Evolution of hard X-ray spectra along the orbital phase in circinus X-1
文献类型：期刊论文
| 作者 | Ding, GQ; Zhang SN(张双南) ; Li TB(李惕碚); Qu JL(屈进禄); Zhang, SN; Li, TP; Qu, JL
|
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2006 |
| 卷号 | 645期号:1页码:576-588 |
| 关键词 | binaries : general stars : individual (Circinus X-1) X-rays : binaries X-rays : general X-rays : individual (Circinus X-1) |
| 通讯作者 | Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China ; Tsing Hua Univ, Ctr Astrophys, Beijing 100084, Peoples R China ; Univ Alabama, Dept Phys, Huntsville, AL 35899 USA ; NASA, George C Marshall Space Flight Ctr, Space Sci Lab, Huntsville, AL 35812 USA ; Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China |
| 英文摘要 | Using the data from the Proportional Counter Array and the High-Energy X-Ray Timing Experiment on board the Rossi X-Ray Timing Explorer satellite, we investigate the evolution of the 3-200 keV spectrum of the peculiar low-mass X-ray binary Circinus X-1 along its orbital phase. A power-law hard component, dominating above similar to 30 keVas well as contributing between 0.9% and 3.5% of the total flux, and the iron emission line are detected in the spectrum. It is found that the derived photon index (Gamma) of the power-law hard component and the characteristics of the iron emission line are modulated by the orbital phase: the hardest hard tail, the lowest line energy, and the largest line width of the iron emission line are detected at the periastron. However, the softest hard tail, the highest line energy, and the lowest line width of the iron emission line are detected after the apastron. At the periastron the source evolves along a complete track in the color-color diagram. These behaviors of orbital modulation are discussed. A possible origin of the power-law hard component is also discussed. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000238832900047 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/238006]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 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 | Ding, GQ,Zhang SN,Li TB,et al. Evolution of hard X-ray spectra along the orbital phase in circinus X-1[J]. ASTROPHYSICAL JOURNAL,2006,645(1):576-588. |
| APA | Ding, GQ.,张双南.,李惕碚.,屈进禄.,Zhang, SN.,...&Qu, JL.(2006).Evolution of hard X-ray spectra along the orbital phase in circinus X-1.ASTROPHYSICAL JOURNAL,645(1),576-588. |
| MLA | Ding, GQ,et al."Evolution of hard X-ray spectra along the orbital phase in circinus X-1".ASTROPHYSICAL JOURNAL 645.1(2006):576-588. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
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。