The evolution of the phase lags associated with the type-c quasi-periodic oscillation in gx 339-4 during the 2006/2007 outburst
文献类型：期刊论文
| 作者 | Zhang, Liang1,2; Wang, Yanan2; Mendez, Mariano2; Chen, Li1; Qu, Jinlu3; Altamirano, Diego4; Belloni, Tomaso5 |
| 刊名 | Astrophysical journal
 |
| 出版日期 | 2017-08-20 |
| 卷号 | 845期号:2页码:11 |
| ISSN号 | 0004-637X |
| 关键词 | Accretion, accretion disks Black hole physics X-rays: binaries |
| DOI | 10.3847/1538-4357/aa8138 |
| 通讯作者 | Zhang, liang(201431160006@mail.bnu.edu.cn) |
| 英文摘要 | We present the evolution of the phase lags associated with the type-c qpo in gx 339-4 during the rising phase of the 2006/2007 outburst. we find that the phase lags at the qpo frequency are always positive ( hard) and show very different behavior between qpos with frequencies below and above similar to 1.7 hz: when the qpo frequency is below similar to 1.7 hz, the phase lags increase both with qpo frequency and energy, while when the qpo frequency is above similar to 1.7 hz, the phase lags remain more or less constant. when the qpo frequency is higher than similar to 1.7 hz, a broad feature is always present in the lag-energy spectra at around 6.5 kev, suggesting that the reflection component may have a significant contribution to the phase lags. below similar to 1.7 hz, the qpo rms first decreases with energy and then turns to almost flat, while above similar to 1.7 hz, the qpo rms increases with energy. during the transition from the low-hard state to the hard-intermediate state, the second harmonic and subharmonic of this qpo appear in the power density spectra. the second-harmonic and subharmonic phase lags show very similar evolutions for their centroid frequencies. however, the energy dependence of the second-harmonic and subharmonic phase lags are quite different. our results suggest that, at different phases of the outburst, different mechanisms may be responsible for the phase lags of the qpo. we briefly discuss the possible scenarios for producing the lags. |
| WOS关键词 | X-RAY BINARIES ; BLACK-HOLE CANDIDATES ; LENS-THIRRING PRECESSION ; GRS 1915+105 ; CYGNUS X-1 ; TIMING PROPERTIES ; XTE J1550-564 ; HARD STATE ; IRON LINE ; FREQUENCY |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000408111400029 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177007 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Zhang, Liang |
| 作者单位 | 1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 2.Univ Groningen, Kapteyn Astron Inst, POB 800, NL-9700 AV Groningen, Netherlands 3.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China 4.Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England 5.INAF Osservatorio Astron Brera, Via E Bianchi 46, I-23807 Merate, Italy |
| 推荐引用方式 GB/T 7714 | Zhang, Liang,Wang, Yanan,Mendez, Mariano,et al. The evolution of the phase lags associated with the type-c quasi-periodic oscillation in gx 339-4 during the 2006/2007 outburst[J]. Astrophysical journal,2017,845(2):11. |
| APA | Zhang, Liang.,Wang, Yanan.,Mendez, Mariano.,Chen, Li.,Qu, Jinlu.,...&Belloni, Tomaso.(2017).The evolution of the phase lags associated with the type-c quasi-periodic oscillation in gx 339-4 during the 2006/2007 outburst.Astrophysical journal,845(2),11. |
| MLA | Zhang, Liang,et al."The evolution of the phase lags associated with the type-c quasi-periodic oscillation in gx 339-4 during the 2006/2007 outburst".Astrophysical journal 845.2(2017):11. |
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