NAOC Open IR
Delayed onset and fast rise of prompt optical-UV emission from gamma-ray bursts in molecular clouds ?
Cui Xiaohong1; Li Zhuo2; Xin Liping1
2013
Source PublicationResearch in Astronomy and Astrophysics
ISSN1674-4527
Volume13Issue:1Pages:57
AbstractObservations imply that long γ-ray bursts (GRBs) originate from the explosions of massive stars, therefore they may occur in the molecular clouds where their progenitorswere born.We show that the prompt optical-UV emission fromGRBs may be delayed due to dust extinction, which can explain the observed optical delayed onset and fast rise in GRB 080319B well. The density and the size of the molecular cloud around GRB 080319B are roughly constrained to be ~ 10~3 cm~(?3) and ~ 8 pc, respectively. We also investigate other GRBs with prompt optical-UV data, and find similar values of the densities and sizes of the local molecular clouds. Future observations of prompt optical-UV emission from GRBs on a timescale of subseconds, e.g. by UFFO-Pathfinder and SVOM-GWAC, will provide more evidence and probes of the local environments of GRBs.
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/37617
Collection中国科学院国家天文台
Affiliation1.中国科学院国家天文台
2.北京大学
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Cui Xiaohong,Li Zhuo,Xin Liping. Delayed onset and fast rise of prompt optical-UV emission from gamma-ray bursts in molecular clouds ?[J]. Research in Astronomy and Astrophysics,2013,13(1):57.
APA Cui Xiaohong,Li Zhuo,&Xin Liping.(2013).Delayed onset and fast rise of prompt optical-UV emission from gamma-ray bursts in molecular clouds ?.Research in Astronomy and Astrophysics,13(1),57.
MLA Cui Xiaohong,et al."Delayed onset and fast rise of prompt optical-UV emission from gamma-ray bursts in molecular clouds ?".Research in Astronomy and Astrophysics 13.1(2013):57.
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