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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
general
A bimodal burst energy distribution of a repeating fast radio burst source
Nature, Volume 598, No. 7880, Year 2021
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Description
The event rate, energy distribution and time-domain behaviour of repeating fast radio bursts (FRBs) contain essential information regarding their physical nature and central engine, which are as yet unknown1,2. As the first precisely localized source, FRB 121102 (refs. 3–5) has been extensively observed and shows non-Poisson clustering of bursts over time and a power-law energy distribution6–8. However, the extent of the energy distribution towards the fainter end was not known. Here we report the detection of 1,652 independent bursts with a peak burst rate of 122 h−1, in 59.5 hours spanning 47 days. A peak in the isotropic equivalent energy distribution is found to be approximately 4.8 × 1037 erg at 1.25 GHz, below which the detection of bursts is suppressed. The burst energy distribution is bimodal, and well characterized by a combination of a log-normal function and a generalized Cauchy function. The large number of bursts in hour-long spans allows sensitive periodicity searches between 1 ms and 1,000 s. The non-detection of any periodicity or quasi-periodicity poses challenges for models involving a single rotating compact object. The high burst rate also implies that FRBs must be generated with a high radiative efficiency, disfavouring emission mechanisms with large energy requirements or contrived triggering conditions. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
Authors & Co-Authors
Li, D. H.
China, Beijing
Chinese Academy of Sciences
China, Beijing
University of Chinese Academy of Sciences
Wang, Pei
China, Beijing
Chinese Academy of Sciences
Zhu, Weiwei
China, Beijing
Chinese Academy of Sciences
Zhang, Bing
United States, Las Vegas
University of Nevada, Las Vegas
Zhang, Xinxin
China, Beijing
Chinese Academy of Sciences
Duan, Ran
China, Beijing
Chinese Academy of Sciences
Zhang, Yongkun
China, Beijing
Chinese Academy of Sciences
China, Beijing
University of Chinese Academy of Sciences
Feng, Yi
China, Beijing
Chinese Academy of Sciences
China, Beijing
University of Chinese Academy of Sciences
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Tang, Ningyu
China, Beijing
Chinese Academy of Sciences
China, Wuhu
Anhui Normal University
Chatterjee, S.
United States, Ithaca
Cornell University
Cordes, James M.
United States, Ithaca
Cornell University
Cruces, Marilyn
Germany, Bonn
Max Planck Institute for Radio Astronomy
Dai, Shi
China, Beijing
Chinese Academy of Sciences
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Australia, Penrith
Western Sydney University
Gajjar, Vishal
United States, Berkeley
University of California, Berkeley
Hobbs, George B.
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Jin, Chengjin
China, Beijing
Chinese Academy of Sciences
Kramer, Michael
Germany, Bonn
Max Planck Institute for Radio Astronomy
Lorimer, Duncan R.
United States, Morgantown
West Virginia University
Miao, Chenchen
China, Beijing
Chinese Academy of Sciences
China, Beijing
University of Chinese Academy of Sciences
Niu, Chenghui
China, Beijing
Chinese Academy of Sciences
Niu, Jiarui
China, Beijing
Chinese Academy of Sciences
China, Beijing
University of Chinese Academy of Sciences
Pan, Zhichen
China, Beijing
Chinese Academy of Sciences
Qian, Lei
China, Beijing
Chinese Academy of Sciences
Spitler, Laura G.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Werthimer, Dan J.
United States, Berkeley
University of California, Berkeley
Zhang, Guoqiang
China, Nanjing
Nanjing University
Wang, Fayin
China, Nanjing
Nanjing University
China, Beijing
Ministry of Education of the People's Republic of China
Xie, Xiaoyao
China, Guiyang
Guizhou Normal University
Yue, Youling
China, Beijing
Chinese Academy of Sciences
Zhang, Lei
China, Beijing
Chinese Academy of Sciences
China, Wuhan
Wuhan University
Zhi, Qijun
China, Guiyang
Guizhou Normal University
Zhu, Yan
China, Beijing
Chinese Academy of Sciences
Statistics
Citations: 119
Authors: 32
Affiliations: 14
Identifiers
Doi:
10.1038/s41586-021-03878-5
ISSN:
00280836
Research Areas
Environmental