X射线的准周期振荡从Magnetar SGR J1935+2154爆发，并与快速无线电爆发FRB 200428相关联

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X射线的准周期振荡从Magnetar SGR J1935+2154爆发，并与快速无线电爆发FRB 200428相关联

Quasi-periodic oscillations of the X-ray burst from the magnetar SGR J1935+2154 and associated with the fast radio burst FRB 200428

论文作者

Li, Xiaobo, Ge, Mingyu, Lin, Lin, Zhang, Shuang-Nan, Song, Liming, Cao, Xuelei, Zhang, Bing, Lu, Fangjun, Xu, Yupeng, Xiong, Shaolin, Tuo, Youli, Tan, Ying, Jiang, Weichun, Qu, Jinlu, Zhang, Shu, Wang, Lingjun, Wang, Jieshuang, Zhang, Binbin, Zhang, Peng, Li, Chengkui, Liu, Congzhan, Li, Tipei, Bu, Qingcui, Cai, Ce, Chen, Yong, Chen, Yupeng, Chang, Zhi, Chen, Li, Chen, Tianxian, Chen, Yibao, Cui, Weiwei, Du, Yuanyuan, Gao, Guanhua, Gao, He, Gu, Yudong, Guan, Ju, Guo, Chengcheng, Han, Dawei, Huang, Yue, Huo, Jia, Jia, Shumei, Jin, Jing, Kong, Lingda, Li, Bing, Li, Gang, Li, Wei, Li, Xian, Li, Xufang, Li, Zhengwei, Liang, Xiaohua, Liao, Jinyuan, Liu, Hexin, Liu, Hongwei, Liu, Xiaojing, Lu, Xuefeng, Luo, Qi, Luo, Tao, Ma, Binyuan, Ma, Ruican, Ma, Xiang, Meng, Bin, Nang, Yi, Nie, Jianyin, Ou, Ge, Ren, Xiaoqin, Sai, Na, Song, Xinying, Sun, Liang, Tao, Lian, Wang, Chen, Wang, Pengju, Wang, Wenshuai, Wang, Yusa, Wen, Xiangyang, Wu, Bobing, Wu, Baiyang, Wu, Mei, Xiao, Shuo, Yang, Sheng, Yang, Yanji, Yi, Qibin, Yin, Qianqing, You, Yuan, Yu, Wei, Zhang, Fan, Zhang, Hongmei, Zhang, Juan, Zhang, Wanchang, Zhang, Wei, Zhang, Yifei, Zhang, Yuanhang, Zhao, Haisheng, Zhao, Xiaofan, Zheng, Shijie, Zhou, Dengke

论文摘要

快速无线电爆发（FRB）的起源和机制是宇宙学距离的短无线电脉冲，自发现以来一直是一个主要难题。我们报告了X射线中的40 Hz的强极周期振荡（QPO）从Magnetar SGR J1935+2154爆发中，并且与FRB 200428相关，并通过硬X射线调制望远镜（Insight-HXMT）显着检测到Konus-Wind数据。很少检测到来自磁力爆发的QPO。我们在此报告的QPO检测的3.4 Sigma（P值为2.9E-4）检测显示，从磁铁中观察到的最强的QPO信号（除了一些非常罕见的巨型耀斑之外），这使得这种X射线爆发在磁场突发中独特。与两个FRB脉冲一致的两个X射线尖峰也是QPO的峰之一。我们的结果表明，至少某些FRB与中子星的强振荡过程有关。我们还表明，如果仅在X射线爆发的时间序列的一小部分中存在QPO，我们可能会高估QPO信号的重要性，并低估QPO参数的误差。

The origin(s) and mechanism(s) of fast radio bursts (FRBs), which are short radio pulses from cosmological distances, have remained a major puzzle since their discovery. We report a strong Quasi-Periodic Oscillation(QPO) of 40 Hz in the X-ray burst from the magnetar SGR J1935+2154 and associated with FRB 200428, significantly detected with the Hard X-ray Modulation Telescope (Insight-HXMT) and also hinted by the Konus-Wind data. QPOs from magnetar bursts have only been rarely detected; our 3.4 sigma (p-value is 2.9e-4) detection of the QPO reported here reveals the strongest QPO signal observed from magnetars (except in some very rare giant flares), making this X-ray burst unique among magnetar bursts. The two X-ray spikes coinciding with the two FRB pulses are also among the peaks of the QPO. Our results suggest that at least some FRBs are related to strong oscillation processes of neutron stars. We also show that we may overestimate the significance of the QPO signal and underestimate the errors of QPO parameters if QPO exists only in a fraction of the time series of a X-ray burst which we use to calculate the Leahy-normalized periodogram.

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