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arXiv 2304.01035astro-ph.HEastro-ph.IMcs.DC
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复现NICER对PSR J0030+0451观测的结果

Reproducing the results for NICER observation of PSR J0030+0451

Chaitanya Afle, Patrick R. Miles, Silvina Caino-Lores, Collin D. Capano, Ingo Tews, Karan Vahi, Ewa Deelman, Michela Taufer, Duncan A. Brown

AI总结:

本研究利用开源软件X-PSI和公开数据,在统计误差内复现了NICER对PSR J0030+0451的质量半径测量结果,验证了原结果的稳健性,并提供容器化环境助力第三方复现。

摘要:

NASA的中子星内部成分探测器(Neutron Star Interior Composition Explorer,NICER)于2018年观测了脉冲星PSR J0030+0451的X射线辐射。Riley等人利用X射线数据的脉冲轮廓建模,通过贝叶斯方法测量了该中子星的质量和半径。本文使用开源软件X-PSI和公开数据,在预期的统计误差范围内复现了他们的结果。我们指出了复现过程中遇到的挑战,并证明通过更改半径的先验分布和采样器配置,该分析可以被复现并用于未来的研究。我们发现质量和半径的测量结果没有显著变化,表明原始结果对这些更改具有稳健性。最后,我们提供了一个容器化的工作环境,以方便第三方利用NICER观测数据复现PSR J0030+0451的质量和半径测量。

英文摘要:

NASA's Neutron Star Interior Composition Explorer (NICER) observed X-ray emission from the pulsar PSR J0030+0451 in 2018. Riley et al. reported Bayesian parameter measurements of the mass and the star's radius using pulse-profile modeling of the X-ray data. This paper reproduces their result using the open-source software X-PSI and publicly available data within expected statistical errors. We note the challenges we faced in reproducing the results and demonstrate that the analysis can be reproduced and reused in future works by changing the prior distribution for the radius and the sampler configuration. We find no significant change in the measurement of the mass and radius, demonstrating that the original result is robust to these changes. Finally, we provide a containerized working environment that facilitates third-party reproduction of the measurements of mass and radius of PSR J0030+0451 using the NICER observations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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