利用贝叶斯统计方法计算 T(d,n)4He 的天体物理反应速率和不确定性

IF 4.5 3区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Publications of the Astronomical Society of Australia Pub Date : 2024-03-13 DOI:10.1017/pasa.2024.15

Seyyed Soheil Esmaeili, Abbas Ghasemizad, Omid Naserghodsi

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引用次数: 0

摘要

贝叶斯统计方法是利用现有有限数据研究和计算所需数量的最佳方法之一，该方法最近已进入核天体物理学领域，可用于评估大爆炸核合成的天体物理 S 因子、截面以及核反应速率。本研究试图利用这种方法计算天体物理 S 因子和 T(d,n)4He（一种重要的天体物理反应）在低于电子斥力势垒的能量下的反应速率，为此，它使用了 R 软件，与非贝叶斯方法相比，该软件改进了上述反应速率的计算结果。

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Calculation of Astrophysical Reaction Rate and Uncertainty for T(d,n)4He using Bayesian Statistical Approach

One of the best methods to investigate and calculate a desired quantity using available limited data is the Bayesian statistical method, which has been recently entered the field of nuclear astrophysics and can be used to evaluate the astrophysical S-factors, the cross sections and, as a result, the nuclear reaction rates of Big Bang Nucleosynthesis. This study tries to calculate the astrophysical S-factor and the rate of reaction T(d,n)4He as an important astrophysical reaction with the help of this method in energies lower that electron repulsive barrier, and for this purpose, it uses the R-Software, which leads to improved results in comparison with the non-Bayesian methods for the mentioned reaction rate.

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来源期刊

Publications of the Astronomical Society of Australia 地学天文-天文与天体物理

CiteScore

5.90

自引率

9.50%

发文量

审稿时长

>12 weeks

期刊介绍： Publications of the Astronomical Society of Australia (PASA) publishes new and significant research in astronomy and astrophysics. PASA covers a wide range of topics within astronomy, including multi-wavelength observations, theoretical modelling, computational astronomy and visualisation. PASA also maintains its heritage of publishing results on southern hemisphere astronomy and on astronomy with Australian facilities. PASA publishes research papers, review papers and special series on topical issues, making use of expert international reviewers and an experienced Editorial Board. As an electronic-only journal, PASA publishes paper by paper, ensuring a rapid publication rate. There are no page charges. PASA''s Editorial Board approve a certain number of papers per year to be published Open Access without a publication fee.