The cross spectra of Circinus X-1: Evolution of time lags
文献类型：期刊论文
| 作者 | Qu JL(屈进禄) ; Yu W(虞文); Li TB(李惕碚); Qu, JL; Yu, W; Li, TP
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| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2001 |
| 卷号 | 555期号:1页码:7-11 |
| 关键词 | binaries : general stars : individual (Circinus X-1) X-rays : binaries X-rays : individual (Circinus X-1) X-rays : stars |
| 通讯作者 | Qu, JL (reprint author), Chinese Acad Sci, Inst High Energy Phys, High Energy Astrophys Lab, Beijing 100039, Peoples R China. |
| 英文摘要 | Earlier work showed that the track in the X-ray hardness-intensity diagram of Cir X-1 corresponds to a Z track in its color-color diagram. In this paper, we study the cross spectrum of Cir X-1 in different regions of the hardness-intensity diagram with RXT E/PCA data. Comparing the light curves of Cir X-1 for the energy band 1.8-5.1 keV with those for 5.1-13.1 keV, we find that Cir X-1 exhibits a hard time lag on the horizontal branch and a soft time lag on both the normal and the flaring branches. This indicates that Cir X-1 is similar to GX 5-1 and Cyg X-2 on the horizontal branch but is different from them on the normal branch. We briefly discuss the mechanism of the time lags in the context of Comptonization models. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000169944500002 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225460]  |
| 专题 | 高能物理研究所_院士 高能物理研究所_粒子天体物理中心 |
| 推荐引用方式 GB/T 7714 | Qu JL,Yu W,Li TB,et al. The cross spectra of Circinus X-1: Evolution of time lags[J]. ASTROPHYSICAL JOURNAL,2001,555(1):7-11. |
| APA | 屈进禄,虞文,李惕碚,Qu, JL,Yu, W,&Li, TP.(2001).The cross spectra of Circinus X-1: Evolution of time lags.ASTROPHYSICAL JOURNAL,555(1),7-11. |
| MLA | 屈进禄,et al."The cross spectra of Circinus X-1: Evolution of time lags".ASTROPHYSICAL JOURNAL 555.1(2001):7-11. |
入库方式： OAI收割
来源：高能物理研究所
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