A bimodal burst energy distribution of a repeating fast radio burst source

doi:10.1038/s41586-021-03878-5

NAOC Open IR

	A bimodal burst energy distribution of a repeating fast radio burst source
	Li, D.1,2 ; Wang, P.1; Zhu, W. W.1; Zhang, B.3; Zhang, X. X.1; Duan, R.1; Zhang, Y. K.1,2; Feng, Y.1,2,4; Tang, N. Y.1,5; Chatterjee, S.6,7; Cordes, J. M.6,7; Cruces, M.8; Dai, S.1,4,9; Gajjar, V 10; Hobbs, G.4; Jin, C.1; Kramer, M.8; Lorimer, D. R.11,12; Miao, C. C.1,2; Niu, C. H.1; Niu, J. R.1,2; Pan, Z. C.1; Qian, L.1; Spitler, L.8; Werthimer, D.10; Zhang, G. Q.13; Wang, F. Y.13,14; Xie, X. Y.15; Yue, Y. L.1; Zhang, L.1,16; Zhi, Q. J.15,17; Zhu, Y.1
	2021-10-14
Source Publication	NATURE
ISSN	0028-0836
Volume	598 Issue:7880 Pages:267-+
Abstract	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 unknown(1,2). 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 distribution(6-8). 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 x 10(37) 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. For FRB 121102, 1,652 burst events are detected over 47 days, with a peak burst rate of 122 per hour, a bimodal burst rate energy distribution, and no periodicity or quasi-periodicity.
DOI	10.1038/s41586-021-03878-5
WOS Keyword	SYNCHROTRON MASER EMISSION ; PULSES ; MODEL
Language	英语
WOS Research Area	Science & Technology - Other Topics
WOS Subject	Multidisciplinary Sciences
WOS ID	WOS:000707158300008
Publisher	NATURE PORTFOLIO
Citation statistics
Document Type	期刊论文
Identifier	http://ir.bao.ac.cn/handle/114a11/74523
Collection	中国科学院国家天文台
Corresponding Author	Li, D.; Zhang, B.
Affiliation	1.Chinese Acad Sci, CAS Key Lab FAST, NAOC, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA 4.CSIRO Astron & Space Sci, Epping, NSW, Australia 5.Anhui Normal Univ, Dept Phys, Wuhu, Peoples R China 6.Cornell Univ, Cornell Ctr Astrophys & Planetary Sci, Ithaca, NY USA 7.Cornell Univ, Dept Astron, Ithaca, NY 14853 USA 8.Max Pranck Inst Radioastron, Bonn, Germany 9.Western Sydney Univ, Penrith, NSW, Australia 10.Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA 11.West Virginia Univ, Dept Phys & Astron, Morgantown, WV USA 12.West Virginia Univ, Ctr Gravitat Waves & Cosmol, Morgantown, WV USA 13.Nanjing Univ, Sch Astron & Space Sci, Nanjing, Peoples R China 14.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing, Peoples R China 15.Guizhou Normal Univ, Guiyang, Peoples R China 16.Wuhan Univ, Sch Phys & Technol, Wuhan, Peoples R China 17.Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang, Peoples R China
Recommended Citation GB/T 7714	Li, D.,Wang, P.,Zhu, W. W.,et al. A bimodal burst energy distribution of a repeating fast radio burst source[J]. NATURE,2021,598(7880):267-+.
APA	Li, D..,Wang, P..,Zhu, W. W..,Zhang, B..,Zhang, X. X..,...&Zhu, Y..(2021).A bimodal burst energy distribution of a repeating fast radio burst source.NATURE,598(7880),267-+.
MLA	Li, D.,et al."A bimodal burst energy distribution of a repeating fast radio burst source".NATURE 598.7880(2021):267-+.

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