DOI

https://doi.org/10.48717/n7mh-rv16

Project

EC088

Title

Nuclear Outflows

Abstract

The high ionization emission lines from the broad-line region (BLR) in AGN, such as C IV line, often show blue excess emission or blueshift, which indicates an outflow component. The typical velocities of about 3,000 km/s, together with the high gas density, imply a potentially high kinetic wind luminosity. This wind can be a significant source for the AGN feedback on the host galaxy. Given the depth of the potential at the BLR, it is unclear how far out this wind proceeds, and whether it interacts with the nuclear environment. To test this, we propose to look for the wind shock radio emission in a sample of five low redshift radio-quiet (RQ) quasars with a strong BLR wind, together with a control sample of five similar objects without a BLR wind. The EVN resolutions will allow to resolve the wind shocks radio emission from a few pc scales, which is just outside the BLR where the wind is launched, out to a hundred pc scales, where it may interact with the host ISM. The RQ nature is important to avoid the jet emission, which strongly dominates in radio-loud quasars and prevents to perform this test.