VLA and VLBA observations of compact radio cores in LINER galaxies
Falcke, Heino · Ho, Luis C. · Ulvestad, James S. · Wilson, Andrew S. · Nagar, Neil M.
Original · EN
A VLA survey of nearby LINER galaxies at 15 GHz has revealed the presence of a compact radio core in many sources. The cores seem to be correlated with the optical activity. Follow-up VLBA observations of the ten brightest sources confirm that these cores have brightness temperatures >10⁸ Kelvin, thus confirming their AGN nature. The two brightest radio sources (NGC6500 and NGC4278) show extended jet-like structures and the flat spectral indices of all cores also suggest a jet nature rather than emission from an ADAF.
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