暗物质对微小变形紧凑恒星结构特性的影响

IF 5 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Physics of the Dark Universe Pub Date : 2024-08-24 DOI:10.1016/j.dark.2024.101629
Z. Yousaf , Kazuharu Bamba , Bander Almutairi , Yuki Hashimoto , S. Khan
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引用次数: 0

摘要

在本手稿中,我们研究了在艾纳斯托密度曲线的激励下构建各向异性暗物质紧凑星的可能性。这项工作在著名的阿德勒-芬奇-斯基亚公设框架内,为各向异性流体球体开发了分析解决方案。这个玩具模型包含了各向异性的流体分布,其中包括暗物质成分。我们在引力解耦框架内使用最小几何变形方案,将各向异性纳入恒星系统的压力曲线。在这种情况下,我们对Θ场扇形的时间成分进行建模,以描述引力物质源中暗物质的贡献。我们提出了研究各向异性自引力结构的另一种方法。这种方法纳入了引力解耦产生的额外场源,作为暗物质成分。我们明确验证了所提出的模型是否满足详细描述现实紧凑结构的所有要求。我们的结论是,用阿德勒-芬奇-斯凯亚公设对艾纳斯托密度模型进行建模,可以形成良好的、可行的天体物理学结果,可以用来对暗物质恒星构型进行建模。
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Imprints of dark matter on the structural properties of minimally deformed compact stars

In this manuscript, we investigate the possibility of constructing anisotropic dark matter compact stars motivated by the Einasto density profile. This work develops analytical solutions for an anisotropic fluid sphere within the framework of the well-known Adler–Finch–Skea metric. This toy model incorporates an anisotropic fluid distribution that includes a dark matter component. We use the minimal geometric deformation scheme within the framework of gravitational decoupling to incorporate anisotropy into the pressure profile of the stellar system. In this context, we model the temporal constituent of the Θ-field sector to characterize the contribution of dark matter within the gravitational matter source. We present an alternative approach to studying anisotropic self-gravitating structures. This approach incorporates additional field sources arising from gravitational decoupling, which act as the dark component. We explicitly verify whether the proposed model satisfies all the requirements for describing realistic compact structures in detail. We conclude that the modeling of the Einasto density model with the Adler–Finch–Skea metric gives rise to the formation of well-behaved and viable astrophysical results that can be employed to model the dark matter stellar configurations.

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来源期刊
Physics of the Dark Universe
Physics of the Dark Universe ASTRONOMY & ASTROPHYSICS-
CiteScore
9.60
自引率
7.30%
发文量
118
审稿时长
61 days
期刊介绍: Physics of the Dark Universe is an innovative online-only journal that offers rapid publication of peer-reviewed, original research articles considered of high scientific impact. The journal is focused on the understanding of Dark Matter, Dark Energy, Early Universe, gravitational waves and neutrinos, covering all theoretical, experimental and phenomenological aspects.
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