SPECTRAL ANALYSIS IN ORBITAL/SUPERORBITAL PHASE SPACE AND HINTS OF SUPERORBITAL VARIABILITY IN THE HARD X-RAYS OF LS I+61 degrees 303
文献类型：期刊论文
| 作者 | Li, J; Torres, DF; 张澍;Zhang, S |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2014 |
| 卷号 | 785期号:1页码:L19 |
| 关键词 | methods: observational X-rays: binaries X-rays: individual (LS I+61 degrees 303) |
| 英文摘要 | We present an INTEGRAL spectral analysis in the orbital/superorbital phase space of LS I +61 degrees 303. A hard X-ray spectrum with no cutoff is observed at all orbital/superorbital phases. The hard X-ray index is found to be uncorrelated with the radio index (non-simultaneously) measured at the same orbital and superorbital phases. In particular, the absence of an X-ray spectrum softening during periods of negative radio index does not favor a simple interpretation of the radio index variations in terms of a microquasar's changes of state. We uncover hints of superorbital variability in the hard X-ray flux, in phase with the superorbital modulation in soft X-rays. An orbital phase drift of the radio peak flux and index along the superorbital period is observed in the radio data. We explore its influence on a previously reported double-peak structure of a radio orbital light curve, and present it as a plausible explanation. |
| 学科主题 | Astronomy & Astrophysics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000334345000019 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224850]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 推荐引用方式 GB/T 7714 | Li, J,Torres, DF,张澍；Zhang, S. SPECTRAL ANALYSIS IN ORBITAL/SUPERORBITAL PHASE SPACE AND HINTS OF SUPERORBITAL VARIABILITY IN THE HARD X-RAYS OF LS I+61 degrees 303[J]. ASTROPHYSICAL JOURNAL LETTERS,2014,785(1):L19. |
| APA | Li, J,Torres, DF,&张澍；Zhang, S.(2014).SPECTRAL ANALYSIS IN ORBITAL/SUPERORBITAL PHASE SPACE AND HINTS OF SUPERORBITAL VARIABILITY IN THE HARD X-RAYS OF LS I+61 degrees 303.ASTROPHYSICAL JOURNAL LETTERS,785(1),L19. |
| MLA | Li, J,et al."SPECTRAL ANALYSIS IN ORBITAL/SUPERORBITAL PHASE SPACE AND HINTS OF SUPERORBITAL VARIABILITY IN THE HARD X-RAYS OF LS I+61 degrees 303".ASTROPHYSICAL JOURNAL LETTERS 785.1(2014):L19. |
入库方式： OAI收割
来源：高能物理研究所
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