Detection of the VLBI-scale Counter Jet in NGC 6251

H. Sudou, Y. Taniguchi, Y. Ohyama +5

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 c…