Cosmological time dilation in short gamma-ray bursts

NTSC-IR

	Cosmological time dilation in short gamma-ray bursts
	Che, H ; Yang, Y ; Wu, M ; Li, QB
	1997-07-01
发表期刊	ASTROPHYSICAL JOURNAL
ISSN	0004-637X
卷号	483 期号:1 页码:L25-L27
摘要	Using the parameter V[=((C) over bar(64))(max)/((C) over bar(1024))(max)], the ratio of expected peak counts in 64 ms and 1024 ms, proposed by Che et al. recently, we find the cosmological time dilation in short gamma-ray bursts (t(90) < 1.5 s) directly from the Burst and Transient Source Experiment catalog. The parameter V of short bursts shows a good correlation with the brightness B when we use ((C) over bar(64))(max) as a measure of brightness B rather than ((C) over bar(1024))(max), introduced by Lamb et al. in 1993. In a Friedmann universe with Omega = 1 and Lambda = 0, the estimated redshift is about 2 and the time dilation factor (TDF) with the energy correction is about 1.8. The fact that these results generally agree with those found in long bursts supports the same origin of long and short gamma-ray bursts.
关键词	gamma rays, bursts
语种	英语
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
WOS记录号	WOS:A1997XJ17000007
出版者	UNIV CHICAGO PRESS
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/11519
专题	中国科学院国家授时中心
作者单位	1.CHINESE ACAD SCI,SHAANXI ASTRON OBSERV,XIAN 710600,PEOPLES R CHINA 2.BEIJING NORMAL UNIV,DEPT ASTRON,BEIJING 100080,PEOPLES R CHINA 3.CHINESE ACAD SCI,INST HIGH ENERGY PHYS,COSM RAY & HIGH ENERGY ASTROPHYS LAB,BEIJING 100039,PEOPLES R CHINA 4.CHINESE ACAD SCI,BEIJING ASTRON OBSERV,CTR YOUNG ASTRONOMER,BEIJING 100080,PEOPLES R CHINA
推荐引用方式 GB/T 7714	Che, H,Yang, Y,Wu, M,et al. Cosmological time dilation in short gamma-ray bursts[J]. ASTROPHYSICAL JOURNAL,1997,483(1):L25-L27.
APA	Che, H,Yang, Y,Wu, M,&Li, QB.(1997).Cosmological time dilation in short gamma-ray bursts.ASTROPHYSICAL JOURNAL,483(1),L25-L27.
MLA	Che, H,et al."Cosmological time dilation in short gamma-ray bursts".ASTROPHYSICAL JOURNAL 483.1(1997):L25-L27.