Evolution of extended extragalactic double radio sources
Evolution of extended extragalactic double radio sources
复制标题
扩展河外双射电源的演化
DOI：
10.1093/mnras/194.4.1025
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发表时间：
1981
期刊：
影响因子：
--
通讯作者：
D. G. Banhatti
中科院分区：
文献类型：
--
作者：
G. Swarup;D. G. Banhatti
本文比较了Ooty占位和3CR样品的河外双射电源两个分量的流量密度比和它们与相应光学天体的角距比。在通量密度超过10比1的范围内，rands的统计特性没有明显的变化。r的分布表明这两个组成部分与母天体分离的平均速度小于约0.2c。同时考虑的therandsdistribution表明，此外，随着年龄的快速演变的无线电组件的光度。另外，观测结果可以通过假设一个不均匀的星系际介质，其密度变化在超过几十kpc的尺度上约为2倍来解释。
A comparison of the flux density ratiossof the two components of extragalactic double radio sources and the ratiosrof their angular separations from the associated optical object has been made for the Ooty occupation and 3CR samples. No marked variation is seen in the statistical properties ofrandsover a range of flux density exceeding 10 to 1. The distribution ofrindicates an average velocity of separation of the two components from the parent object of less than about 0.2c. Simultaneous consideration of therandsdistributions indicates in addition a rapid evolution of the luminosity of radio components with age. Alternatively, the observations can be explained by assuming a non-uniform intergalactic medium with density variations of about a factor of 2 over scales exceeding several tens of kpc.