High Resolution Radio Imaging of Circumnuclear Star Formation


Sample images from the VLA of pointlike, jetlike, and ringlike radio morphology at 1'' resolution.

I have conducted an extended observing campagin on the JVLA to obtain 22 GHz radio images for a large sample of hard X-ray selected AGN. The sample contains C-array (1'' resolution) and B-array (0.3'' resolution) images of ~80 nearby active galaxies, corresponding to spatial scales of 70 pc to ~1 kpc. The radio maps show a wide range of morphologies, including star forming rings and mini-jets. Additionally, we have used these spatially decomposed data with a previously-conducted Herschel campaign to confirm the canonical infrared-radio correlation for star forming galaxies still holds in AGN. Additionally, we have used these spatially decomposed data with a previously-conducted Herschel campaign to confirm the canonical infrared-radio correlation for star forming galaxies still holds in AGN. Many papers have made the assumption that this correlation holds for active galaxies at all redshifts, but it has never been tested.


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