Radio-Quiet AGN: Spectral Indices, Morphologies, and Feedback Mechanisms
Abstract
We have completed the final phase of a 22 GHz 1" VLA imaging survey of 268 radio-quiet X-ray-selected AGN from the Swift-BAT survey. In the final phase (129 AGN), we detected radio cores in all but one AGN, and only one image was ruined by RFI banding. We have also compiled archival low frequency radio data of our targets. The low frequency radio data allows for us to understand the feedback mechanisms from the AGN. Outflows that may be present at lower frequencies can be resolved at 22 GHz, so a low frequency approach is necessary to fully understand the outflows. By combining our survey and optical integral field unit imaging from the MUSE instrument on the VLT, we explore the relationship between kiloparsec scale radio structures and gas kinematics, revealing a significant feedback process. Within the Swift-BAT survey, we also detected additional radio sources near the target AGN. Some of these objects have no optical counterpart, making them hard to study. By using archival low frequency radio data to calculate the spectral index, we can both better understand the mechanisms in AGN and identify these extra radio sources. One random radio source corresponds to an ultra-luminous X-ray source, a likely intermediate mass black hole; the spectral index is consistent with this and not an ultraluminous pulsar.
- Publication:
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American Astronomical Society Meeting Abstracts
- Pub Date:
- January 2023
- Bibcode:
- 2023AAS...24120101M