Radio and γ-ray loud narrow-line Seyfert 1 galaxies in the spotlight. Issue Volume 12:Issue S324(2016) (23rd June 2017)

• Record Type: Journal Article
• Authors: Karamanavis, V.; Angelakis, E.; Komossa, S.; Myserlis, I.; Blinov, D.; Zensus, J. A.
• Editors: Gomboc, Andreja
• Is Part Of: Proceedings of the International Astronomical Union. Volume 12:Issue S324(2016)
• Page Start: 184
• Page End: 187
• Publication Date: 2017-06-23
• Subjects: galaxies: active, -- galaxies: jets, -- galaxies: Seyfert, -- radio continuum: galaxies; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921317001065
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: Narrow-line Seyfert 1 (NLS1) galaxies provide us with unique insights into the drivers of AGN activity under extreme conditions. Given their low black hole (BH) masses and near-Eddington accretion rates, they represent a class of galaxies with rapidly growing supermassive BHs in the local universe. Here, we present the results from our multi-frequency radio monitoring of a sample of γ-ray loud NLS1 galaxies (γNLS1s), including systems discovered only recently, and featuring both the nearest and the most distant γNLS1s known to date. We also present high-resolution radio imaging of 1H 0323+342, which is remarkable for its spiral or ring-like host. Finally, we present new radio data of the candidate γ-emitting NLS1 galaxy RX J2314.9+2243, characterized by a very steep radio spectrum, unlike other γNLS1s.