天文研究与技术-国家天文台台刊
天文研究與技術-國傢天文檯檯刊
천문연구여기술-국가천문태태간
ASTRONOMICAL RESEARCH AND TECHNOLOGY—PUBLICATIONS OF NATIONAL ASTRONOMICAL OBSERVATORIES OF CHINA
2005年
1期
1-11
,共11页
珈玛爆%光变曲线%内激波模型
珈瑪爆%光變麯線%內激波模型
가마폭%광변곡선%내격파모형
gamma-ray burst%light curve%internal shock model
采用一个简单的激波模型来讨论了珈玛射线爆光变曲线的轮廓.根据激波理论,爆炸产生压力脉冲并以压力波的形式传播,既有压缩波也有膨胀波.压缩波的合并产生激波,它的强度被随后并入的压缩波或膨胀波分别增强或减弱.该模型能自然地描述珈玛爆光变曲线和光变曲线具有的"快速上升指数下降"的轮廓特征.我们认为这一特征是压缩波和膨胀波的传播特性导致的.
採用一箇簡單的激波模型來討論瞭珈瑪射線爆光變麯線的輪廓.根據激波理論,爆炸產生壓力脈遲併以壓力波的形式傳播,既有壓縮波也有膨脹波.壓縮波的閤併產生激波,它的彊度被隨後併入的壓縮波或膨脹波分彆增彊或減弱.該模型能自然地描述珈瑪爆光變麯線和光變麯線具有的"快速上升指數下降"的輪廓特徵.我們認為這一特徵是壓縮波和膨脹波的傳播特性導緻的.
채용일개간단적격파모형래토론료가마사선폭광변곡선적륜곽.근거격파이론,폭작산생압력맥충병이압력파적형식전파,기유압축파야유팽창파.압축파적합병산생격파,타적강도피수후병입적압축파혹팽창파분별증강혹감약.해모형능자연지묘술가마폭광변곡선화광변곡선구유적"쾌속상승지수하강"적륜곽특정.아문인위저일특정시압축파화팽창파적전파특성도치적.
In this paper,a simple shock model is adopted to discuss the profile of Gamma-Ray Burst light curves.According to the shock theory,the ejecta produced by explosion form the pressure pulse,and it spreads in forms of either compression waves or expansion waves.Shocks are formed by merge of compression waves with each other and its magnitude is enhanced or declined by catching compression waves or expansion waves behind the shock respectively.This model can simulate the light curve of the gamma-ray burst and naturally describe the profile characteristic "fast rise and decay exponent" very well.It is found that the transmission characteristic of the compression waves or expansion waves naturally result in the situation in Gamma-Ray Bursts.
