NAOC Open IR
Energy and Waiting Time Distributions of FRB 121102 Observed by FAST
Zhang, G. Q.1; Wang, P.2; Wu, Q.1; Wang, F. Y.1,3; Li, D.2,4,5; Dai, Z. G.1,6; Zhang, B.7
2021-10-01
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume920Issue:1Pages:11
AbstractThe energy and waiting time distributions are important properties for understanding the physical mechanism of repeating fast radio bursts (FRBs). Recently, the Five-hundred-meter Aperture Spherical radio Telescope (FAST; Nan et al. 2011; Li et al. 2018) detected the largest burst sample of FRB 121102, containing 1652 bursts Li et al. (2021a) We use this sample to investigate the energy and waiting time distributions. The energy count distribution dN/dE at the high-energy range (>10(38) erg) can be fitted with a single power-law function with an index of -1.86(-0.02)(+0.02), while the distribution at the low-energy range deviates from the power-law function. An interesting result of Li et al. (2021a) is that there is an apparent temporal gap between early bursts (occurring before MJD 58740) and late bursts (occurring after MJD 58740). We find that the energy distributions of high-energy bursts at different epochs are inconsistent. The power-law index is -1.70(-0.03)(+0.03) for early bursts and -2.60(-0.14)(+0.15) for late bursts. For bursts observed in a single day, a linear repetition pattern is found. We use the Weibull function to fit the distribution of waiting time of consecutive bursts. The shape parameter k = 0.72(-0.01)(+0.01) and the event rate r=736.43(-28.90)(+26.55) day(-1) are derived. I fthe waiting times with delta(t) < 28 s are excluded, the burst behavior can be described by a Poisson process. The best-fitting values of k are slightly different for low-energy (E < 1.58 x 10(38) erg) and high-energy (E > 1.58 x 10(38) erg) bursts.
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National SKA Program of China ; National SKA Program of China ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Project for Young Scientists in Basic Research ; CAS Project for Young Scientists in Basic Research ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National SKA Program of China ; National SKA Program of China ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Project for Young Scientists in Basic Research ; CAS Project for Young Scientists in Basic Research ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National SKA Program of China ; National SKA Program of China ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Project for Young Scientists in Basic Research ; CAS Project for Young Scientists in Basic Research ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National SKA Program of China ; National SKA Program of China ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Project for Young Scientists in Basic Research ; CAS Project for Young Scientists in Basic Research
DOI10.3847/2041-8213/ac2a3b
WOS KeywordFAST RADIO-BURST ; SELF-ORGANIZED CRITICALITY ; X-RAY FLARES ; STATISTICAL PROPERTIES ; GIANT PULSES ; TELESCOPE
Language英语
Funding ProjectNational Natural Science Foundation of China[11988101] ; National Natural Science Foundation of China[U1831207] ; National Natural Science Foundation of China[11833003] ; National Natural Science Foundation of China[11725313] ; National Natural Science Foundation of China[11690024] ; National Natural Science Foundation of China[12041303] ; National Natural Science Foundation of China[U2031117] ; Fundamental Research Funds for the Central Universities[0201-14380045] ; National Key Research and Development Program of China[2017YFA0402600] ; National SKA Program of China[2020SKA0120200] ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Youth Innovation Promotion Association CAS[2021055] ; CAS Project for Young Scientists in Basic Research[YSBR-006]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National SKA Program of China ; National SKA Program of China ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Project for Young Scientists in Basic Research ; CAS Project for Young Scientists in Basic Research ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National SKA Program of China ; National SKA Program of China ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Project for Young Scientists in Basic Research ; CAS Project for Young Scientists in Basic Research ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National SKA Program of China ; National SKA Program of China ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Project for Young Scientists in Basic Research ; CAS Project for Young Scientists in Basic Research ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National SKA Program of China ; National SKA Program of China ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Project for Young Scientists in Basic Research ; CAS Project for Young Scientists in Basic Research
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000705913300001
PublisherIOP Publishing Ltd
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/74791
Collection中国科学院国家天文台
Corresponding AuthorWang, F. Y.
Affiliation1.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Peoples R China
2.Chinese Acad Sci, CAS Key Lab FAST, NAOC, Beijing 100101, Peoples R China
3.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr, ZA-4000 Durban, South Africa
6.Univ Sci & Technol China, Sch Phys Sci, Dept Astron, Hefei 230026, Peoples R China
7.Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA
Recommended Citation
GB/T 7714
Zhang, G. Q.,Wang, P.,Wu, Q.,et al. Energy and Waiting Time Distributions of FRB 121102 Observed by FAST[J]. ASTROPHYSICAL JOURNAL LETTERS,2021,920(1):11.
APA Zhang, G. Q..,Wang, P..,Wu, Q..,Wang, F. Y..,Li, D..,...&Zhang, B..(2021).Energy and Waiting Time Distributions of FRB 121102 Observed by FAST.ASTROPHYSICAL JOURNAL LETTERS,920(1),11.
MLA Zhang, G. Q.,et al."Energy and Waiting Time Distributions of FRB 121102 Observed by FAST".ASTROPHYSICAL JOURNAL LETTERS 920.1(2021):11.
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