Radio-loud narrow-line Seyfert 1 galaxies with high-velocity outflows
Abstract
We have studied four radio-loud Narrow-line Seyfert 1 (NLS1) galaxies with extreme optical emission-line shifts, indicating radial outflow velocities of up 2450 km s-1. The shifts are accompanied by strong line broadening, up to 2270 km s-1 in [NeV]. A significant ionization stratification (higher line shift at higher ionization potential) of most ions implies that we see a large-scale wind rather than single, localized jet-cloud interactions. The observations are consistent with a scenario, where the signatures of outflows are maximized because of a pole-on view into the central engine of these radio-loud NLS1 galaxies.
- Publication:
-
Star Clusters and Black Holes in Galaxies across Cosmic Time
- Pub Date:
- February 2016
- DOI:
- 10.1017/S1743921315007498
- Bibcode:
- 2016IAUS..312...63K
- Keywords:
-
- Black holes;
- galaxies;
- emission lines;
- outflows;
- jets