IHEP OpenIR  > 院士
X-ray spectral variability in Cygnus X-1
Liu, CZ; Li TB(李惕碚); Li, TP
2004
发表期刊ASTROPHYSICAL JOURNAL
卷号611期号:2页码:1084-1090
通讯作者Tsing Hua Univ, Dept Engn Phys, Beijing 100084, Peoples R China ; Tsing Hua Univ, Ctr Astrophys, Beijing 100084, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Particle Astrophys Lab, Beijing, Peoples R China
文章类型Article
摘要Spectral variability in different energy bands of X-rays from Cyg X-1 in different states is studied with Rossi X-Ray Timing Explorer (RXTE) observations and time-domain approaches. In the hard tail of the energy spectrum above similar to10 keV, average peak-aligned shots are softer than the average steady emission and the hardness ratio decreases when the flux increases during a shot for all states. With regard to a soft band below similar to10 keV, the hardness in the soft state varies in an opposite manner: it peaks when the flux of the shot peaks. For the hard and transition states, the hardness ratio with respect to a soft band during a shot is in general lower than that of the steady component, and a sharp rise is observed at about the shot peak. For the soft state, the correlation coefficient between the intensity and hardness ratio in the hard tail is negative and decreases monotonically as the timescale increases from 0.01 to 50 s, which is opposite to the behavior in a soft band. For the hard and transition states, the correlation coefficients are in general negative and have a trend of decreasing with increasing timescale.
关键词accretion, accretion disks black hole physics stars : individual (Cygnus X-1) X-rays : stars
学科领域Astronomy & Astrophysics
DOI10.1086/422209
URL查看原文
语种英语
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000223403400040
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239019
专题院士
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Liu, CZ,Li TB,Li, TP. X-ray spectral variability in Cygnus X-1[J]. ASTROPHYSICAL JOURNAL,2004,611(2):1084-1090.
APA Liu, CZ,李惕碚,&Li, TP.(2004).X-ray spectral variability in Cygnus X-1.ASTROPHYSICAL JOURNAL,611(2),1084-1090.
MLA Liu, CZ,et al."X-ray spectral variability in Cygnus X-1".ASTROPHYSICAL JOURNAL 611.2(2004):1084-1090.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
6113.pdf(320KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Liu, CZ]的文章
[李惕碚]的文章
[Li, TP]的文章
百度学术
百度学术中相似的文章
[Liu, CZ]的文章
[李惕碚]的文章
[Li, TP]的文章
必应学术
必应学术中相似的文章
[Liu, CZ]的文章
[李惕碚]的文章
[Li, TP]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。