Estimating power-law exponents from observations in electromagnetic non-minimal Maxwell-Gauss-Bonnet coupling cosmology

IF 10.2 4区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Journal of High Energy Astrophysics Pub Date : 2024-04-06 DOI:10.1016/j.jheap.2024.04.002

Rami Ahmad El-Nabulsi , Waranont Anukool

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Abstract

We discuss a generalized non-minimal Maxwell-Gauss-Bonnet power-law cosmological model characterized by the presence of electromagnetic field and variable cosmological and gravitational constant. We analyze the late-time dynamics characterized by power-law solutions. The model is constrained with local gravitational acceleration measurements, the SH0ES project which estimate the Hubble parameter, Planck TT, TE, EE + low E +lensing +SNe+ BAO data which estimate the EoS parameter and data coming from distant supernovae type Ia, the Hubble function $H (z)$ measurements and information coming from the Alcock-Paczynski test which estimate the numerical range of the non-minimal coupling parameter. By adopting a variable cosmological and gravitational constants, it was found that the universe is acceleratedly expanding with time and dominated by dark/phantom energy and an electromagnetic field comparable to the cosmological lambda. The variations of the gravitational constant time agree with several phenomenological theories including the entropic and holographic principle. The final fate of an asymptotically static universe was found also to be a plausible scenario in the model discussed.

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从电磁非最小麦克斯韦-高斯-波奈耦合宇宙学中的观测结果估算幂律指数

我们讨论了一个广义的非最小麦克斯韦-高斯-波内特幂律宇宙学模型，其特征是存在电磁场和可变宇宙学常数和引力常数。我们分析了以幂律解为特征的晚期动力学。该模型受到以下数据的约束：本地重力加速度测量数据；估计哈勃参数的 SH0ES 项目；估计 EoS 参数的普朗克 TT、TE、EE + 低 E +lensing +SNe+ BAO 数据；来自遥远的 Ia 型超新星的数据；哈勃函数 H(z) 测量数据；以及来自估计非最小耦合参数数值范围的 Alcock-Paczynski 试验的信息。通过采用可变的宇宙学常数和引力常数，发现宇宙随着时间加速膨胀，并由暗能量/象能量和与宇宙学λ相当的电磁场主导。引力常数时间的变化与包括熵原理和全息原理在内的几种现象学理论一致。研究发现，在所讨论的模型中，渐近静态宇宙的最终命运也是一种可信的情况。

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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.