A two-component synchrotron emisson from internal shocks and application to GRB 080319B

摘要：

In the framework of the popular internal shock model,paired forward and reverse shocks are generated simultaneously by collisions among relativistic shells．If the Lorentz factors of these two types of shocks are very different,thesynchrotron emissions produced by them could peak at two different energy bands．We show that such a two-componentsynchrotron scenario can account for the prompt optical and MeV γ-ray emissions of GRB 080319B．The same dynamicalorigin of the forward and reverse shocks is consistent with the temporal coincidence between the prompt γ-ray and opticalemission components．

关键词： gamma rays bursts-radiation mechanisms nonthemal

作者: Yun-Wei Yu X.Y Wang Z.G.Dai

作者单位: Department of Astronomy,Nanjing University,Nanjing 210093,China Institute of Astrophysics,Huazhong N Department of Astronomy,Nanjing University,Nanjing 210093,China

会议类型: 国际会议

会议名称: 2008 NanJing Gamma-Ray Burst Conference(2008年伽马暴国际研讨会)

会议地点: 南京

会议语种:英文

页码: 263-266

在线出版日期: 2008-06-23（万方平台首次上网日期，不代表论文的发表时间）