HXMT identification of a non-thermal X-ray burst from SGR J1935+2154 and with FRB 200428

被引：301

作者：

Li, C. K. ^{[1
]}

Lin, L. ^{[2
]}

Xiong, S. L. ^{[1
]}

Ge, M. Y. ^{[1
]}

Li, X. B. ^{[1
]}

Li, T. P. ^{[1
,3
,4
]}

Lu, F. J. ^{[1
]}

Zhang, S. N. ^{[1
,3
]}

Tuo, Y. L. ^{[1
,3
]}

Nang, Y. ^{[1
,3
]}

Zhang, B. ^{[5
]}

Xiao, S. ^{[1
,3
]}

Chen, Y. ^{[1
]}

Song, L. M. ^{[1
,3
]}

Xu, Y. P. ^{[1
,3
]}

Liu, C. Z. ^{[1
]}

Jia, S. M. ^{[1
]}

Cao, X. L. ^{[1
,3
]}

Qu, J. L. ^{[1
]}

Zhang, S. ^{[1
]}

Gu, Y. D. ^{[1
,6
]}

Liao, J. Y. ^{[1
]}

Zhao, X. F. ^{[1
,3
]}

Tan, Y. ^{[1
]}

Nie, J. Y. ^{[1
]}

Zhao, H. S. ^{[1
]}

Zheng, S. J. ^{[1
]}

Zheng, Y. G. ^{[1
,7
]}

Luo, Q. ^{[1
,3
]}

Cai, C. ^{[1
,3
]}

Li, B. ^{[1
]}

Xue, W. ^{[1
,3
]}

Bu, Q. C. ^{[1
,3
,8
]}

Chang, Z. ^{[1
]}

Chen, G. ^{[9
]}

Chen, L. ^{[2
]}

Chen, T. X. ^{[1
]}

Chen, Y. B. ^{[10
]}

Chen, Y. P. ^{[1
]}

Cui, W. ^{[4
]}

Cui, W. W. ^{[1
]}

Deng, J. K. ^{[11
]}

Dong, Y. W. ^{[1
]}

Du, Y. Y. ^{[1
]}

Fu, M. X. ^{[11
]}

Gao, G. H. ^{[1
,3
]}

Gao, H. ^{[1
,3
]}

Gao, M. ^{[1
]}

Gu, Y. D. ^{[1
,6
]}

Guan, J. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing, Peoples R China

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

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

[4] Tsinghua Univ, Dept Astron, Beijing, Peoples R China

[5] Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA

[6] Chinese Acad Sci, Technol & Engn Ctr Space Utilizat, Beijing, Peoples R China

[7] Hebei Univ, Coll Phys Sci & Technol, Baoding, Peoples R China

[8] Eberhard Karls Univ Tubingen, Kepler Ctr Astro & Particle Phys, Inst Astron & Astrophys, Tubingen, Germany

[9] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China

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

[11] Tsinghua Univ, Dept Engn Phys, Beijing, Peoples R China

[12] Chinese Acad Sci, Inst High Energy Phys, Comp Div, Beijing, Peoples R China

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

[14] Xiangtan Univ, Sch Phys & Optoelect, Xiangtan, Peoples R China

[15] Jilin Univ, Coll Phys, Changchun, Peoples R China

来源：

NATURE ASTRONOMY | 2021年 / 5卷 / 04期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1038/s41550-021-01302-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Fast radio bursts (FRBs) are short pulses observed in the radio band from cosmological distances(1). One class of models invokes soft gamma-ray repeaters (SGRs), or magnetars, as the sources of FRBs(2). Some radio pulses have been observed from some magnetars(3), but no FRB-like events have been detected in association with any magnetar burst, including one giant flare(4). Recently, a pair of FRB-like bursts (termed FRB 200428) separated by 29 milliseconds were detected from the general direction of the Galactic magnetar SGR J1935+2154 (refs. (5,6)). Here, we report the detection of a non-thermal X-ray burst in the 1-250 keV energy band with the Insight-HXMT satellite(7), which we identify as having been emitted from SGR J1935+2154. The burst showed two hard peaks with a separation of 34 milliseconds, broadly consistent with that of the two bursts in FRB 200428. The delay time between the double radio peak and the X-ray peaks is about 8.62 s, fully consistent with the dispersion delay of FRB 200428. We thus identify the non-thermal X-ray burst to be associated with FRB 200428, whose high-energy counterpart is the two hard X-ray peaks. Our results suggest that the non-thermal X-ray burst and FRB 200428 share the same physical origin in an explosive event from SGR J1935+2154.

引用

页码：378 / 384

页数：7

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