Multifrequency studies of seven 3CR radio sources – II. Results and interpretation
Multifrequency studies of seven 3CR radio sources – II. Results and interpretation
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七个 3CR 无线电源的多频率研究 – 结果和解释
DOI：
10.1093/mnras/186.3.519
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
S. Burch
中科院分区：
文献类型：
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作者：
S. Burch
详细研究了3C47、3C79、3C219、3C234、3C300、3C382和3C430两个河外射电源。这项研究基于5公里望远镜2.7 GHz和15 GHz以及1英里望远镜1.4 GHz的地图。1.4 GHz和2.7 GHz的观测被用来获得源的旋转测量和去极化的分布。开发了蒙特卡罗模拟程序来解释这些数据，并推导出关于源组件内的热电子密度和磁场组态的信息。给出了3C47、3C79、3C219、3C300和3C382的磁场方向图，比较了1.4、2.7和15 GHz的磁场方向图，并与之前发表的5 GHz的5 GHz图进行了比较，得到了每个源内桥和头的光谱指数的估计值。在3C219和3C382的扩展桥区发现了电子再加速的一些证据，其光谱、极化和形态信息符合双射电源的连续流模型。
A detailed study of the double extragalactic radio sources 3C 47, 3C 79, 3C 219, 3C 234, 3C 300, 3C 382, and 3C 430 is presented. The study is based on maps at 2.7 and 15 GHz from the 5-km telescope and at 1.4 GHz from the One-Mile telescope.The observations at 1.4 and 2.7 GHz are used to obtain distributions of rotation measure and depolarization across the sources. A Monte Carlo modelling procedure is developed to interpret these data and to derive information about the thermal electron densities and magnetic field configurations within the source components. Maps of the magnetic field directions within 3C 47, 3C 79, 3C 219, 3C 300 and 3C 382 are given.The maps at 1.4, 2.7 and 15 GHz are compared with each other and with previously published maps at 5 GHz from the 5-km telescope to obtain estimates of the spectral indices of the bridges and heads within each source. Some evidence for re-acceleration of electrons in the extended bridge regions of 3C 219 and 3C 382 is found.The spectral, polarization and morphological information is consistent with a continuous-flow model for double radio sources.