Doi 2007 早期光学辐射的内激波模型 3

主要内容:
用内激波，同步辐射加高纬辐射来解释早期的光学辐射。

精彩摘抄:


文章信息:

astro-ph/0701603 [abs, ps, pdf, other] :

Title: A Unified Model of Prompt Optical Emission of Gamma-Ray Bursts
Authors: Hirotsugu Doi, Kentaro Takami, Ryo Yamazaki
Comments: 8 pages, 1 figure, submitted to ApJL

The observational diversity of the optical emission simultaneous with the prompt gamma-ray bursts (GRBs) has been found in the recent Swift era. We show that on the assumption of the synchrotron radiation for the observed energy range below the X-ray band, the observed diversity can be explained in the internal shock model taking into account a high-latitude emission and the spectral change due to the synchrotron self-absorption. It may even be possible in our model to include bright optical flashes found in, e.g., GRB 990123. The prediction of our model is that the spectral index in the optical band depends on whether the optical light curve correlates with those in the X-rays and/or gamma-rays or not, which will be tested in the near future observations.