考虑同步自吸收的γ暴能谱  

The GRB fireball-model including the effect of synchrotron self-absorption

作　　者：许云[1] 杨丕博[2] 

机构地区：[1]中国科学院上海天文台,上海200030 [2]华中师范大学物理系,武汉430079

出　　处：《华中师范大学学报（自然科学版）》2005年第1期32-34,共3页Journal of Central China Normal University：Natural Sciences

基　　金：国家自然科学基金资助项目(19778003).

摘　　要：重点讨论有自吸收的γ射线暴余辉的能谱,考虑了在火球模型中同步加速辐射中的自吸收效应,用含有吸收系数的同步加速辐射谱公式计算了GRB970508余辉的辐射谱.解释了GRB970508射电和光学波段余辉的光变曲线的特征.This paper mainly takes into account the effect of synchrotron self-absorption.The radiation spectra and flux of gamma-ray burst afterglow are discussed. We present GRB970508 afterglow light curve in Radio and optical bands. Although the afterglows seem to be very complicated, our results can still present a rather satisfactory fit. In the end it suggests that synchrotron self-absorption and inner engine mechanism should be comprehensively studied in order to make theoretical calculation fit the observed light curve completely well.

关 键 词：Γ射线暴 火球模型 同步自吸收 余辉 

分 类 号：P172[天文地球—天文学]