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Synchronous X-ray/Optical QPOs from the Black Hole LMXB MAXI J1820+070 期刊论文  OAI收割
Monthly Notices of the Royal Astronomical Society, 2021
作者:  HXMT
  |  收藏  |  浏览/下载：59/0  |  提交时间：2022/02/08
black hole physics  Low Mass X-ray Binaries  accretion  accretion  discs  stars: individual (MAXI J1820+070)  Astrophysics - High Energy  Astrophysical Phenomena  Abstract: We present high-speed optical photometry from SAAO and SALT on the black hole LMXB MAXI J1820+070 (ASSASN-18ey), some of it simultaneous with NICER, Swift and Insight-HXMT X-ray coverage. We detect optical Quasi-Periodic Oscillations (QPOs) that move to higher frequencies as the outburst progresses, tracking both the frequency and evolution of similar X-ray QPOs previously reported. Correlated X-ray/optical data reveal a complex pattern of lags, including an anti-correlation and a sub-second lag that evolve over the first few weeks of outburst. They also show correlated components separated by a lag equal to the QPO period roughly centered on zero lag, implying that the inter-band variability is strongly and consistently affected by these QPOs at a constant phase lag of roughly ±Ю The synchronisation of X-ray and optical QPOs indicates that they must be produced in regions physically very close to each other  we thus propose that they can be explained by a precessing jet model, based on analogies with V404 Cyg and MAXI J1348-630.  
Timing analysis of Swift J1658.2-4242's outburst in 2018 with Insight-HXMT, NICER and AstroSat 期刊论文  OAI收割
Journal of High Energy Astrophysics, 2019, 卷号: 24, 页码: 30-40
作者:  HXMT
  |  收藏  |  浏览/下载：61/0  |  提交时间：2022/02/08
Accretion  accretion disks  Black hole physics  X-rays: binaries:  Swift J1658.2-4242  Astrophysics - High Energy Astrophysical Phenomena  Abstract: We present the observational results from a detailed timing analysis of the black hole candidate Swift J1658.2-4242 during its 2018 outburst with the observations of Hard X-ray Modulation Telescope (Insight-HXMT), Neutron Star Interior Composition Explorer (NICER) and AstroSat in 0.1-250 keV. The evolution of intensity, hardness and integrated fractional root mean square (rms) observed by Insight-HXMT and NICER are presented in this paper. Type-C quasi-periodic oscillations (QPOs) observed by NICER (0.8-3.5 Hz) and Insight-HXMT (1-1.6 Hz) are also reported in this work. The features of the QPOs are analyzed with an energy range of 0.5-50 keV. The relations between QPO frequency and other characteristics such as intensity, hardness and QPO rms are carefully studied. The timing and spectral properties indicate that Swift J1658.2-4242 is a black hole binary system. Besides, the rms spectra of the source calculated from the simultaneous observation of Insight-HXMT, NICER and AstroSat support the Lense-Thirring origin of the QPOs. The relation between QPO phase lag and the centroid frequency of Swift J1658.2-4242 reveals a near zero constant when < 4Hz and a soft phase lag at 6.68 Hz. This independence follows the same trend as the high inclination galactic black hole binaries such as MAXI J1659-152.  
GRS 1915+105 QPO 特性与光子能量关系研究 学位论文  OAI收割
硕士: 中国科学院研究生院, 2011
作者:  鄢淑平
收藏  |  浏览/下载：50/0  |  提交时间：2013/03/14
中子星X射线双星中kHz QPO现象的理论解释 期刊论文  OAI收割
天文学进展, 2011, 期号: 3, 页码: 277-290
作者:  王静;  张承民;  尹红星;  宋黎明;  屈进禄
收藏  |  浏览/下载：19/0  |  提交时间：2015/12/15
The emission positions of kHz QPOs and Kerr spacetime influence 期刊论文  OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2010, 卷号: 53, 期号: Suppl. 1, 页码: 114-116
作者:  Zhang ChengMin;  Wei YingChun;  Yin HongXing;  Zhao YongHeng;  Lei YaJuan
收藏  |  浏览/下载：26/0  |  提交时间：2015/08/25
The time lag spectrum of Cir X-1 on its normal branch 期刊论文  OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2010, 卷号: 53, 期号: 增刊1, 页码: 60-63
作者:  Qu JinLu;  Lu Yu;  Ding GuoQiang;  Zhang Fan;  Lei YaJuan
收藏  |  浏览/下载：23/0  |  提交时间：2013/03/06
The time lag spectrum of Cir X-1 on its normal branch 期刊论文  OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2010, 卷号: 53, 期号: 1, 页码: #REF!
作者:  Qu JL(屈进禄);  Lu Y(卢宇);  Zhang F(张帆);  Lei YJ(雷亚娟);  Li ZB(李志兵)
收藏  |  浏览/下载：33/0  |  提交时间：2016/04/11
The emission positions of kHz QPOs and Kerr spacetime influence 期刊论文  OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2010, 卷号: 53, 期号: 1, 页码: #REF!
作者:  Zhang, CM;  Wei, YC;  Yin, HX;  Zhao, YH;  Lei, YJ
收藏  |  浏览/下载：27/0  |  提交时间：2016/04/12
The emission positions of kHz QPOs and Kerr spacetime influence 期刊论文  OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2010, 卷号: 53, 页码: 114-116
作者:  Zhang ChengMin;  Wei YingChun;  Yin HongXing;  Zhao YongHeng;  Lei YaJuan
收藏  |  浏览/下载：27/0  |  提交时间：2017/04/19
Correlation between the kilohertz quasi-periodic oscillation and energy spectrum of Aql X-1 期刊论文  OAI收割
CHINESE ASTRONOMY AND ASTROPHYSICS, 2000, 卷号: 24, 期号: 2, 页码: #REF!
作者:  Qu JL(屈进禄);  Yu WF(余文飞);  Li TB(李惕碚);  Qu, JL;  Yu, WF
收藏  |  浏览/下载：16/0  |  提交时间：2016/04/12