摘要
γ射线暴 (称简γ暴 )的研究在最近几年里有了巨大的突破。观测上 ,人们发现了γ暴的低能余辉以及与γ射线爆发同时的光学爆发 ,还发现了它位于宇宙学距离的寄主星系。越来越多的观测证据还表明长时标γ暴与恒星形成区、甚至可能与超新星成协。在γ暴的相对论火球模型框架下 ,人们对γ暴以及余辉的产生机制的认识也有了进展。进而人们对γ暴的前身星以及环境效应等有了新的认识。
Major advances have been made in the field of gamma-ray bursts (GRBs) in recent years. In the aspect of observations, fading X-ray, optical and radio afterglows, optical burst occurring during the gamma-ray emission, and the GRB host galaxies at cosmological distance are discovered. There is evidence showing that many GRBs of long duration are associated with star-forming regions and possibly supernovae. Progress has been made in understanding how the GRB and afterglow radiation arises in terms of a relativistic reball shock model. With these advances, people are now getting better understandings of their progenitors and the effects of the environment, etc. Here we will give a review on these advances and understandings.
出处
《物理学进展》
CSCD
北大核心
2002年第2期131-162,共32页
Progress In Physics
基金
国家自然科学基金 (1 9973 0 0 3
1 982 5 1 0 9)
国家 973项目 (NKBRSFG1 9990 75 4 )资助项目
