| 射电源法拉第旋率观测效应的模拟研究 |
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| 引用本文： | 徐钧,韩金林.射电源法拉第旋率观测效应的模拟研究[J].天文学报,2011,52(4):332-338. |
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| 作者姓名： | 徐钧 韩金林 |
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| 作者单位： | 1. 中国科学院国家天文台 北京 100012;中国科学院研究生院 北京 100049
2. 中国科学院国家天文台 北京 100012 |
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| 基金项目： | 国家自然科学基金(10821061和10833003); 国家科技部973项目(2007CB815403)资助 |
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| 摘 要： | 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偏振参量测量的干扰形式与干扰源的RM值有关.只运用两三个...
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| 关 键 词： | 望远镜 辐射机制:非热 偏振 星际介质:磁场 |
Simulation Studies on Faraday Rotation Measure Observations of Radio Sources |
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| XU Jun,HAN Jin-lin.Simulation Studies on Faraday Rotation Measure Observations of Radio Sources[J].Acta Astronomica Sinica,2011,52(4):332-338. |
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| Authors: | XU Jun HAN Jin-lin |
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| Institution: | XU Jun~(1,2) HAN Jin-lin~1 (1 National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012) (2 Graduate University of Chinese Academy of Sciences,Beijing 100049) |
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| Abstract: | In the beam of a radio telescope,background radio sources may appear around a target radio source.The polarized radio emission of these background radio sources will influence the polarization measurements of the target source.Through simulation studies on the cases of a single and multiple polarized background radio sources,it is found that if we only measure the polarization parameters at two or three frequencies,the derived rotation measures(RMs) and other polarization parameters of the target radio sour... |
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| Keywords: | telescopes radiation mechanisms:non-thermal polarization ISM:magnetic fields |
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