中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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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:52/0  |  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.  
The Temporal Phenomena of Black Hole Transient XTE J1650-500 in Its 2001-2002 Outburst 期刊论文  OAI收割
CHINESE ASTRONOMY AND ASTROPHYSICS, 2018, 卷号: 42, 期号: 1, 页码: 48-68
作者:  
Chen Li;  Lu Yu;  Yan Lin-li;  Li Zi-jian;  Qu JL(屈进禄)
  |  收藏  |  浏览/下载:20/0  |  提交时间:2019/09/24
Spatial discretization of distributed hydrological response units for SWAT 会议论文  OAI收割
Remote Sensing and Modeling of Ecosystems for Sustainability XI, San Diego, CA, United states, August 18, 2014 - August 20, 2014
作者:  
Gao, Zhiqiang
收藏  |  浏览/下载:37/0  |  提交时间:2015/08/10
A time lag insensitive approach for estimating HIV-1 transmission direction 期刊论文  OAI收割
AIDS, 2012, 卷号: 26, 期号: 8, 页码: 921-928
Yang, Jing; Ge, Meng; Pan, XianMing; 潘宪明
收藏  |  浏览/下载:17/0  |  提交时间:2013/12/24
Hard X-ray lags of Cygnus X-1 on short timescales 期刊论文  OAI收割
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2010, 卷号: 53, 期号: 1, 页码: #REF!
作者:  
Jin, J;  Lu Y(卢宇);  Qu JL(屈进禄);  Li TB(李惕碚);  Lu, Y
收藏  |  浏览/下载:16/0  |  提交时间:2016/04/12
Using GM (1,1) models to predict groundwater level in the lower reaches of Tarim River: A demonstration at Yingsu section 会议论文  OAI收割
5th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD, Jinan, Shandong, China, 2008
Xu; Jianhua1; Chen; Yaning2; Li; Weihong2
收藏  |  浏览/下载:28/0  |  提交时间:2011/08/23