观测系中伽马射线暴内光度与峰值能量关系的研究

Study on the Relation between Luminosity and Peak Energy in Gamma Ray Burst in Observed Frame

收集了121个由Fermi卫星探测到的具有已知红移值的伽马射线暴(简称伽马暴),并对其中32个伽马暴的时间积分谱和570个时间分辨谱进行研究,得出在伽马暴内和伽马暴间的各向同性等值光度L iso和静止系中νFν谱的峰值能量E′p都满足L iso∝E′^2p关系.同时定义ω=(L iso/10^52 erg s^-1)^0.5/(E′p/200 KeV),假设内激波和外激波模型参数互不相关,计算得出ω取值范围为0.1~1,并讨论了ω对内激波模型和外激波模型参数的限制.

A total of 121 gamma ray bursts(GRBs)with known red-shift values detected by Fermi Space Telescope were collected,wherein the time-integrated spectrum of 32 GRBs and the time-resolved spectrum of 570 GRBs were studied.It is concluded that the relational expression between the peak energy of spectrum in rest frame and the isotropic equivalent luminosity in and among GRBs exists.At the same time,assuming that the parameters of the internal shock wave model and the external shock wave model were not related to each other,the calculated value range was 0.1~1,and then limit on the parameters of the internal shock wave model and the external shock wave model with the value range.