THE PROPERTIES OF CROSS-CORRELATION AND SPECTRA OF THE LOW-MASS X-RAY BINARY 4U 1608-52
文献类型：期刊论文
| 作者 | Lei, Ya-Juan1; Zhang, Shu2; Qu, Jin-Lu2; Yuan, Hai-Long1; Wang, Ya-Nan3 ; Dong, Yi-Qiao1; Zhang, Hao-Tong1; Li, Zhi-Bing3; Zhang, Cheng-Min1; Zhao, Yong-Heng1
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| 刊名 | ASTRONOMICAL JOURNAL
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| 出版日期 | 2014-03-01 |
| 卷号 | 147期号:3 |
| 关键词 | accretion, accretion disks binaries: close stars: individual (4U 1608-52) X-rays: binaries |
| 英文摘要 | With RXTE data, we analyzed the cross-correlation function between the soft and hard X-rays of the transient atoll source 4U 1608-52. We found anti-correlations in three outbursts occurred in 1998, 2002, and 2010, and we found significant time lags of several hundreds of seconds in the latter two outbursts. Our results show no correlation between the soft and hard X-rays in the extreme island state and a dominated positive correlation in the lower banana state. Anti-correlations are presented at the upper banana state for the outburst of 2010 and at the island and the lower left banana states for the other two outbursts. So far for atoll sources, the cross-correlation has been studied statistically only for 4U 1735-44, where anti-correlations showed up in the upper banana state. Here our investigation on 4U 1608-52 provides a similar result in its 2010 outburst. In addition, we notice that the luminosities in the upper banana of the 1998 and 2002 outbursts are about 1.5 times that of the 2010 outburst whose luminosity in the upper banana is close to that of 4U 1735-44. The results suggest that the states in the color-color diagram of a source could be correlated with the luminosity of the source. A further spectral analysis during the 2010 outburst is also shown, which suggests that the disk can be a little truncated in the upper banana. The feature on the upper banana is similar to the previous results of the flaring branch in Z sources. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | TRUNCATED ACCRETION DISK ; BLACK-HOLE BINARIES ; QUASI-PERIODIC OSCILLATIONS ; NEUTRON-STAR ; TIME LAGS ; LOW/HARD STATE ; INTERMEDIATE STATE ; SOURCE 4U-1608-52 ; TIMING-EXPLORER ; MAGNETIC-FIELD |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000331125600022 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/598]  |
| 专题 | 高能天体物理研究团组 新疆天文台_射电天文研究室 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Ctr Particle Astrophys, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lei, Ya-Juan,Zhang, Shu,Qu, Jin-Lu,et al. THE PROPERTIES OF CROSS-CORRELATION AND SPECTRA OF THE LOW-MASS X-RAY BINARY 4U 1608-52[J]. ASTRONOMICAL JOURNAL,2014,147(3). |
| APA | Lei, Ya-Juan.,Zhang, Shu.,Qu, Jin-Lu.,Yuan, Hai-Long.,Wang, Ya-Nan.,...&Zhao, Yong-Heng.(2014).THE PROPERTIES OF CROSS-CORRELATION AND SPECTRA OF THE LOW-MASS X-RAY BINARY 4U 1608-52.ASTRONOMICAL JOURNAL,147(3). |
| MLA | Lei, Ya-Juan,et al."THE PROPERTIES OF CROSS-CORRELATION AND SPECTRA OF THE LOW-MASS X-RAY BINARY 4U 1608-52".ASTRONOMICAL JOURNAL 147.3(2014). |
入库方式： OAI收割
来源：新疆天文台
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