Accès ouvert déclaré
2020
preprint
Insight-HXMT insight into switch of the accretion mode: the case of the X-ray pulsar 4U 1901+03
Y. L. Tuo, Long Ji, Sergey S. Tsygankov, T. Mihara, L. M. Song, M. Y. Ge, Armin Nabizadeh, Lian Tao, Jin‐Lu Qu, Yupei Zhang, Shuo Zhang, S. N. Zhang, Qingcui Bu, Lili Chen, Y. P. Xu, X. L. Cao, Y. Chen, Congzhan Liu, Ce Cai, Zhi Chang, Gang Chen, Tianxiang Chen, Y. B. Chen, Y. P. Chen, Wei Cui, Jinsong Deng, Yongwei Dong, Yong Du, M. X. Fu, G. H. Gao, Hailin Gao, M. Gao, Yun-Jun Gu, Ju Guan, Chengcheng Guo, D. W. Han, Y. Huang, J. Huo, S. M. Jia, Luhua Jiang, Weichun Jiang, Jing Jin, Liang Kong, Bing Li, Cheng-Kui Li, Gang Li, M. S. Li, T. P. Li, Wenya Li, Xia Li, X. B. Li, X. F. Li, Yong Li, Zhi Li, X. H. Liang, J. Y. Liao, Bai-Sheng Liu, Gang Liu, H. W. Liu, Xi Liu, Y. N. Liu, Bo Lü, F. J. Lu, Xiao-Meng Lu, Q. Luo, Tao Luo, Xiang Ma, Bin Meng, Yi Nang, J. Y. Nie, G. Ou, Na Sai, Rongshuo Shang, X. Y. Song, Luming Sun, Y. H. Tan, Chun Wang, G. F. Wang, Juan Wang, W. S. Wang, Yutao Wang, X. Y. Wen, Bai-Yang Wu, Bobing Wu, Mengtao Wu, Guang-Cheng Xiao, Shuo Xiao, Shi‐Yin Xiong, Yi-Jung Yang, Sheng Yang, Qiyun Yi, Qian-Qing Yin, Yuan You, A. M. Zhang, Chengmin Zhang, Fan Zhang, H. M. Zhang, Jie Zhang, Tiandong Zhang, W. Zhang, Wang Zhang, W. Z. Zhang, Yifei Zhang, Yiping Zhang, Y. H. Zhang, Zhi-Bin Zhang, Z. L. Zhang, Hai-Hui Zhao, Xiao-Yun Zhao, S. J. Zheng, Yuantian Zheng, D. K. Zhou, Jing Zhou, Yuxuan Zhu, R. L. Zhuang
3Citations signalées, ce qui n’est pas une note de qualité
0Institutions déclarées
0Pays d’affiliation déclarés
Le résumé fourni par la source
We use the In data collected during the 2019 outburst from X-ray pulsar 4U 1901+03 to complement the orbital parameters reported by Fermi/GBM. Using the Insight-HXMT, we examine the correlation between the derivative of the intrinsic spin frequency and bolometric flux based on accretion torque models. It was found that the pulse profiles significantly evolve during the outburst. The existence of two types of the profile's pattern discovered in the Insight-HXMT data indicates that this source experienced transition between a super-critical and a sub-critical accretion regime during its 2019 outburst. Based on the evolution of the pulse profiles and the torque model, we derive the distance to 4U 1901+03 as 12.4+-0.2 kpc.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
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Les sujets associés
Astrophysical Phenomena and ObservationsPulsars and Gravitational Waves ResearchGamma-ray bursts and supernovae