STATE-DEPENDENT ORBITAL MODULATION OF X-RAYS IN CYG X-3
文献类型：期刊论文
| 作者 | Weng SS(翁山杉); Zhang SN(张双南) ; Ge MQ(葛明琪); Li J(李剑); Zhang S(张澍); Weng, SS; Zhang, SN; Ge, MY; Li, J; Zhang, S
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2013 |
| 卷号 | 763期号:1页码:34 |
| 关键词 | accretion binaries: close X-rays: binaries X-rays: individual (CygX-3) stars: winds accretion disks outflows |
| 英文摘要 | We analyze all of the available RXTE observations of Cyg X-3 in order to investigate the connection between the central X-ray source and its surrounding environment. The hardness-intensity diagram of Cyg X-3 displays a "shoe" shape rather than the Q-type shape commonly seen in other black hole X-ray binary, and exhibits no apparent hysteresis effect. During the gamma-ray outbursts, no existing data are located in the hard and intermediate states, which suggest the absence of a significant population of non-thermal electrons when the source is in these states. For the first time, we present the orbital modulation of the X-ray light curve (LC) of all five states. The different energy band LCs are in phase with each other in all five states, and the modulation amplitude of both soft and hard X-ray LCs monotonously increases with decreasing hardness from hard to soft non-thermal states. We confirm that the modulation depth decreases with increasing energy in the hard, intermediate, and very high states, as originally reported by Zdziarski et al. However, in the soft non-thermal state, the hard X-ray modulation strength significantly increases and is even larger than the soft X-ray one. Our results rule out both wind absorption and jet origins of the hard X-ray LC modulation in the soft non-thermal state, and challenge our understanding of the states of Cyg X-3. |
| 学科主题 | Astronomy & Astrophysics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000313456700034 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224395]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Weng SS,Zhang SN,Ge MQ,et al. STATE-DEPENDENT ORBITAL MODULATION OF X-RAYS IN CYG X-3[J]. ASTROPHYSICAL JOURNAL,2013,763(1):34. |
| APA | 翁山杉.,张双南.,葛明琪.,李剑.,张澍.,...&Zhang, S.(2013).STATE-DEPENDENT ORBITAL MODULATION OF X-RAYS IN CYG X-3.ASTROPHYSICAL JOURNAL,763(1),34. |
| MLA | 翁山杉,et al."STATE-DEPENDENT ORBITAL MODULATION OF X-RAYS IN CYG X-3".ASTROPHYSICAL JOURNAL 763.1(2013):34. |
入库方式： OAI收割
来源：高能物理研究所
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