research, the techniques of astronomical instrumentation and data analysis and astronomical space instrumentation. We particularly welcome papers in the general fields of high-energy astrophysics, astrophysical and astrochemical studies of the interstellar medium including star formation, planetary astrophysics, the formation and evolution of galaxies and the evolution of large scale structure in the Universe. Papers in mathematical physics or in general relativity which do not establish clear astrophysical applications will no longer be considered. The journal also publishes topically selected special issues in research fields of particular scientific interest. These consist of both invited reviews and original research papers. Conference proceedings will not be considered. All papers published in the journal are subject to thorough and strict peer-reviewing. Astrophysics and Space Science features short publication times after acceptance and colour printing free of charge.
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