河北师范大学学报—

期刊信息

刊名：河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
主办：河北师范大学
ISSN： 1000-5854
CN： 13-1061/N
中国科技核心期刊
中国期刊方阵入选期刊
中国高校优秀科技期刊
华北优秀期刊
河北省优秀科技期刊

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Fermi/GBM伽马暴的谱能关系

杨佚沿¹

江林焱²

王德华³

周筑文¹

1. 贵州师范学院物理与电子科学学院, 贵州贵阳 550018;
2. 贵州大学明德学院, 贵州贵阳 550025;
3. 贵州师范大学物理与电子科学学院, 贵州贵阳 550001
DOI： 10.13763/j.cnki.jhebnu.nse.2016.06.008

On the Spectra-energy Relation in Fermi/GBM Gamma-ray Bursts

YANG Yiyan¹, JIANG Linyan², WANG Dehua³, ZHOU Zhuwen¹

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摘要/Abstract

摘要：

选取10个已知红移的单峰Fermi/GBM长暴，采用交叉相关函数计算第1与第3能道之间的相对能谱延迟（RSL）.研究发现，伽马暴的R_SLs分别与峰值光度和红移相关，所得结果与已报道文献中利用BATSE暴得到的结果相符合.这意味着R_SL与峰值光度和红移的相关关系不受探测仪器选择效应的影响.这表明R_SL可以作为一个可能的宇宙红移探测指示器用于宇宙学参数的测量.利用这些Fermi/GBM伽马暴样本，通过重新分析发现峰值能量与峰值光度、各向同性能存在较强相关.这些关系与从BATSE暴中得到的结果不一致，而与从Swift暴得到的结果符合.

Abstract：

Selecting 10 single-pulsed Fermi/GBM long gamma-ray bursts with known redshift,we use cross-correlation function (CCF) to calculate the relative spectral lag (RSL) between energy channels 1 and 3.We find that the R_SLs are respectively correlated with the peak luminosity and the redshift of gamma-ray bursts,which is consistent with that of BATSE gamma-ray bursts.This shows that correlations of R_SL with the peak luminosity and the redshift are not affected by the so-called selection effect of different detectors.It also suggests that the R_SL can be applied as a reliable indicator to measure the basically cosmological param-eters.With the same Fermi/GBM sample,we re-analyze the correlations of peak energy with peak luminosity and isotropic energy and find that they are tightly correlated.Interestingly,these relations are inconsistent with those obtained with BATSE GRBs but consistent with those of Swift GRBs.

关键词

关键词： 伽马暴 ; 宇宙学 ; 观测

Key words： gamma-ray burst ; cosmology ; observations

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