不同仪器GRB观测数据的一致性分析
发布时间：2019-03-07 19:23
【摘要】：BATSE(Compton Gamma-Ray Observatory/Bursts and Transient SourceExperiment)、Swift(Swift Gamma-ray Burst Explorer)和Fermi卫星(Fermi GammaraySpace Telescope)提供了大量的GRB样本.研究比较3种仪器观测的暴的特征,发现虽然有红移暴的数目、所有暴中长暴的比例以及光子流量分布(lgN-lgP分布)等有显著差异,但是暴的持续时间、伽玛辐射总流量、谱硬度比等均没有显著差异.考虑Swift和Fermi暴的观测能段不同,进行修正以后,发现lgN-lgP分布的差异也基本消除.有红移暴的数目、长暴占总暴数的比例是由仪器本身的灵敏度决定的,即不同仪器决定不同GRB的观测特征,但是它们的本质是一致的.
[Abstract]:The BATSE (Compton Gamma-Ray Observatory/Bursts and Transient SourceExperiment), Swift (Swift Gamma-ray Burst Explorer) and Fermi satellites (Fermi GammaraySpace Telescope) provide a large number of GRB samples. The characteristics of the storms observed by the three instruments were studied and compared. It was found that although there were significant differences in the number of red migration storms, the proportion of long bursts in all bursts and the photon flow distribution (lgN-lgP distribution), the duration of the burst, the total gamma radiation flow, and so on, were significantly different. There was no significant difference in spectral hardness ratio. Considering the difference of the observed energy of Swift and Fermi storms, it is found that the difference of lgN-lgP distribution is basically eliminated after the correction. The number of red shift storms and the proportion of long bursts to total bursts are determined by the sensitivity of the instrument itself, that is, the observation characteristics of different GRB are determined by different instruments, but their essence is the same.
【作者单位】： 厦门理工学院数理系;
【基金】：福建省青年人才创新项目(2007F3105)资助
【分类号】：P172.3
，
本文编号：2436384
[Abstract]:The BATSE (Compton Gamma-Ray Observatory/Bursts and Transient SourceExperiment), Swift (Swift Gamma-ray Burst Explorer) and Fermi satellites (Fermi GammaraySpace Telescope) provide a large number of GRB samples. The characteristics of the storms observed by the three instruments were studied and compared. It was found that although there were significant differences in the number of red migration storms, the proportion of long bursts in all bursts and the photon flow distribution (lgN-lgP distribution), the duration of the burst, the total gamma radiation flow, and so on, were significantly different. There was no significant difference in spectral hardness ratio. Considering the difference of the observed energy of Swift and Fermi storms, it is found that the difference of lgN-lgP distribution is basically eliminated after the correction. The number of red shift storms and the proportion of long bursts to total bursts are determined by the sensitivity of the instrument itself, that is, the observation characteristics of different GRB are determined by different instruments, but their essence is the same.
【作者单位】： 厦门理工学院数理系;
【基金】：福建省青年人才创新项目(2007F3105)资助
【分类号】：P172.3
，
本文编号：2436384
本文链接：https://www.wllwen.com/kejilunwen/tianwen/2436384.html
