YNAO OpenIR  > 星系研究组
A new redshift indicator of gamma-ray bursts to measure the cosmos
Zhang ZB(张志彬)
Source PublicationData Science Journal
Contribution Rank第1完成单位
Indexed ByEI
AbstractUsing 64 ms count data of long gamma-ray bursts (LBs, T90 > 2.6 s), we analyze the quantity named relative spectral lag (RSL), τ31/FWHM(1) = τrel, 31. We investigate in detail the properties of the RSL for a sample of nine LBs, using the general cross-correlation technique that includes the lag between two different energy bands. We find that the distribution of RSLs is normal and has a mean value of 0.1. 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. In addition, we find that the redshift and luminosity estimator can also hold for short gamma-ray bursts (SBs, T90 < 2.6 s). With it, we estimate the median of redshift and peak luminosity of SBs to be about z&leP.06 and Lp∼1.68×1048 erg/s, which are in excellent agreement with the results suggested by some previous authors. We thus argue that the sources including SBs and LBs with positive spectral lags might be one united category with the same physical process.
Subject Area天文学
Citation statistics
Document Type期刊论文
Recommended Citation
GB/T 7714
Zhang ZB. A new redshift indicator of gamma-ray bursts to measure the cosmos[J]. Data Science Journal,2007,6(Supplement):S324-S332.
APA 张志彬.(2007).A new redshift indicator of gamma-ray bursts to measure the cosmos.Data Science Journal,6(Supplement),S324-S332.
MLA 张志彬."A new redshift indicator of gamma-ray bursts to measure the cosmos".Data Science Journal 6.Supplement(2007):S324-S332.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[张志彬]'s Articles
Baidu academic
Similar articles in Baidu academic
[张志彬]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[张志彬]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.