γ射线暴的研究进展(Ⅳ):特强γ射线暴和软γ重复暴  

Progress in the Study of Gamma-ray Bursts(Ⅳ):Most Intense Gamma-ray Bursts and Soft Repeaters

作　　者：陆建隆[1] 潘善龙[2] 陆埮[3] 

机构地区：[1]南京师范大学物理系,南京210097 [2]浙江师范大学物理系,浙江金华321004 [3]南京大学天文系,南京210093

出　　处：《天文学进展》1996年第4期302-314,共13页Progress In Astronomy

摘　　要：最近CGRO上的仪器观测到了两个迄今为止发现的最强的λ暴GB930131和GB940217,其光子最高能量均达GeV量级;GB930131的峰值计数率达2×10~6个光子s^(-1);而GB940217的持续时间竟长达90min。另外沉寂了多年的软重复暴源SGR1900+14和SGR1806-20的再次爆发也由BATSE发现。一系列的观测还发现这些软重复暴均与X射线源对应且与超新星遗迹成协。文中对特强暴和软重暴(SGR)的性质及研究进展作了较为详细的评述。Two most intense gamma-ray bursts with photon energy up to the order of GeV, namelyGB930131 and GB940217, were observed with the instruments on CGRO. The peak count rate ofGB930131 is 2×10~6 counts per second. The duration of burst for GB940217 is as long as 90min. After many years silence, the soft gamma-ray repeaters SGR1900+14 and SGR1806-20 werediscovered to re-burst by BATSE. Many observations show that these soft gamma-ray rrpeatersare associated with X-ray sources and supernova remnants. In this paper, the characteristics ofboth most intense gamma-ray bursts and soft gamma-ray repeaters are reviewed.

关 键 词：Γ射线暴 超新星遗迹 中子星 

分 类 号：P172.3[天文地球—天文学]