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Constraining external reverse shock physics of gamma-ray bursts from ROTSE-III limits
Cui, Xiao-Hong1,2; Zou, Yuan-Chuan3; Wei, Jun-Jie2; Zheng, Wei-Kang4; Wu, Xue-Feng2,5
2018-02-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume473Issue:4Pages:5142-5153
Abstract

Assuming that early optical emission is dominated by external reverse shock (RS) in the standard model of gamma-ray bursts (GRBs), we intend to constrain RS models with an initial Lorentz factor Gamma(0) of the outflows based on the ROTSE-III observations. We consider two cases of RS behaviour: relativistic shock and non-relativistic shock. For a homogeneous interstellar medium (ISM) and the wind circum-burst environment, constraints can be achieved by the fact that the peak flux F-nu at the RS crossing time should be lower than the observed upper limit F-nu,F- limit. We consider the different spectral regimes in which the observed optical frequency nu(opt) may locate, which are divided by the orders for the minimum synchrotron frequency nu(m) and the cooling frequency nu(c). Considering the homogeneous and wind environments around GRBs, we find that the relativistic RS case can be constrained by the (upper and lower) limits of Gamma(0) in a large range from about hundreds to thousands for 36 GRBs reported by ROTSE-III. Constraints on the non-relativistic RS case are achieved with limits of Gamma(0) ranging from similar to 30 to similar to 350 for 26 bursts. The lower limits of Gamma(0) achieved for the relativistic RS model are disfavored based on the previously discovered correlation between the initial Lorentz factor Gamma(0) and the isotropic gamma-ray energy E-gamma,E- iso released in the prompt phase.

Keywordshock waves methods: statistical gamma-ray burst: general
DOI10.1093/mnras/stx2657
WOS KeywordAFTERGLOW LIGHT CURVES ; BULK LORENTZ FACTORS ; EARLY OPTICAL AFTERGLOWS ; BLACK-HOLES ; MILLISECOND PULSARS ; FERMI OBSERVATIONS ; RELATIVISTIC JETS ; GRB 130427A ; TEMPORAL STRUCTURE ; WIND ENVIRONMENTS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000424117300062
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22242
Collection中国科学院紫金山天文台
Corresponding AuthorCui, Xiao-Hong; Wu, Xue-Feng
Affiliation1.Chinese Acad Sci, Natl Astron Observat, Key Lab Opt Astron, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
3.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Hubei, Peoples R China
4.Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
5.Nanjing Univ, Purple Mt Observ, Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Cui, Xiao-Hong,Zou, Yuan-Chuan,Wei, Jun-Jie,et al. Constraining external reverse shock physics of gamma-ray bursts from ROTSE-III limits[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,473(4):5142-5153.
APA Cui, Xiao-Hong,Zou, Yuan-Chuan,Wei, Jun-Jie,Zheng, Wei-Kang,&Wu, Xue-Feng.(2018).Constraining external reverse shock physics of gamma-ray bursts from ROTSE-III limits.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,473(4),5142-5153.
MLA Cui, Xiao-Hong,et al."Constraining external reverse shock physics of gamma-ray bursts from ROTSE-III limits".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 473.4(2018):5142-5153.
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