Compact Radio Sources and Nuclear Activity in Seyfert Galaxies

Abstract

Using recent high-resolution radio observations of a large sample of Seyfert galaxies (Roy et al. 1994), we analyze the relations between the compact radio core emission and several nuclear and host galaxy properties. Seyfert nuclei hosted in early-type galaxies or in object with nearby companions show stronger radio cores than the norm. Radio core emission show some correlation with total radio emission and with tracers of nuclear activity (mid-IR, hard X-ray and narrow-line emissions). This favours the view that Seyfert radio cores are powered by AGN rather than by radio supernovae.

20 pages, latex file with macros included, 7 figures and 6 tables (automatically included)

Cited by in corpus (7)

• Nuclear Luminosities and Radio Loudness of Seyfert Nuclei
• Thick tori around AGN: the case for extended tori and consequences for their X-ray and IR emission
• High-resolution radio observations of Seyfert galaxies in the extended 12-micron sample - I. The observations
• The Nature of Composite LINER/HII Galaxies, As Revealed from High-Resolution VLA Observations
• The Near- and Mid-Infrared Continuum Emission of Seyfert Nuclei: Constraints on the Models of Obscuring Tori
• The relationship between radio power at 22 and 43 GHz and black hole properties of AGN in elliptical galaxies
• Star-Forming AGN Host Galaxies