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Radio and γ-ray loud narrow-line Seyfert 1 galaxies in the spotlight

Published online by Cambridge University Press:  23 June 2017

V. Karamanavis Open the ORCID record for V. Karamanavis [Opens in a new window] ,
E. Angelakis ,
S. Komossa ,
I. Myserlis ,
D. Blinov  and
J. A. Zensus
V. Karamanavis
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany email: vkaramanavis@mpifr.de
E. Angelakis
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany email: vkaramanavis@mpifr.de
S. Komossa
Affiliation:
QianNan Normal University for Nationalities, Longshan Street, Duyun, Guizhou, China
I. Myserlis
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany email: vkaramanavis@mpifr.de
D. Blinov
Affiliation:
Department of Physics and Institute of Theoretical and Computational Physics, University of Crete, 71003 Heraklion, Greece
J. A. Zensus
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany email: vkaramanavis@mpifr.de
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Abstract

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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.

Keywords

galaxies: activegalaxies: jetsgalaxies: Seyfertradio continuum: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S324: New Frontiers in Black Hole Astrophysics , September 2016 , pp. 184 - 187
Copyright
Copyright © International Astronomical Union 2017 

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