【摘要】：BATSE(Compton Gamma-Ray Observatory/Bursts and Transient SourceExperiment)、Swift(Swift Gamma-ray Burst Explorer)和Fermi衛(wèi)星(Fermi GammaraySpace Telescope)提供了大量的GRB樣本.研究比較3種儀器觀(guān)測(cè)的暴的特征,發(fā)現(xiàn)雖然有紅移暴的數(shù)目、所有暴中長(zhǎng)暴的比例以及光子流量分布(lgN-lgP分布)等有顯著差異,但是暴的持續(xù)時(shí)間、伽瑪輻射總流量、譜硬度比等均沒(méi)有顯著差異.考慮Swift和Fermi暴的觀(guān)測(cè)能段不同,進(jìn)行修正以后,發(fā)現(xiàn)lgN-lgP分布的差異也基本消除.有紅移暴的數(shù)目、長(zhǎng)暴占總暴數(shù)的比例是由儀器本身的靈敏度決定的,即不同儀器決定不同GRB的觀(guān)測(cè)特征,但是它們的本質(zhì)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.
【作者單位】： 廈門(mén)理工學(xué)院數(shù)理系;
【基金】：福建省青年人才創(chuàng)新項(xiàng)目(2007F3105)資助
【分類(lèi)號(hào)】：P172.3
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本文編號(hào)：2436384