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Symmetric Parsec-Scale Radio Jets

By Dayton Jones Jet, Dayton L. Jones and Ann E. Wehrle


. VLBA observations of NGC 4261 (3 reveal highly symmetric radio structures at both 1,6 and 8.4 GHz. There is little evidence for free-free absorption in the inner few pc, despite the fact that HST imaging shows this galaxy to contain a nearly edge-on disk of gas and dust in its nucleus. However, at our highest resolution we find a narrow gap in emission just east of the radio core which we interpret as evidence for a small (sub-parsec) nearly edge-on accretion disk which is obscuring the base of the count erjet. The position angle of the radio axis agrees with the position angle of the jets, which differs from the apparent rotation axis of the nuclear disk seen by HST. 1. Introduction NGC 4261 hosts a classical FR-I radio source (3C 270) whose symmetric scale jets lie along a position angle of 88 1" & Davis 1985). HST observations have revealed that the optical nucleus of this galaxy is surrounded by a disk of gas and dust with a projected rotation axis that differs from the radio ..

Year: 2007
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