云南高校图书馆联盟文献共享服务平台- AGES

AGES: 作品数：645被引量：2205H指数：19; 导出分析报告; 相关领域：医药卫生更多>>; 相关作者：吴茜许惠琴周梦舟孙子林柳志杰更多>>; 相关机构：南京中医药大学湖北工业大学河北医科大学东南大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划江苏省自然科学基金中国博士后科学基金更多>>

Reionizing Islands with Inhomogeneous Recombinations: 《Research in Astronomy and Astrophysics》2023年第6期172-186,共15页朱润玉徐怡冬岳斌陈学雷; supported by the National Key R&D Program of China No.2018YFE0120800;the National Natural Science Foundation of China grant No.11973047;the National Key R&D Program of China No.2022YFF0504300;the National SKA Program of China Nos.2020SKA0110401,and 2020SKA0110402。; Observations are beginning to constrain the history of the epoch of reionization(EoR).Modeling the reionization process is indispensable to interpret the observations,to infer the properties of ionizing sources,and to...; 关键词：(cosmology:)dark ages REIONIZATION first stars (galaxies:)intergalactic medium (cosmology:)large-scale structure of universe galaxies:high-redshift

Estimation of HⅡBubble Size Distribution from 21 cm Power Spectrum with Artificial Neural Networks: 《Research in Astronomy and Astrophysics》2022年第3期285-296,共12页Hayato Shimabukuro Yi Mao Jianrong Tan; supported by the National SKA Program of China(Grant No.2020SKA0110401);NSFC(Grant Nos.12103044,11821303 and 11850410429);National Key R&D Program of China(Grant No.2018YFA0404502);supported in part by grants from Yunnan University。; The bubble size distribution of ionized hydrogen regions probes information about the morphology of HⅡbubbles during reionization.Conventionally,the HⅡbubble size distribution can be derived from the tomographic ima...; 关键词：methods:data analysis methods:numerical (cosmology:)dark ages REIONIZATION first stars (cosmology:)diffuse radiation cosmology:theory

External calibrator in global signal experiment for detection of the epoch of reionization: 《Research in Astronomy and Astrophysics》2021年第10期17-26,共10页Yan Huang Xiang-Ping Wu Quan Guo Qian Zheng Bi-Ying Li Huan-Yuan Shan Ke-Jia Lee Hai-Guang Xu; supported by the Key Projects of Frontier Science of Chinese Academy of Sciences(Grant No.QYZDY-SSW-SLH022);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB23000000);the National Key R&D Program of China(Grant No.2018YFA0404601)。; We present a conceptual design study of external calibrators in the 21 cm experiment towards detecting the globally averaged radiation of the epoch of reionization(EoR).Employment of external calibrator instead of int...; 关键词：cosmology:observations dark ages REIONIZATION radio lines:general methods:observational

Estimation of ages and masses via carbon and nitrogen abundances for 556 007 giants from LAMOST: 《Research in Astronomy and Astrophysics》2021年第9期29-43,共15页Xu Zhang Sven Buder Ya-Qian Wu Gang Zhao; supported by the National Natural Science Foundation of China(Grant Nos.11988101,11890694);National Key R&D Program of China(No.2019YFA0405502);China Scholarship Council。; Estimating ages for a large number of giants is of great importance for studying Galactic evolution.In this work,we determine stellar ages and masses for 556007 giants from LAMOST Data Release 5(DR5)with empirical rel...; 关键词：stars:fundamental parameters Galaxy:structure Galaxy:evolution Galaxy:abundances

The temperature of IGM at high redshifts:shock heating and high mach problem: 《Research in Astronomy and Astrophysics》2020年第6期253-264,共12页Jun-Yi Jia Wei-Shan Zhu Liang Gao Long-Long Feng; supported by the National Key R&D Program of China(No.2017YFB0203300);and the Key Program of the National Natural Science Foundation of China(NFSC,Grant No.11733010);W.S.Z.acknowledges support from the NSFC(Grant No.11673077);F.L.L.is supported by the NSFC(Grant No.11333008);the State Key Development Program for Basic Research of China(2015CB857000)。; The thermal history of cosmic gas in the dark ages remains largely unknown.It is important to quantify the impact of relevant physics on the IGM temperature between z=10 and z^30,in order to interpret recent and oncom...; 关键词：COSMOLOGY theory-dark ages reionization first stars-galaxies high-redshift-intergalactic medium

Extracting 21 cm signal by frequency and angular filtering被引量：1: 《Research in Astronomy and Astrophysics》2018年第9期101-112,共12页Qi-Zhi Huang Feng-Quan Wu Reza Ansari Xuelei Chen; supported by the Ministry of Science and Technology(2016YFE0100300);the National Natural Science Foundation of China(Grant Nos.11473044,U1501501,U1631118 and 11633004);the Chinese Academy of Sciences(QYZDJ-SSW-SLH017);support by the CSC Cai Yuanpei grant; Extracting the neutral hydrogen （HI） signal is a great challenge for cosmological 21 cm experiments; both the astrophysical foregrounds and receiver noise are typically several orders of magnitude greater than the 2...; 关键词：methods： data analysis - （cosmology：） dark ages REIONIZATION first stars - cosmology：observations

Cross-correlation of 21 cm and soft X-ray backgrounds during the epoch of reionization: 《Research in Astronomy and Astrophysics》2016年第8期135-144,共10页Jun-Min Liang Xiao-Chun Mao Bo Qin; supported by the National Natural Science Foundation of China(Grant Nos.11473031,11261140641 and 11173028);the 973 Program(Grant No.2013CB837900); The cross-correlation between the high-redshift 21 cm background and the Soft X-ray Background （SXB） of the Universe may provide an additional probe of the Epoch of Reionization. Here we use semi-numerical simulatio...; 关键词：cosmic background radiation -- cosmology： theory -- dark ages REIONIZATION first stars --early Universe -- diffuse radiation -- X-rays： diffuse background

The radio environment of the 21 Centimeter Array:RFI detection and mitigation被引量：3: 《Research in Astronomy and Astrophysics》2016年第2期135-144,共10页Yah Huang Xiang-Ping Wu Qian Zheng Jun-Hua Gu Haiguang Xu; partially supported by the National Natural Science Foundation of China(Grant No.11433002);support by a Marsden Fund grant in New Zealand; Detection and mitigation of radio frequency interference （RFI） is the first and also the key step for data processing in radio observations, especially for ongoing low frequency radio experiments towards the detecti...; 关键词：dark ages reionization first stars -- instrumentation interferometers -- methods data anal-ysis observational -- techniques： interferometric

The reliability of age measurements for Young Stellar Objects from Hertzsprung-Russell or color-magnitude diagrams: 《Research in Astronomy and Astrophysics》2012年第1期1-25,共25页Thomas Preibisch; The possibility to estimate ages and masses of Young Stellar Objects （YSOs） from their location in the Hertzsprnng-Russell diagram （HRD） or a color- magnitude diagram provides a very important tool for the investi...; 关键词：stars： ages -- stars： pre-main sequence -- stars： formation --Hertzsprung-Russell diagram

Stellar ages and metallicities of nearby elliptical galaxies: 《Research in Astronomy and Astrophysics》2009年第11期1215-1229,共15页Bai-Tian Tang Qiu-Sheng Gu Song Huang; supported by the Program for New Century Excellent Talents in University(NCET);the National Natural Science Foundation of China (Grant Nos.10878010,10221001 and 10633040);the National Basic Research Program (973 program No. 2007CB815405);supported by the Brazilian agencies CNPq, CAPES and FAPESP ;by the France-Brazil CAPES/Cofecub program; Stellar ages and metallicities are crucial for understanding the formation and evolution of elliptical galaxies. However, due to the age-metallicity degeneracy, it is hard to measure these two parameters accurately wi...; 关键词：GALAXIES elliptical and lenticular cD -- galaxies statistics -- galaxies stellar content

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