Galli 2007 内激波的逆康普顿高能辐射的探测限度
主要内容:
文中计算了内激波包括暴本身和X射线耀的逆康普顿散射的高能辐射谱，看在将上天的AGILE和GLAST的探测情况。高的洛仑兹因子和时间variability会有更高的高能辐射。
精彩摘抄:
文章信息:
Gamma-Ray Burst high energy emission from Internal Shocks
(Submitted on 28 Sep 2007)
Abstract: In this paper we study synchrotron and Self Compton (SSC) emission from internal shocks (IS) during the prompt and X-ray flare phases of Gamma-Ray Bursts (GRBs). The aim is to test the IS model for the flare emission and if GRBs can be GeV sources. We determine the parameters for which the IS model can account for the observed prompt and X-ray flares emission, and study the detectability of the high energy SSC emission by the AGILE and GLAST satellites. We find that the detectability of the SSC emission during the prompt phase of GRBs improves for higher values of the fireball Lorentz factor and of the temporal variability. If IS is the mechanism responsible of the flare emission, the flares light curves must present some substructures with temporal variability of 100 ms much smaller than the average duration of flares, and similar to those observed during the prompt phase of GRBs. An investigation on the substructures of the X-ray flares light curves will allow to corroborate the hypothesis that late IS are responsible of the X-ray flares. We find that higher values of Lorentz factor and variability time favor the detection by AGILE and GLAST of the X-ray flare high energy counterpart.
没有评论:
发表评论