云南高校图书馆联盟文献共享服务平台- 国家自然科学基金(10833003)

国家自然科学基金(10833003): 作品数：12被引量：8H指数：2; 导出分析报告; 相关作者：韩金林徐钧庞峰邹磊董宾更多>>; 相关机构：中国科学院国家天文台中国科学院大学中国科学院研究生院中国电子科技集团公司第三十九研究所更多>>; 相关期刊：《电子与信息学报》《天文学报》《Science China(Physics,Mechanics & Astronomy)》《Research in Astronomy and Astrophysics》更多>>; 相关主题：PULSARSGENERALGALAXIESCLUSTERS偏振更多>>; 相关领域：天文地球电子电信理学自动化与计算机技术更多>>

A digital pulsar backend based on FPGA: 《Research in Astronomy and Astrophysics》2017年第1期97-102,共6页Jin-Tao Luo Lan Chen Jin-Lin Han Ali Esamdin Ya-Jun Wu Zhi-Xuan Li Long-Fei Hao Xiu-Zhong Zhang; supported by the National Natural Science Foundation of China(Grant Nos.10821061 and10833003); A digital pulsar backend based on a Field Programmable Gate Array （FPGA） is developed. It is designed for incoherent de-dispersion of pulsar observations and has a maximum bandwidth of 512MHz. The channel bandwidth ...; 关键词：INSTRUMENTATION miscellaneous - methods data analysis - pulsars GENERAL

一种性能改进了的大张角四脊型超宽带馈源的研制被引量：3: 《电子与信息学报》2014年第10期2509-2514,共6页董宾韩金林沈泉于京龙庞峰邹磊; 国家自然科学基金(10833003)资助课题; 超宽带馈源在通信和射电天文等领域有着极高的应用价值。四脊喇叭作为宽带馈源的一种重要形式，存在着反射损耗性能较差，方向图随频率波动严重，照明张角难以拓展等诸多缺陷。本文基于国际上已有的研究基础，设计了一款工作于1.2~6.8 ...; 关键词：反射面天线超宽带馈源四脊喇叭反射损耗边缘照明角

射电天空与观测源分布可视化软件: 《天文研究与技术》2014年第3期305-310,共6页喻业钊韩金林; 国家自然科学基金(10833003)资助; 射电天文观测需要事先对射电源分布及天空背景有清晰的了解。目前国内射电天文台站缺乏射电天空与观测源分布可视化软件来对射电天空背景和观测源进行显示。开发一款简洁、移植性强的可视化软件,方便观测者直观地了解射电天空,帮助他们...; 关键词：射电天文可视化软件 PGPLOT 开源软件

A new method to analyse pulsar nulling phenomenon: 《Science China(Physics,Mechanics & Astronomy)》2014年第8期1600-1606,共7页YANG AiYuan HAN JinLin WANG Na; supported by China Ministry of Science and Technology(Grant No.2013CB837900);the National Natural Science Foundationof China(Grant Nos.10833003,11003023,11273029 and 11261140641); Pulsar hulling is a phenomenon of sudden cessation of pulse emission for a number of periods. The nulling fraction was often used to characterize the phenomenon. We propose a new method to analyse pulsar hulling pheno...; 关键词：PULSARS radio sources radiation mechanisms

Repeated Compton scattering in a strong magnetic field: 《Science China(Physics,Mechanics & Astronomy)》2012年第10期1931-1937,共7页WANG PengFei CHOU ChihKang HAN JinLin; supported by the National Natural Science Foundation of China (Grant Nos. Y011091001,11003023 and 10833003); Repeated scatterings of unpolarized photons by non-relativistic electrons in a static and uniform magnetic field are investigated by using the Boltzmann equation with quantum mechanical correction factors for the stim...; 关键词：electromagnetic waves： magnetospheric propagation X-ray scattering： interactions with matter neutron stars

Lensing clusters of galaxies in the SDSS-Ⅲ被引量：1: 《Research in Astronomy and Astrophysics》2011年第10期1185-1198,共14页Zhong-Lue Wen Jin-Lin Han Yun-Ying Jiang; Supported by the National Natural Science Foundation of China(Grant Nos. 10821061, 10833003 and 11103032);Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences and the National Key Basic Research Science Foundation of China (2007CB815403);Funding for SDSS-III has been provided by the Alfred P.Sloan Foundation,the Participating Institutions,the National Science Foundation and the U.S.Department of Energy; We identify new strong lensing clusters of galaxies from the Sloan Digital Sky Survey Ⅲ （SDSS DR8） by visually inspecting color images of a large sample of clusters of galaxies. We find 68 new clusters showing gian...; 关键词：GALAXIES CLUSTERS general -- gravitational lensing

射电源法拉第旋率观测效应的模拟研究被引量：1: 《天文学报》2011年第4期332-338,共7页徐钧韩金林; 国家自然科学基金(10821061和10833003);国家科技部973项目(2007CB815403)资助; 由于受射电望远镜分辨率的限制,观测视线方向上可能有多源重叠现象.观测目标源的法拉第旋率(rotation measure,RM)及偏振角(polarization angle,PA)的测量值就会受到方向束内其它背景射电源的影响.通过模拟研究发现,背景射电源对目标源...; 关键词：望远镜辐射机制非热偏振星际介质:磁场

Possible distance indicators in gamma-ray pulsars: 《Research in Astronomy and Astrophysics》2011年第7期824-832,共9页Wei Wang; supported by the National Natural Science Foundation of China(Grant Nos.10803009,10833003 and 11073030); Distance measurement of gamma-ray pulsars is a current challenge in pulsar studies.The Large Area Telescope（LAT） aboard the Fermi gamma-ray observatory discovered more than 70 gamma-ray pulsars including 24 new gamm...; 关键词：gamma rays：general—pulsars：general—stars：neutron

脉冲星脉冲宽度的测量方法被引量：1: 《天文学报》2011年第3期180-189,共10页徐钧韩金林王陈; 国家自然科学基金项目(10821061和10833003)资助; 脉冲宽度的测量方法有几种.最常用的脉冲宽度有W_(pp)(两峰值点的间距)、W_(50)(最高峰值强度50%处的宽度)和W_(10)(最高峰值强度10%处的宽度).另外,还有测量两个最外成分各自强度50%处的宽度W_(c50)和各自强度10%处的宽度W_(c10).利用1...; 关键词：脉冲星普通偏振恒星中子

The best detection conditions for pulsars in the Galactic disk被引量：1: 《Science China(Physics,Mechanics & Astronomy)》2011年第3期552-557,共6页XU XiangYang WANG Chen HAN JinLin HU Lin; supported by the National Natural Science Foundation of China (Grant Nos. 10773016, 10821001 and 10833003);the Initialization Fund for President Award Winner of Chinese Academy of Sciences; Radio detection of pulsars in the Galactic disk is strongly affected by the dispersion and scattering effect of the interstellar medium and the Galactic background radio emission. In order to know the best conditions ...; 关键词：pulsars neutron stars radio telescopes scattering of electromagnetic radiation in plasmas

国家自然科学基金(10833003)