NAOC Open IR  > 射电天文研究部
X-ray spectroscopy of dips of Cir X-1
Lei, Ya-Juan; Lu, Fang-Jun; Qu, Jin-Lu; Song, Li-Ming; Zhang, Cheng-Min
2007
发表期刊CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
卷号7期号:5页码:693-704
摘要We present X-ray spectral analyses of the low-mass X-ray binary Cir X-1 during X-ray dips, using the Rossi X-ray Timing Explorer (RXTE) data. Each dip was divided into several segments, and the spectrum of each segment was fitted with a three-component blackbody model, in which the first two components are affected by partial covering and the third one is unaffected. A Gaussian emission line is also included in the spectral model to represent the Fe K alpha line at similar to 6.4keV. The fitted temperatures of the two partially covered components are about 2 keV and I keV, while the uncovered component has a temperature of similar to 0.5-0.6keV. The equivalent blackbody emission radius of the hottest component is the smallest and that of the coolest component is the largest. During the dips the fluxes of the two hot components are linearly correlated, while that of the third component does not show any significant variation. The Fe line flux remains constant, within the errors, during the short dips. However, during the long dips the line flux varies significantly and is positively correlated with the fluxes of the two hot components. These results suggest: (1) that the temperature of the X-ray emitting region decreases with radius, (2) that the Fe Ka line emitting region is close to the hot continuum emitting region, and (3) that the size of the Fe line emitting region is larger than that of the obscuring matter causing the short dips but smaller than the region of that causing the long dips.
关键词Stars : Individual (Circinus X-1) Stars : Neutron X-rays : Stars
收录类别SCI
语种英语
WOS记录号WOS:000250426300010
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8314
专题射电天文研究部
作者单位1.Chinese Acad Sci, Inst High Energy Phys, Lab Particle Astrophys, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714
Lei, Ya-Juan,Lu, Fang-Jun,Qu, Jin-Lu,et al. X-ray spectroscopy of dips of Cir X-1[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2007,7(5):693-704.
APA Lei, Ya-Juan,Lu, Fang-Jun,Qu, Jin-Lu,Song, Li-Ming,&Zhang, Cheng-Min.(2007).X-ray spectroscopy of dips of Cir X-1.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,7(5),693-704.
MLA Lei, Ya-Juan,et al."X-ray spectroscopy of dips of Cir X-1".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 7.5(2007):693-704.
条目包含的文件
条目无相关文件。
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
[Lei, Ya-Juan]的文章
[Lu, Fang-Jun]的文章
[Qu, Jin-Lu]的文章
百度学术
百度学术中相似的文章
[Lei, Ya-Juan]的文章
[Lu, Fang-Jun]的文章
[Qu, Jin-Lu]的文章
必应学术
必应学术中相似的文章
[Lei, Ya-Juan]的文章
[Lu, Fang-Jun]的文章
[Qu, Jin-Lu]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。