使用特定哈勃参数的分形宇宙学模型中的两种暗能量形式

IF 1.9 4区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS New Astronomy Pub Date : 2024-02-29 DOI:10.1016/j.newast.2024.102214
D.D. Pawar , D.K. Raut , A.P. Kale
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引用次数: 0

摘要

本文的主要目的是研究由两种形式的暗能量组成的分形 FRW 宇宙学模型。我们利用宇宙中容纳的暗能量研究了分形框架下的宇宙行为。场方程的解是通过使用哈勃参数作为过境尺度因子得到的。我们获得了模型参数的最佳拟合值,并用最新的哈勃和 SNe-Ia 数据集对我们的模型进行了约束。最后,我们进行了状态探测器诊断,发现所得到的模型接近标准 CDM 模型。
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Two forms of dark energy in fractal cosmological model using specific Hubble parameter

The main objective of this article is to study the fractal FRW cosmological model consisting two forms of dark energy. We studied behavior of the universe in a fractal framework using dark energy accommodated in our universe. The solution of field equations are obtained by using Hubble parameter for transit scale factor H(z)=ϵaδ+λ . We have obtained the best fitting values of the model parameters ϵ,δ and λ by constraining our model with latest Hubble and SNe-Ia data sets . Finally we perform state-finder diagnosis and observe that obtained model close to standard ΛCDM model.

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来源期刊
New Astronomy
New Astronomy 地学天文-天文与天体物理
CiteScore
4.00
自引率
10.00%
发文量
109
审稿时长
13.6 weeks
期刊介绍: New Astronomy publishes articles in all fields of astronomy and astrophysics, with a particular focus on computational astronomy: mathematical and astronomy techniques and methodology, simulations, modelling and numerical results and computational techniques in instrumentation. New Astronomy includes full length research articles and review articles. The journal covers solar, stellar, galactic and extragalactic astronomy and astrophysics. It reports on original research in all wavelength bands, ranging from radio to gamma-ray.
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