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浏览/检索结果: 共75条，第1-10条 帮助

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The enigmatic double-peaked stripped-envelope SN 2023aew 期刊论文  OAI收割
Astronomy and Astrophysics, 2024, 卷号: 689
作者:  Kangas, T.;  Kuncarayakti, H.;  Nagao, T.;  Kotak, R.;  Kankare, E.
  |  收藏  |  浏览/下载：23/0  |  提交时间：2024/09/30
Fog/cloud processing of atmospheric aerosols from a single particle perspective: A review of field observations 期刊论文  OAI收割
ATMOSPHERIC ENVIRONMENT, 2024, 卷号: 329, 页码: 17
作者:  Zhang, Guohua;  Peng, Xiaocong;  Sun, Wei;  Yang, Yuxiang;  Liu, Dantong
  |  收藏  |  浏览/下载：14/0  |  提交时间：2024/09/13
The first low-mass eclipsing binary within the fully convective zone from TMTS 期刊论文  OAI收割
Monthly Notices of the Royal Astronomical Society, 2024, 卷号: 531, 期号: 1, 页码: 1765-1775
作者:  Liu, Cheng;  Wang, Xiaofeng;  Zhang, Xiaobing;  Kovalev, Mikhail;  Lin, Jie
  |  收藏  |  浏览/下载：23/0  |  提交时间：2024/06/11
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.  
The first photometric investigation of the contact binary OQ Cam 期刊论文  OAI收割
Research in Astronomy and Astrophysics, 2020, 卷号: 20, 期号: 11, 页码: 179
作者:  Guo, Ya-Ni;  Li, Kai;  Xia, Qi-Qi;  Gao, Xing;  Jiang, Lin-Qiao
  |  收藏  |  浏览/下载：34/0  |  提交时间：2021/06/25
Broad-lined type Ic supernova iPTF16asu: A challenge to all popular models 期刊论文  OAI收割
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2019, 卷号: 489, 期号: 1, 页码: 1110-1119
作者:  Wang, L. J.;  Wang, X. E.;  Cano, Z.;  Wang, S. Q.;  Liu, L. D.
  |  收藏  |  浏览/下载：16/0  |  提交时间：2020/03/10
人工种植条件下荒漠肉苁蓉—梭梭寄生关系的初步研究 学位论文  OAI收割
北京: 中国科学院大学, 2019
作者:  李浙华
  |  收藏  |  浏览/下载：75/0  |  提交时间：2021/12/10
烟台牟平海洋牧场季节性低氧对大型底栖动物群落的生态效应 期刊论文  OAI收割
生物多样性, 2019, 卷号: 27, 期号: 2, 页码: 200-210
作者:  李宝泉
  |  收藏  |  浏览/下载：22/0  |  提交时间：2020/06/17
低氧  群落结构  群落恢复  敏感种  机会种  hypoxia  community structure  community recovery  sensitive species  opportunistic species  Hypoxia is a common phenomenon in the world's oceans, especially in the shallow waters of coastal zones. Rates of hypoxia are increasing due to global climatic changes and anthropogenic activities. Hypoxia can cause mass mortality of marine animals and can have severe negative impacts on marine ecosystems. To better understand the effects of hypoxia on macrobenthic communities, a survey was carried out in the Muping Marine Ranch (Yantai) during June, August and September of 2016. Results showed that seasonal hypoxia led to changes in benthic community structure, especially in terms of species composition and dominant species. The dominant species were Polychaeta Lumbrinereis latreilli, Sternaspis scutata and Mollusca Endopleura lubrica in summer. The opportunistic species Lumbrinereis latreilli increased, whereas, sensitive species such as Leptomya minuta, Glycera chirori, Upogebia major, Pontocrates altamarimus, Eriopisella sechellensis decreased during the hypoxic period of August. Hypoxia also reduced biodiversity indices. The effect of hypoxia on abundance and biomass were not significant, mainly because of the increase in the opportunistic Lumbrinereis latreilli, which counteracted the decline in abundance and biomass of other species. Individual physiological tolerance to hypoxia was different among species. Lumbrinereis latreilli showed higher tolerance to hypoxia in dissolved oxygen (DO) = 1.0 mg/L compared to other species. Some sensitive species, such as Leptomya minuta, Upogebia major, Pontocrates altamarimus and Eriopisella sechellensis showed lower tolerance when DO < 2.5 mg/L. When DO increased to 2.5 mg/L, the macrobenthic community start to recover gradually. The recovery extent and time needed were closely related to the degree of seasonal hypoxia.  
The Influence of the Metal Mass Fraction Z, Age, and Mixing-length Parameter on the RGB Bump Magnitude for the M4 Cluster 期刊论文  OAI收割
ASTROPHYSICAL JOURNAL, 2018, 卷号: 869, 期号: 2, 页码: 15
作者:  Song, Fen;  Li Y(李焱);  Wu T(吴涛);  Pietrinferni, Adriano;  Poon, Helen
  |  收藏  |  浏览/下载：280/0  |  提交时间：2019/01/21
Photometric and Spectroscopic Studies of Four New Low-mass M-type Eclipsing Binaries 期刊论文  OAI收割
ASTRONOMICAL JOURNAL, 2018, 卷号: 156, 期号: 5, 页码: 12
作者:  Long, Liu;  Zhang, Li-Yun;  Han, Xianming L.;  Lu, Hong-Peng;  Pi, Qing-feng
  |  收藏  |  浏览/下载：54/0  |  提交时间：2018/12/10