Morphologies in megaparsec-size powerful radio galaxies
Morphologies in megaparsec-size powerful radio galaxies
复制标题
兆秒差距大小的强大射电星系的形态
DOI：
10.1093/mnras/279.1.257
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发表时间：
1996
影响因子：
4.8
通讯作者：
R. Hunstead
中科院分区：
文献类型：
--
作者：
R. Subrahmanyan;L. Saripalli;R. Hunstead
我们用澳大利亚望远镜呈现了一个强大射电星系样本的射电图像。这些观测被设计成对射电源中最大规模的结构敏感。这些形态代表了具有FRII型结构和大小超过1MPC的射电星系。我们观察到巨型震源与具有相似无线电功率的较小震源具有相同的轴比。此外，与轴对称性的偏离也被观察到从源的线性尺度上小了一个数量级。这些观测表明了强大射电星系形态的自相似演化。
We present radio images with the Australia Telescope of a sample of powerful radio galaxies. The observations were designed to be sensitive to the largest-scale structures in the radio sources. The morphologies are representative of radio galaxies with FRIItype structures and with sizes exceeding 1 Mpc. We observe the giant sources to have the same axial ratios as those in smaller sources with similar radio powers. Moreover, the deviations from axial symmetry are also observed to be linearly scaled from sources an order of magnitude smaller. The observations are indicative of self-similar evolution in the morphologies of powerful radio galaxies.