通过幂级数计算 N 维多面体

IF 0.5 4区 物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS Open Astronomy Pub Date : 2024-04-12 DOI:10.1515/astro-2022-0230
Mohamed I. Nouh, Mahmoud Taha, Ahmed Ahmed Ibrahim, Mohamed Abdel-Sabour
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引用次数: 0

摘要

多向方程(Lane-Emden[LE]方程)非常有价值,因为它们为恒星的内部结构、星际物质、分子云甚至旋臂提供了一个简单的解释,可以计算并用于估算各种物理参数。许多分析和数值方法都被用来求解多向性 LE 方程。数列展开法在许多科学领域发挥了重要作用,并在物理科学的许多分支中得到了应用。本研究使用数列展开法研究 N 维多向性(即板、圆柱和球体)。为了求解 LE 型方程,我们采用了基于加速序列展开(ASE)的计算方法。我们计算了 N 维多质体的几个模型。数值结果表明,ASE 与 N 维多质体的数值模型和分析模型之间具有良好的一致性。
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Computing N-dimensional polytrope via power series
Polytropic equations (Lane–Emden [LE] equations) are valuable because they offer a simple explanation for a star’s interior structure, interstellar matter, molecular clouds, and even spiral arms that can be calculated and used to estimate various physical parameters. Many analytical and numerical methods are used to solve the polytropic LE equation. The series expansion method played an essential role in many areas of science and has found application in many branches of physical science. This work uses the series expansion method to examine N-dimensional polytropes (i.e., slab, cylinder, and sphere). To solve LE-type equations, a computational method based on accelerated series expansion (ASE) is applied. We calculate several models for the N-dimensional polytropes. The numerical results show good agreement between the ASE and numerical and analytical models of the N-dimensional polytropes.
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来源期刊
Open Astronomy
Open Astronomy Physics and Astronomy-Astronomy and Astrophysics
CiteScore
1.30
自引率
14.30%
发文量
37
审稿时长
16 weeks
期刊介绍: The journal disseminates research in both observational and theoretical astronomy, astrophysics, solar physics, cosmology, galactic and extragalactic astronomy, high energy particles physics, planetary science, space science and astronomy-related astrobiology, presenting as well the surveys dedicated to astronomical history and education.
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