Colloq Abstract - Fischer
October 6, 2023
11:00am Mountain
Travis Fischer (STScI)
Let's Talk About Jets: Analysing Extranuclear Radio Sources in Radio-Quiet AGN
Abstract
We present multi-wavelength, spatially-resolved imaging and spectroscopy in effort to study the characteristics of the extranuclear radio emission in nearby radio-quiet AGN. From our recent studies, we have noted that radio structures in previous analyses of these objects align and intertwine with their optical Narrow-Line Regions (NLRs), which represent the intersection between AGN ionization and host galaxy disk material. We hypothesize that radiatively-driven winds, launched from small radii, impact dense gas lanes at larger distances and produce shocks, with relativistic particles accelerated in the shocks in turn producing localized synchrotron radio emission similar to processes in supernova remnants. In this scenario, the observed radio emission is then a byproduct that occurs only at locations where winds are producing shocks in the radio-quiet AGN host galaxy. As this hypothesis lies in tension with the standard paradigm of radio structures in AGN, we present further testing on the radio structures observed in several AGN to provide evidence for this scenario on how active black holes produce feedback and interact with the interstellar medium in their host galaxies.
Local Host: Amy Kimball
