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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
general
No pulsed radio emission during a bursting phase of a Galactic magnetar
Nature, Volume 587, No. 7832, Year 2020
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Description
Fast radio bursts (FRBs) are millisecond-duration radio transients of unknown physical origin observed at extragalactic distances1–3. It has long been speculated that magnetars are the engine powering repeating bursts from FRB sources4–13, but no convincing evidence has been collected so far14. Recently, the Galactic magnetar SRG 1935+2154 entered an active phase by emitting intense soft γ-ray bursts15. 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 γ-ray/hard-X-ray flare18–21. 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-γ-ray repeater (SGR) bursts were detected in γ-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. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
Authors & Co-Authors
Lin, Lin
China, Beijing
Beijing Normal University
Zhang, Chunfeng
China, Beijing
Peking University
China, Beijing
Chinese Academy of Sciences
Wang, Pei
China, Beijing
Chinese Academy of Sciences
Han, Jinlin
China, Beijing
Chinese Academy of Sciences
Jiang, Jinchen
China, Beijing
Peking University
China, Beijing
Chinese Academy of Sciences
Jiang, Peng
China, Beijing
Chinese Academy of Sciences
Lee, Kejia
China, Beijing
Chinese Academy of Sciences
China, Beijing
Peking University
Li, D. H.
China, Beijing
Chinese Academy of Sciences
Men, Yunpeng
China, Beijing
Peking University
China, Beijing
Chinese Academy of Sciences
Miao, Chenchen
China, Beijing
Chinese Academy of Sciences
Niu, Chenghui
China, Beijing
Chinese Academy of Sciences
Niu, Jiarui
China, Beijing
Chinese Academy of Sciences
Wang, Bojun
China, Beijing
Peking University
China, Beijing
Chinese Academy of Sciences
Xu, Heng
China, Beijing
Peking University
China, Beijing
Chinese Academy of Sciences
Xu, Jiangwei
China, Beijing
Peking University
China, Beijing
Chinese Academy of Sciences
Yang, Yuanpei
China, Kunming
Yunnan University
Zhang, Bing
United States, Las Vegas
University of Nevada, Las Vegas
Zhou, Dejiang
China, Beijing
Chinese Academy of Sciences
Zhu, Weiwei
China, Beijing
Chinese Academy of Sciences
Castro-Tirado, A. J.
Spain, Granada
Instituto de Astrofísica de Andalucía - Csic
Spain, Malaga
Universidad de Málaga
Dai, Zigao
China, Nanjing
Nanjing University
China, Beijing
Ministry of Education of the People's Republic of China
Ge, Mingyu
China, Beijing
Chinese Academy of Sciences
Hu, Youdong
Spain, Granada
Instituto de Astrofísica de Andalucía - Csic
Spain, Granada
Universidad de Granada
Li, Chengkui
China, Beijing
Chinese Academy of Sciences
Jia, Shumei
China, Beijing
Chinese Academy of Sciences
Querel, Richard R.
New Zealand, Auckland
National Institute of Water and Atmospheric Research
Shao, Lang
China, Shijiazhuang
Hebei Normal University
Wang, Fayin
China, Nanjing
Nanjing University
China, Beijing
Ministry of Education of the People's Republic of China
Wu, Xuefeng
China, Beijing
Chinese Academy of Sciences
Xiong, Shaoling Lin
China, Beijing
Chinese Academy of Sciences
Xu, Renxin
China, Beijing
Peking University
Zhang, Guoqiang
China, Nanjing
Nanjing University
Zhang, Shuangnan
China, Beijing
Chinese Academy of Sciences
Zou, Jinhang
China, Shijiazhuang
Hebei Normal University
Statistics
Citations: 95
Authors: 34
Affiliations: 13
Identifiers
Doi:
10.1038/s41586-020-2839-y
ISSN:
00280836
Research Areas
Cancer
Environmental