A Survey of Kiloparsec-Scale Radio Outflows in Radio-Quiet Active Galactic Nuclei

Seyfert galaxies commonly host compact jets spanning 10-100 pc scales, butlarger structures (KSRs) are resolved out in long baseline, aperture synthesissurveys. We report a new, short baseline Very Large Array (VLA) survey of acomplete sample of Seyfert and LINER galaxies. Out of all of the surveyedradio-quiet sources, we find that 44% (19 / 43) show extended radio structuresat least 1 kpc in total extent that do not match the morphology of the disk orits associated star-forming regions. The KSR Seyferts stand out by deviatingsignificantly from the far-infrared - radio correlation for star-forminggalaxies, and they are more likely to have a relatively luminous, compact radiosource in the nucleus; these results argue that KSRs are powered by the AGNrather than starburst. KSRs probably originate from jet plasma that has beendecelerated by interaction with the nuclear ISM. We demonstrate the jet losesvirtually all of its power to the ISM within the inner kiloparsec to form theslow KSRs.Comment: to appear in the Astronomical Journal, Vol 132 (projected