No pulsed radio emission during a bursting phase of a Galactic magnetar
Lin, L.1; Zhang, C. F.2,3; Wang, P.3; Gao, H.1; Guan, X.3; Han, J. L.3,4; Jiang, J. C.2,3; Jiang, P.3; Lee, K. J.3,5; Li, D.3,4; Men, Y. P.2,3; Miao, C. C.3; Niu, C. H.3; Niu, J. R.3; Sun, C.3; Wang, B. J.2,3; Wang, Z. L.3; Xu, H.2,3; Xu, J. L.3; Xu, J. W.2,3; Yang, Y. H.6; Yang, Y. P.7; Yu, W.8; Zhang, B.9; Zhang, B. -B.6,9,10; Zhou, D. J.3,4; Zhu, W. W.3; Castro-Tirado, A. J.11,12; Dai, Z. G.6,10; Ge, M. Y.13; Hu, Y. D.11,14; Li, C. K.13; Li, Y.4,15; Li, Z.1; Liang, E. W.16; Jia, S. M.13; Querel, R.17; Shao, L.18; Wang, F. Y.6,10; Wang, X. G.16; Wu, X. F.15; Xiong, S. L.13; Xu, R. X.2,5; Yang, Y. -S.6; Zhang, G. Q.6; Zhang, S. N.3,4,13; Zheng, T. C.16; Zou, J. -H.18
Source PublicationNATURE
AbstractFast radio bursts (FRBs) are millisecond-duration radio transients of unknown physical origin observed at extragalactic distances(1-3). It has long been speculated that magnetars are the engine powering repeating bursts from FRB sources(4-13), but no convincing evidence has been collected so far(14). Recently, the Galactic magnetar SRG 1935+2154 entered an active phase by emitting intense soft gamma-ray bursts(15). One FRB-like event with two peaks (FRB 200428) and a luminosity slightly lower than the faintest extragalactic FRBs was detected from the source, in association with a soft gamma-ray/hard-X-ray flare(18-21). Here we report an eight-hour targeted radio observational campaign comprising four sessions and assisted by multi-wavelength (optical and hard-X-ray) data. During the third session, 29 soft-gamma-ray repeater (SGR) bursts were detected in gamma-ray energies. Throughout the observing period, we detected no single dispersed pulsed emission coincident with the arrivals of SGR bursts, but unfortunately we were not observing when the FRB was detected. The non-detection places a fluence upper limit that is eight orders of magnitude lower than the fluence of FRB 200428. Our results suggest that FRB-SGR burst associations are rare. FRBs may be highly relativistic and geometrically beamed, or FRB-like events associated with SGR bursts may have narrow spectra and characteristic frequencies outside the observed band. It is also possible that the physical conditions required to achieve coherent radiation in SGR bursts are difficult to satisfy, and that only under extreme conditions could an FRB be associated with an SGR burst. An 8-hour radio observational campaign of the Galactic magnetar SGR 1915+2154, assisted by multi-wavelength data, indicates that associations between fast radio bursts and soft gamma-ray bursts are rare.
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000587009600009
Citation statistics
Document Type期刊论文
Corresponding AuthorLee, K. J.; Li, D.; Zhang, B.
Affiliation1.Beijing Normal Univ, Dept Astron, Beijing, Peoples R China
2.Peking Univ, Dept Astron, Beijing, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Chinese Acad Sci, Beijing, Peoples R China
5.Peking Univ, Kavli Inst Astron & Astrophys, Beijing, Peoples R China
6.Nanjing Univ, Sch Astron & Space Sci, Nanjing, Peoples R China
7.Yunnan Univ, South Western Inst Astron Res, Kunming, Yunnan, Peoples R China
8.Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China
9.Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA
10.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing, Peoples R China
11.Inst Astrofis Andalucia IAA CSIC, Granada, Spain
12.Univ Malaga, Dept Ingn Sistemas & Automat, Escuela Ingn, Malaga, Spain
13.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing, Peoples R China
14.Univ Granada, Fac Ciencias, Granada, Spain
15.Chinese Acad Sci, Purple Mt Observ, Nanjing, Peoples R China
16.Guangxi Univ, Sch Phys Sci & Technol, Guangxi Key Lab Relativist Astrophys, Nanning, Peoples R China
17.Natl Inst Water & Atmospher Res NIWA, Lauder, New Zealand
18.Hebei Normal Univ, Coll Phys, Shijiazhuang, Hebei, Peoples R China
Recommended Citation
GB/T 7714
Lin, L.,Zhang, C. F.,Wang, P.,et al. No pulsed radio emission during a bursting phase of a Galactic magnetar[J]. NATURE,2020,587(7832):63-+.
APA Lin, L..,Zhang, C. F..,Wang, P..,Gao, H..,Guan, X..,...&Zou, J. -H..(2020).No pulsed radio emission during a bursting phase of a Galactic magnetar.NATURE,587(7832),63-+.
MLA Lin, L.,et al."No pulsed radio emission during a bursting phase of a Galactic magnetar".NATURE 587.7832(2020):63-+.
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