机构

• 遥感与数字地球研究所 [5]
• 国家天文台 [3]
• 西双版纳热带植物园 [2]
• 高能物理研究所 [2]
• 云南天文台 [2]
• 青藏高原研究所 [1]
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• OAI收割 [17]

内容类型

• 期刊论文 [15]
• 会议论文 [2]

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• 2021 [1]
• 2020 [1]
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• Astronomy ... [4]
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筛选

浏览/检索结果: 共17条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 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.   Spectroscopic indices trace spatiotemporal variability of dissolved organic matter in a river system with Karst characteristic 期刊论文  OAI收割 JOURNAL OF HYDROLOGY, 2020, 卷号: 590, 页码: 10 作者:  Ni, Maofei;  Jiang, Shaohua;  Li, Siyue   |  收藏  |  浏览/下载：52/0  |  提交时间：2021/03/01 Optical properties  Spatiotemporal variability  Transport and reactivity  Yangtze (Changjiang)  River continuum   Long-term variations of the PM2.5 concentration identified by MODIS in the tropical rain forest, Southeast Asia 期刊论文  OAI收割 ATMOSPHERIC RESEARCH, 2019, 卷号: 219, 期号: x, 页码: 140-152 作者:  Ma, Yining;  Xin, Jinyuan;  Zhang, Wenyu;  Liu, Zirui;  Ma, Yongjing   |  收藏  |  浏览/下载：103/0  |  提交时间：2019/04/22 Aerosol Optical Depth  Imaging Spectroradiometer Modis  Yangtze-river Delta  Empirical Relationship  Source Apportionment  China  Pollution  Products  Xishuangbanna  Variability   Long-term variations of the PM2.5 concentration identified by MODIS in the tropical rain forest, Southeast Asia 期刊论文  OAI收割 ATMOSPHERIC RESEARCH, 2019, 卷号: 219, 期号: x, 页码: 140-152 作者:  Ma, Yining;  Xin, Jinyuan;  Zhang, Wenyu;  Liu, Zirui;  Ma, Yongjing   |  收藏  |  浏览/下载：89/0  |  提交时间：2019/05/22 Aerosol Optical Depth  Imaging Spectroradiometer Modis  Yangtze-river Delta  Empirical Relationship  Source Apportionment  China  Pollution  Products  Xishuangbanna  Variability   Potential feedback between aerosols and meteorological conditions in a heavy pollution event over the Tibetan Plateau and Indo-Gangetic Plain 期刊论文  OAI收割 CLIMATE DYNAMICS, 2017, 卷号: 48, 期号: 9-10, 页码: 2901-2917 作者:  Yang, JH (Yang, Junhua);  Duan, KQ (Duan, Keqin);  Kang, SC (Kang, Shichang);  Shi, PH (Shi, Peihong);  Ji, ZM (Ji, Zhenming)   |  收藏  |  浏览/下载：38/0  |  提交时间：2018/07/12 REGIONAL CLIMATE MODEL  OPTICAL-PROPERTIES  MONSOON PRECIPITATION  RCP SCENARIOS  MINERAL DUST  CHINA  SIMULATION  AERONET  VARIABILITY  PROJECTION   Improved Salient Feature-Based Approach for Automatically Separating Photosynthetic and Nonphotosynthetic Components Within Terrestrial Lidar Point Cloud Data of Forest Canopies 期刊论文  OAI收割 IEEE Transactions on Geoscience and Remote Sensing, 2016, 卷号: 54, 期号: 2, 页码: 679-696 作者:  Ma, Lixia;  Zheng, Guang;  Eitel, Jan U. H.;  Moskal, L. Monika;  He, Wei 收藏  |  浏览/下载：90/0  |  提交时间：2017/04/24 JANUARY 2013  EASTERN CHINA  OPTICAL-THICKNESS  NORTHERN CHINA  AIR-POLLUTION  HONG-KONG  MODIS  VARIABILITY  RETRIEVAL  QUALITY   Effects of water and heat on growth of winter wheat in the North China Plain 期刊论文  OAI收割 GEOCARTO INTERNATIONAL, 2016, 卷号: 31, 期号: 2, 页码: 210-224 作者:  Wang, Hongyan;  Li, Qiangzi;  Du, Xin;  Lu, Yewei;  Liu, Jilei 收藏  |  浏览/下载：26/0  |  提交时间：2017/04/24 INDO-GANGETIC BASIN  OPTICAL-PROPERTIES  ATMOSPHERIC AEROSOL  SATELLITE  IMPACT  DEPTH  CHINA  VARIABILITY  ABSORPTION  TRANSPORT   Lunar regolith thickness determination from 3D morphology of small fresh craters 期刊论文  OAI收割 ICARUS, 2016, 卷号: 267, 页码: 12-23 作者:  Di, Kaichang;  Sun, Shujuan;  Yue, Zongyu;  Liu, Bin 收藏  |  浏览/下载：40/0  |  提交时间：2017/04/24 AEROSOL OPTICAL DEPTH  BOUNDARY-LAYER  HAZE FORMATION  SATELLITE  VARIABILITY  FEEDBACK  CLOUDS  PLAIN   Spectral-spatial hyperspectral image classification using subspace-based support vector machines and adaptive Markov random fields 期刊论文  OAI收割 Remote Sensing, 2016, 卷号: 8, 期号: 4 作者:  Yu, Haoyang;  Gao, Lianru;  Li, Jun;  Li, Shan Shan;  Zhang, Bing 收藏  |  浏览/下载：24/0  |  提交时间：2017/04/24 EAST CHINA SEA  ABSORPTION-COEFFICIENTS  OPTICAL CLASSIFICATION  ATMOSPHERIC CORRECTION  WATERS  PHYTOPLANKTON  REFLECTANCE  VARIABILITY  ALGORITHMS  PRODUCTS   Did ecological engineering projects have a significant effect on large-scale vegetation restoration in Beijing-Tianjin Sand Source Region, China? A remote sensing approach 期刊论文  OAI收割 CHINESE GEOGRAPHICAL SCIENCE, 2016, 卷号: 26, 期号: 2, 页码: 216-228 作者:  Li Xiaosong;  Wang Hongyan;  Zhou Shufang;  Sun Bin;  Gao Zhihai 收藏  |  浏览/下载：26/0  |  提交时间：2017/04/24 SKY RADIANCE MEASUREMENTS  OPTICAL-PROPERTIES  COAGULATION KERNEL  DEPTH  CLOUD  WATER  VARIABILITY  PARTICLES  INVERSION  POLLUTION