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河外射电源子源抛射和膨胀的相对论效应

ON THE ROLE OF RELATIVISTIC EFFECTS IN THE EJECTION AND EXPANSION OF COMPONENTS OF EXTRAGALACTIC DOUBLE RADIO SOURCES

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【作者】 梁宝鎏;

【Author】 LIANG BAO-LIU (Beijing Observatory, Academia Sinica)

【机构】 中国科学院北京天文台;

【摘要】 本文根据狭义相对论,推导出向任意方向高速抛射和膨胀的球体在远处所见形态的表达公式,并利用较完整的81个典型射电双源资料,对比了双源的大小比值、流量比值和它们的母体分离比值间的关系后,发现单纯用相对论效应来分析延展射电双源的观测特征是困难的.子源的抛射锥和它对母体的线分离之间似乎有一定的相关性,它反映了在延展双源阶段,子源膨胀基本上已停止.

【Abstract】 According to the special theory of relativity, we have derived formulae which express the shape of an ejecting with high velocity and expanding spherical body as seen from a distance. Using a more complete sample of 81 typical double radio sources, we compare the diameter ratio and the flux density ratio of two components with their separations from the optical object respectively. It was found that it seems hardly possible to analyze the observational characteristics of the extended double radio sources based on the relativistic effects alone. There seems to be a correlation between the "Cones of ejection" and linear separations for the components, and the expansion of the components practically ceased in the stage of extended double soures.

  • 【文献出处】 天文学报 ,Acta Astronomica Sinica , 编辑部邮箱 ,1980年03期
  • 【被引频次】2
  • 【下载频次】15
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