Quasi-periodic Oscillations of the X-Ray Burst from the Magnetar SGR J1935-2154 and Associated with the Fast Radio Burst FRB 200428

被引：30

作者：

Li, Xiaobo ^{[1
]}

Ge, Mingyu ^{[1
]}

Lin, Lin ^{[2
]}

Zhang, Shuang-Nan ^{[1
,3
]}

Song, Liming ^{[1
,3
]}

Cao, Xuelei ^{[1
]}

Zhang, Bing ^{[4
]}

Lu, Fangjun ^{[1
,5
,6
]}

Xu, Yupeng ^{[1
,3
]}

Xiong, Shaolin ^{[1
,3
]}

Tuo, Youli ^{[1
]}

Tan, Ying ^{[1
]}

Jiang, Weichun ^{[1
]}

Qu, Jinlu ^{[1
]}

Zhang, Shu ^{[1
]}

Wang, Lingjun ^{[1
]}

Wang, Jieshuang ^{[7
]}

Zhang, Binbin ^{[8
]}

Zhang, Peng ^{[1
]}

Li, Chengkui ^{[1
]}

Liu, Congzhan ^{[1
]}

Li, Tipei ^{[1
,3
,9
]}

Bu, Qingcui ^{[1
]}

Cai, Ce ^{[1
]}

Chen, Yong ^{[1
]}

Chen, Yupeng ^{[1
]}

Chang, Zhi ^{[1
]}

Chen, Li ^{[2
]}

Chen, Tianxiang ^{[1
]}

Chen, Yibao ^{[10
]}

Cui, Weiwei ^{[1
]}

Du, Yuanyuan ^{[1
]}

Gao, Guanhua ^{[1
,3
]}

Gao, He ^{[1
,3
]}

Gu, Yudong ^{[1
]}

Guan, Ju ^{[1
]}

Guo, Chengcheng ^{[1
,3
]}

Han, Dawei ^{[1
]}

Huang, Yue ^{[1
]}

Huo, Jia ^{[1
]}

Jia, Shumei ^{[1
]}

Jin, Jing ^{[1
]}

Kong, Lingda ^{[1
,3
]}

Li, Bing ^{[1
]}

Li, Gang ^{[1
]}

Li, Wei ^{[1
]}

Li, Xian ^{[1
]}

Li, Xufang ^{[1
]}

Li, Zhengwei ^{[1
]}

Liang, Xiaohua ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, 19B Yuquan Rd, Beijing 100049, Peoples R China

[2] Beijing Normal Univ, Dept Astron, Beijing 100088, Peoples R China

[3] Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] Univ Nevad, Dept Phys & Astron, Las Vegas, NV 89154 USA

[5] Xiangtan Univ, Key Lab Stellar & Interstellar Phys, Xiangtan 411105, Hunan, Peoples R China

[6] Xiangtan Univ, Sch Phys & Optoelect, Xiangtan 411105, Hunan, Peoples R China

[7] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany

[8] Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China

[9] Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China

[10] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[11] Chinese Acad Sci, Inst High Energy Phys, Comp Div, 19B Yuquan Rd, Beijing 100049, Peoples R China

[12] Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100012, Peoples R China

来源：

ASTROPHYSICAL JOURNAL | 2022年 / 931卷 / 01期

基金：

中国国家自然科学基金;

关键词：

SHORT RECURRING BURSTS; TIME-SERIES ANALYSIS; DISCOVERY;

D O I：

10.3847/1538-4357/ac6587

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 similar to 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 at 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 an X-ray burst that we use to calculate the Leahy-normalized periodogram.

引用

页数：11

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