REIONIZATION

作品数:17被引量:5H指数:1
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相关领域:天文地球核科学技术更多>>
相关作者:陈学雷郭铨更多>>
相关机构:国家天文台中国科学院国家天文台清华大学贵州师范大学更多>>
相关期刊:《Science Bulletin》《International Journal of Astronomy and Astrophysics》《Journal of Modern Physics》《Research in Astronomy and Astrophysics》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国家高技术研究发展计划更多>>
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Measurements of the Dark Matter Mass, Temperature and Spin
《International Journal of Astronomy and Astrophysics》2024年第3期184-202,共19页Bruce Hoeneisen 
We summarize several measurements of the dark matter temperature-to-mass ratio, or equivalently, of the comoving root-mean-square thermal velocity of warm dark matter particles vhrms(1). The most reliable determinatio...
关键词:Warm Dark Matter Dwarf Galaxies Spiral Galaxies Elliptical Galaxies Galaxy Distributions First Galaxies REIONIZATION 
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 
Measurement of the Dark Matter Velocity Dispersion with Galaxy Stellar Masses, UV Luminosities, and Reionization被引量:1
《International Journal of Astronomy and Astrophysics》2022年第3期258-272,共15页Bruce Hoeneisen 
The root-mean-square of non-relativistic warm dark matter particle velocities scales as vhrms(a)=vhrms(1)/a , where a is the expansion parameter of the universe. This velocity dispersion results ...
关键词:Warm Dark Matter Galaxy Stellar Mass Galaxy UV Luminosity REIONIZATION 
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 
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 
My C.G.S.I.S.A.H. Theory of Dark Matter
《Journal of Modern Physics》2019年第8期881-887,共7页Eugene Terry Tatum 
Theory and observations concerning the cosmic reionization epoch are briefly discussed in the context of recent observations attributed to dark matter. A case is made that cold ground state interstellar atomic hydroge...
关键词:DARK Matter Early UNIVERSE REIONIZATION EPOCH DARK AGES Cosmology Observations Galaxies: ISM ISM: Atoms Radio Lines: ISM 
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 
Detection of a possible superluminous supernova in the Epoch of Reionization
《Science Bulletin》2017年第10期675-678,共4页Jeremy Mould Tim Abbott Jeff Cooke Chris Curtin Antonios Katsianis Anton Koekemoer Edoardo Tescari Syed Uddin Lifan Wang Stuart Wyithe 
The data presented herein were obtained at NOAO’s Cerro Tololo Interamerican Observatory, which is operated by AURA for the U.S. National Science Foundation;Funding for the DES Projects has been provided by the DOE and NSF (USA), MISE (Spain), STFC (UK), HEFCE (UK)
The Epoch of Reionization(EoR)poses a number of puzzles,including the sufficiency of ionizing radiation,the rapid production of supermassive black holes and the early appearance of abundant metals in larger galaxies.F...
关键词:超新星 再电离 大质量恒星 检测 光度 恒星演化 电离辐射 EOR 
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 
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