Bidirectional motion observed in the compact symmetric object 1946+708.
收藏PubMed Central1995-12-05 更新2026-05-02 收录
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https://pmc.ncbi.nlm.nih.gov/articles/PMC40405/
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资源简介：
We present the first direct measurements of bidirectional motions in an extragalactic radio jet. The radio source 1946+708 is a compact symmetric object with striking S-symmetry identified with a galaxy at a redshift of 0.101. From observations 2 years apart we have determined the velocities of four compact components in the jet, the fastest of which has an apparent velocity of 1.09 h-1c. By pairing up the components, assuming they were simultaneously ejected in opposite directions, we derive a 1 lower limit on the Hubble constant, H0 > 42 km.s-1.Mpc-1.
提供机构：
National Academy of Sciences
创建时间：
1995-12-05
