位置:成果数据库 > 期刊 > 期刊详情页
曲率效应导致的伽马暴高能尾
  • ISSN号:1674-1056
  • 期刊名称:《中国物理B:英文版》
  • 时间:0
  • 分类:P15[天文地球—天文学]
  • 作者机构:[1]广州大学天体物理中心,广东广州510006
  • 相关基金:国家自然科学基金资助项目(10573005);广东省优秀学者基金资助项目(Q02114)Acknowledgments My special thanks are due to Prof. M. J. Rees for his helpful suggestions and discussion. Parts of this work were done when I visited Institute of Astronomy, University of Cambridge and Astrophysics Research Institute, Liverpool John Moores University. Thanks are also given to these institutes. I also thank Prof. T. Kiang and Dr. C. Moss for helpful discussion and polishing up the English.
作者: 覃一平[1]
中文摘要:

根据“曲率效应”,预言伽马暴随动谱中高能端的一根发射线可以形成观测谱中的一个翘起的高能尾。这解释了为什么从来没有在伽马暴中观测到窄发射线。翘尾的峰是洛仑兹因子的线性函数。这表明。当该发射线被证认时,翘尾峰可成为火球膨胀速度的指示器。

英文摘要:

Due to the so-called curvature effect of expanding fireballs, it is predicted that an emission line existing within the higher energy range of the rest frame spectrum of gamma-ray bursts (GRBs) will form an uprising tip in the high energy tail of the observational spectrum. The analysis naturally explains why there are no narrow emission lines being detected in the high energy tail of GRBs. The peak of the uprising tip in the high energy tail, E,ip, is a linear function of the Lorentz factor Г, approximately following Etip =2FEline when Г is large enough, where Eline is the emission line concerned. It suggests that Etip might serve as an indicator of the expansion speed of fireballs when the corresponding emission line is identified.

同期刊论文项目
同项目期刊论文
期刊信息
  • 《中国物理B:英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国物理学会和中国科学院物理研究所
  • 主编:欧阳钟灿
  • 地址:北京 中关村 中国科学院物理研究所内
  • 邮编:100080
  • 邮箱:
  • 电话:010-82649026 82649519
  • 国际标准刊号:ISSN:1674-1056
  • 国内统一刊号:ISSN:11-5639/O4
  • 邮发代号:
  • 获奖情况:
  • 国内外数据库收录:
  • 被引量:406