Statistical Properties of X-Ray Bursts from SGR J1935+2154 Detected by Insight-HXMT

Author:

Zhang Wen-Long,Li Xiu-Juan,Yang Yu-Peng,Yi Shuang-Xi,Li Cheng-Kui,Tang Qing-WenORCID,Qin Ying,Wang Fa-Yin

Abstract

Abstract As one class of the most important objects in the universe, magnetars can produce a lot of different frequency bursts including X-ray bursts. In Cai et al., 75 X-ray bursts produced by magnetar SGR J1935+2154 during an active period in 2020 are published, including the duration and net photon counts of each burst, and waiting time based on the trigger time difference. In this paper, we utilize the power-law model, dN ( x ) / dx ( x + x 0 ) α x , to fit the cumulative distributions of these parameters. It can be found that all the cumulative distributions can be well fitted, which can be interpreted by a self-organizing criticality theory. Furthermore, we check whether this phenomenon still exists in different energy bands and find that there is no obvious evolution. These findings further confirm that the X-ray bursts from magnetars are likely to be generated by some self-organizing critical process, which can be explained by a possible magnetic reconnection scenario in magnetars.

Publisher

IOP Publishing

Subject

Space and Planetary Science,Astronomy and Astrophysics

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Scale-invariant Features of X-Ray Bursts from SGR J1935+2154 Detected by Insight-HXMT;Publications of the Astronomical Society of the Pacific;2024-08-01

2. The self-organized criticality behaviours of two new parameters in SGR J1935+2154;Monthly Notices of the Royal Astronomical Society;2024-01-16

3. Insight-HXMT Research Progress Since 2023;Chinese Journal of Space Science;2024

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