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, Jun Yang Key Laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences , Datun Road A20, Beijing 100012, China School of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Datun Road A20, Beijing 100049, China Search for other works by this author on: Oxford Academic Nan Jia Key Laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences , Datun Road A20, Beijing 100012, China School of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Datun Road A20, Beijing 100049, China Search for other works by this author on: Oxford Academic Erlin Qiao Key Laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences , Datun Road A20, Beijing 100012, China School of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Datun Road A20, Beijing 100049, China Search for other works by this author on: Oxford Academic Yujia Song Key Laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences , Datun Road A20, Beijing 100012, China School of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Datun Road A20, Beijing 100049, China Search for other works by this author on: Oxford Academic Lijun Gou Key Laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences , Datun Road A20, Beijing 100012, China School of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Datun Road A20, Beijing 100049, China E-mail: lgou@nao.cas.cn Search for other works by this author on: Oxford Academic
https://orcid.org/0009-0001-0703-2000 Monthly Notices of the Royal Astronomical Society, stae1561, https://doi.org/10.1093/mnras/stae1561
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25 June 2024
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Jun Yang, Nan Jia, Erlin Qiao, Yujia Song, Lijun Gou, Measuring the spin of black hole transient 4U 1543-47 Using Insight-HXMT, Monthly Notices of the Royal Astronomical Society, 2024;, stae1561, https://doi.org/10.1093/mnras/stae1561
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Abstract
We provided a comprehensive study of the properties of the black hole in the low-mass X-ray binary system 4U 1543-47, specifically focusing on the 2021 outburst (MJD 59380-59470). Using observations from the Insight-HXMT mission, we employed X-ray reflection fitting method and analyzed spectral data to estimate key black hole parameters. Through our investigation redbased on 6 out of the 52 available observations, we estimated the spin parameter of the black hole to be |$0.902_{-0.053}^{+0.054}$| and the inclination angle of the accretion disk to be |$28.91_{-1.24}^{+1.82}$| degrees (90% confidence limits, statistical only), then we discussed the influence of high luminosity. Based on the relxill series models are not suitable for thick disk scenario, and in comparison with findings from other studies, we propose that our estimation of the spin value may be exaggerated.
accretion, accretion disc, black hole physics, X-rays: binaries, stars: individual: 4U 1543 - 47
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© The Author(s) 2024. Published by Oxford University Press on behalf of Royal Astronomical Society.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
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