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A lower occurrence rate of bright X-ray flares in SN-GRBs than z < 1 GRBs: evidence of energy partitions?
Mu, Hui-Jun1; Gu, Wei-Min1,2; Mao JR(毛基荣)3,4,5; Liu, Tong1; Hou, Shu-Jin6; Lin, Da-Bin7; Wang, Junfeng1; Fang, Taotao1; Liang, En-Wei7
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2018-08-01
Volume478Issue:3Pages:3605-3613
DOI10.1093/mnras/sty1288
Contribution Rank第3完成单位
Indexed BySCI
KeywordGamma-ray Burst: General Supernovae: General
Abstract

The occurrence rates of bright X-ray flares in z < 1 gamma-ray bursts (GRBs) with or without observed supernovae (SNe) association were compared. Our Sample I: the z < 1 long GRBs (LGRBs) with SNe association (SN-GRBs) and with early Swift/X-Ray Telescope (XRT) observations, consists of 18 GRBs, among which only two GRBs have bright X-ray flares. Our Sample II: for comparison, all the z < 1 LGRBs without observed SNe association and with early Swift/XRT observations, consists of 45 GRBs, among which 16 GRBs present bright X-ray flares. Thus, the study indicates a lower occurrence rate of bright X-ray flares in Sample I (11.1 per cent) than in Sample II (35.6 per cent). In addition, if dim X-ray fluctuations are included as flares, then 16.7 per cent of Sample I and 55.6 per cent of Sample II are found to have flares, again showing the discrepancy between these two samples. We examined the physical origin of these bright X-ray flares and found that most of them are probably related to the central engine reactivity. To understand the discrepancy, we propose that such a lower occurrence rate of flares in the SN-GRB sample may hint at an energy partition among the GRB, SNe, and X-ray flares under a saturated energy budget of massive star explosion.

Funding ProjectNational Basic Research Program of China (973 Program)[2014CB845800] ; National Natural Science Foundation of China[11573023] ; National Natural Science Foundation of China[11473022] ; National Natural Science Foundation of China[11333004] ; National Natural Science Foundation of China[11673062] ; National Natural Science Foundation of China[11503011] ; National Natural Science Foundation of China[11773007] ; National Natural Science Foundation of China[11403005] ; National Natural Science Foundation of China[11473021] ; National Natural Science Foundation of China[11522323] ; National Natural Science Foundation of China[11525312] ; National Natural Science Foundation of China[11533003] ; National Natural Science Foundation of China[U1731239] ; Fundamental Research Funds for the Central Universities[20720160023]
Funding OrganizationNational Basic Research Program of China (973 Program)[2014CB845800] ; National Natural Science Foundation of China[11573023, 11473022, 11333004, 11673062, 11503011, 11773007, 11403005, 11473021, 11522323, 11525312, 11533003, U1731239] ; Fundamental Research Funds for the Central Universities[20720160023]
Language英语
Subject Area天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceOXFORD UNIV PRESS, GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS IDWOS:000441282300055
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCore-collapse Supernovae ; Internal-shock Model ; Millisecond Pulsars ; Burst Afterglows ; Engine Activity ; Light Curves ; 1st Survey ; Swift ; Emission ; Long
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/17880
Collection丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
Corresponding AuthorGu, Wei-Min
Affiliation1.Department of Astronomy, Xiamen University, Xiamen, Fujian 361005, China
2.Jiujiang Research Institute of Xiamen University, Jiujiang 332000, China
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, Yunnan Province, China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China
5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
6.College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang, Henan 473061, China
7.Guangxi Key Laboratory for Relativistic Astrophysics, Department of Physics, Guangxi University, Nanning 530004, China
Recommended Citation
GB/T 7714
Mu, Hui-Jun,Gu, Wei-Min,Mao JR,et al. A lower occurrence rate of bright X-ray flares in SN-GRBs than z < 1 GRBs: evidence of energy partitions?[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,478(3):3605-3613.
APA Mu, Hui-Jun.,Gu, Wei-Min.,Mao JR.,Liu, Tong.,Hou, Shu-Jin.,...&Liang, En-Wei.(2018).A lower occurrence rate of bright X-ray flares in SN-GRBs than z < 1 GRBs: evidence of energy partitions?.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,478(3),3605-3613.
MLA Mu, Hui-Jun,et al."A lower occurrence rate of bright X-ray flares in SN-GRBs than z < 1 GRBs: evidence of energy partitions?".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 478.3(2018):3605-3613.
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