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Relative spectral lag: A new redshift indicator of gamma-ray bursts
Zhang ZB(张志彬)1,4; Deng JG(邓家干)1,2; Lu RJ(陆睿静)1,2,4; Gao, HF3; Zhang, ZB (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
2006
卷号6期号:3页码:312-322
DOI10.1088/1009-9271/6/3/06
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收录类别SCI
关键词Gamma-rays : Bursts Methods : Data Analysis
摘要Using 64 ms count data of long gamma-ray bursts (T-90 > 2.6 s), we analyze the quantity named relative spectral lag (RSL), tau(31)/FWHM(1). We investigated in detail all the correlations between the RSL and other parameters for a sample of nine long bursts, using the general cross-correlation technique that includes the lag between two different energy bands. We conclude that, the distribution of RSLs is normal and has a mean value of 0.1; that the RSLs are weakly correlated with the FWHM, the asymmetry, peak flux (F-p), peak energy (E-p) and spectral indexes (alpha and beta), while they are uncorrelated with tau(31), the hardness-ratio (HR31) and the peak time (t(m)). Our important discovery is that redshift (z) and peak luminosity (L-p) are strongly correlated with the RSL, which can be measured easily and directly, making the RSL a good redshift and peak luminosity indicator.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1009-9271
URL查看原文
归档日期2006-06-07
WOS记录号WOS:000238416500006
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]EXTERNAL SHOCK MODEL ; TEMPORAL PROPERTIES ; PEAK LUMINOSITY ; FIREBALL MODEL ; HOST GALAXIES ; PULSE-WIDTH ; ENERGY ; LONG ; VARIABILITY ; AFTERGLOW
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/7012
专题星系研究组
通讯作者Zhang, ZB (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011
2.Physics Department, Guangxi University, Nanning 530004
3.Sishui, No. 2 Middle School, Shandong 273206
4.Graduate School of Chinese Academy of Sciences, Beijing 100049
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Zhang ZB,Deng JG,Lu RJ,et al. Relative spectral lag: A new redshift indicator of gamma-ray bursts[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2006,6(3):312-322.
APA Zhang ZB,Deng JG,Lu RJ,Gao, HF,&Zhang, ZB .(2006).Relative spectral lag: A new redshift indicator of gamma-ray bursts.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,6(3),312-322.
MLA Zhang ZB,et al."Relative spectral lag: A new redshift indicator of gamma-ray bursts".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 6.3(2006):312-322.
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