Quasi-periodic oscillations of the X-ray burst from the magnetar SGR J1935+2154 and associated with the fast radio burst FRB 200428
Creators: name: Li, Xiaobo
name: Ge, Mingyu
name: Lin, Lin
name: Zhang, Shuang-Nan
name: Song, Liming
name: Cao, Xuelei
name: Zhang, Bing
name: Lu, Fangjun
name: Xu, Yupeng
name: Xiong, Shaolin
name: Tuo, Youli
name: Tan, Ying
name: Jiang, Weichun
name: Qu, Jinlu
name: Zhang, Shu
name: Wang, Lingjun
name: Wang, Jieshuang
name: Zhang, Binbin
name: Zhang, Peng
name: Li, Chengkui
name: Liu, Congzhan
name: Li, Tipei
name: Bu, Qingcui
name: Cai, Ce
name: Chen, Yong
name: Chen, Yupeng
name: Chang, Zhi
name: Chen, Li
name: Chen, Tianxian
name: Chen, Yibao
name: Cui, Weiwei
name: Du, Yuanyuan
name: Gao, Guanhua
name: Gao, He
name: Gu, Yudong
name: Guan, Ju
name: Guo, Chengcheng
name: Han, Dawei
name: Huang, Yue
name: Huo, Jia
name: Jia, Shumei
name: Jin, Jing
name: Kong, Lingda
name: Li, Bing
name: Li, Gang
name: Li, Wei
name: Li, Xian
name: Li, Xufang
name: Li, Zhengwei
name: Liang, Xiaohua
name: Liao, Jinyuan
name: Liu, Hexin
name: Liu, Hongwei
name: Liu, Xiaojing
name: Lu, Xuefeng
name: Luo, Qi
name: Luo, Tao
name: Ma, Binyuan
name: Ma, Ruican
name: Ma, Xiang
name: Meng, Bin
name: Nang, Yi
name: Nie, Jianyin
name: Ou, Ge
name: Ren, Xiaoqin
name: Sai, Na
name: Song, Xinying
name: Sun, Liang
name: Tao, Lian
name: Wang, Chen
name: Wang, Pengju
name: Wang, Wenshuai
name: Wang, Yusa
name: Wen, Xiangyang
name: Wu, Bobing
name: Wu, Baiyang
name: Wu, Mei
name: Xiao, Shuo
name: Yang, Sheng
name: Yang, Yanji
name: Yi, Qibin
name: Yin, Qianqing
name: You, Yuan
name: Yu, Wei
name: Zhang, Fan
name: Zhang, Hongmei
name: Zhang, Juan
name: Zhang, Wanchang
name: Zhang, Wei
name: Zhang, Yifei
name: Zhang, Yuanhang
name: Zhao, Haisheng
name: Zhao, Xiaofan
name: Zheng, Shijie
name: Zhou, Dengke
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: 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.
description: 17 pages, 13 figures, accepted for publication by ApJ. arXiv admin note: text overlap with arXiv:1212.1011 by other authors. text overlap with arXiv:1212.1011 by other authors