Dado 2007 3D模型对Swift X射线余辉的解释

主要内容:
还是用他们的cannonball模型，解释目前X射线的四段光变的现象。

精彩摘抄:


文章信息:
arXiv:0706.0880 [ps, pdf, other] : Title: On the X-Ray emission of Gamma Ray Bursts
Authors: Shlomo Dado, Arnon Dar, Alvaro De Rujula
Comments: 45 pages, 8 (multiple) figures

Recent data gathered and triggered by the SWIFT satellite have greatly improved our knowledge of long-duration gamma ray bursts (GRBs) and X-ray flashes (XRFs). This is particularly the case for the X-ray data at all times. We show that the entire X-ray observations are in excellent agreement with the predictions of the `cannonball' model of GRBs and XRFs, which are based on simple physics and were published long before the launch of SWIFT. Two mechanisms underlie these predictions: inverse Compton scattering and synchrotron radiation, generally dominant at early and late times, respectively. The former mechanism provides a unified description of the gamma-ray peaks, X-ray flares and even the optical `humps' seen in some favourable cases; i.e. their very different durations, fluxes and peak-times are related precisely as predicted. The observed smooth or bumpy fast decay of the X-ray light curve is correctly described case-by-case, in minute detail. The `canonical' X-ray plateau, as well as the subsequent gradual steepening of the afterglow to an asymptotic power-law decay, are as foretold. So are the chromatic and achromatic properties of the light-curves.