Durgapal-Fuloria Bose-Einstein condensate stars within f(R,T) gravity theory

IF 10.5 4区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Journal of High Energy Astrophysics Pub Date : 2025-09-25 DOI:10.1016/j.jheap.2025.100486

Meghanil Sinha, S. Surendra Singh

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引用次数: 0

Abstract

This manuscript studies the Bose-Einstein condensate (BEC) stars in the light of

f (R, T)

gravity here with Durgapal-Fuloria (DP) metric ansatz. The function under this study features as

f (R, T) = R + 2 η T

, where η represents the coupling constant. With the help of it, we have formulated a stellar model describing the isotropic matter here within. Our analysis covers energy conditions, equation of state (EoS) parameter and gradients of the energy-momentum tensor components for a valid BEC stellar framework within

f (R, T)

gravitational theory with satisfactory results. The model's stability has been validated via multiple stability criteria viz., the velocity of sound, study of adiabatic index and surface redshift where all are found to be lying within the acceptable range for our stellar model. Thus in all the cases we have found our model to be stable and realistic. From the graphical representations the impact of the coupling constant and the parameter of the DP metric potential are clearly visible. Thus we can state that with all the above-mentioned features we have introduced new stellar solutions for BEC stars with enhanced precise results in this modified gravity.

查看原文本刊更多论文

Durgapal-Fuloria玻色-爱因斯坦凝聚星在f（R，T）引力理论

本文用Durgapal-Fuloria （DP）度规分析了f（R，T）引力下玻色-爱因斯坦凝聚体（BEC）恒星。本研究的函数为f(R，T)=R+2ηT，其中η为耦合常数。在它的帮助下，我们制定了一个恒星模型来描述这里的各向同性物质。我们分析了f（R，T）引力理论下有效BEC恒星框架的能量条件、状态方程（EoS）参数和能量-动量张量分量的梯度，得到了满意的结果。该模型的稳定性已通过多种稳定性标准得到验证，即声速、绝热指数和表面红移的研究，所有这些都被发现位于我们的恒星模型的可接受范围内。因此，在所有情况下，我们发现我们的模型是稳定和现实的。从图形表示中可以清楚地看到耦合常数和DP度量势参数的影响。因此，我们可以说，具有上述所有特征，我们已经为BEC恒星引入了新的恒星解决方案，并在这种修正的重力下提高了精确结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of High Energy Astrophysics Earth and Planetary Sciences-Space and Planetary Science

CiteScore

9.70

自引率

5.30%

发文量

审稿时长

65 days

期刊介绍： The journal welcomes manuscripts on theoretical models, simulations, and observations of highly energetic astrophysical objects both in our Galaxy and beyond. Among those, black holes at all scales, neutron stars, pulsars and their nebula, binaries, novae and supernovae, their remnants, active galaxies, and clusters are just a few examples. The journal will consider research across the whole electromagnetic spectrum, as well as research using various messengers, such as gravitational waves or neutrinos. Effects of high-energy phenomena on cosmology and star-formation, results from dedicated surveys expanding the knowledge of extreme environments, and astrophysical implications of dark matter are also welcomed topics.