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:53/0  |  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.  
EVOLUTION OF ANGIOSPERM POLLEN. 6. THE CELASTRALES, OXALIDALES, AND MALPIGHIALES (COM) GLADE AND ZYGOPHYLLALES 期刊论文  OAI收割
ANNALS OF THE MISSOURI BOTANICAL GARDEN, 2018, 卷号: 103, 期号: 3, 页码: 393-442
作者:  
Tao, Zhi-Bin;  Wortley, Alexandra H.;  Lu, Lu;  Li, De-Zhu;  Wang, Hong
  |  收藏  |  浏览/下载:84/0  |  提交时间:2019/03/18
Correlated evolution of sternal keel length and ilium length in birds 期刊论文  OAI收割
PEERJ, 2017, 卷号: 5, 期号: 0, 页码: 1-11
作者:  
Zhao, Tao;  Liu, Di;  Li, Zhiheng
  |  收藏  |  浏览/下载:22/0  |  提交时间:2018/03/22
EVOLUTION OF ANGIOSPERM POLLEN. 3. MONOCOTS 期刊论文  OAI收割
ANNALS OF THE MISSOURI BOTANICAL GARDEN, 2015, 卷号: 101, 期号: 2, 页码: 406-455
作者:  
Luo, Yang;  Lu, Lu;  Wortley, Alexandra H.;  Li, De-Zhu;  Wang, Hong
收藏  |  浏览/下载:150/0  |  提交时间:2016/05/04
Light-induced plasticity in leaf hydraulics, venation, anatomy, and gas exchange in ecologically diverse Hawaiian lobeliads 期刊论文  OAI收割
NEW PHYTOLOGIST, 2015, 卷号: 207, 期号: 1, 页码: 43-58
Scoffoni, C; Kunkle, J; Pasquet-Kok, J; Vuong, C; Patel, AJ; Montgomery, RA; Givnish, TJ; Sack, L
收藏  |  浏览/下载:34/0  |  提交时间:2015/07/10
Correlated evolution among six gene families in Drosophila revealed by parallel change of gene numbers 期刊论文  OAI收割
Genome biology and evolution, 2011, 卷号: 3, 期号: X, 页码: 396-400
作者:  
Wu DD;  Irwin DM;  Zhang YP[*]
收藏  |  浏览/下载:12/0  |  提交时间:2016/03/22
Adaptive Variation in the Vulnerability of Woody Plants to Xylem Cavitation 期刊论文  OAI收割
Ecology, 2004, 卷号: 85, 期号: 8, 页码: 2184-2199
作者:  
Hafiz Maherali;  William T. Pockman;  Robert B. Jackson
  |  收藏  |  浏览/下载:24/0  |  提交时间:2017/07/26
Taxon Sampling, Correlated Evolution, and Independent Contrasts 期刊论文  OAI收割
Evolution, 2000, 卷号: 54, 期号: 5, 页码: 1480-1492
作者:  
David D. Ackerly
  |  收藏  |  浏览/下载:6/0  |  提交时间:2017/07/26