Detection of the VLBI-scale Counter Jet in NGC 6251

(2) NAOJ); H. Sudou (1); M. Inoue(2); O. Kaburaki(1); S. Kameno (2); S. Sasao(2) ((1) Tohoku University; S. Sawada-Satoh(2); Y. Ohyama (2); Y. Taniguchi (1)

arxiv: astro-ph/0004139 · v2 · submitted 2000-04-11 · 🌌 astro-ph

Detection of the VLBI-scale Counter Jet in NGC 6251

H. Sudou (1) , Y. Taniguchi (1) , Y. Ohyama (2) , S. Kameno (2) , S. Sawada-Satoh(2) , M. Inoue(2) , O. Kaburaki(1) , S. Sasao(2) ((1) Tohoku University

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(2) NAOJ)

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keywords radiocountergalaxyaccelerationallowsbeamingcentraldetection

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Mapping the central 5 pc region of the nearby radio galaxy NGC 6251 with a 0.2 pc resolution using VLBI at two radio frequencies, 5 GHz and 15 GHz, we have found the sub-pc-scale counter jet for the first time in this radio galaxy. This discovery allows us to investigate the jet acceleration based on the relativistic beaming model (Ghisellini et al. 1993).

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Detection of the VLBI-scale Counter Jet in NGC 6251

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