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Gamma-ray emitting narrow-line Seyfert 1 galaxies. New discoveries and open questions

Published online by Cambridge University Press:  25 July 2014

F. D'Ammando ,
M. Orienti ,
J. Finke ,
J. Larsson  and
M. Giroletti
F. D'Ammando*
Affiliation:
INAF - Istituto di Radioastronomia, Via Gobetti 101, I-40129 Bologna, Italy
M. Orienti
Affiliation:
INAF - Istituto di Radioastronomia, Via Gobetti 101, I-40129 Bologna, Italy
J. Finke
Affiliation:
U.S. Naval Research Laboratory, 4555 Overlook Ave. SW, Washington, DC 20375-5352, USA
J. Larsson
Affiliation:
KTH, Dep. of Physics, and the Oskar Klein Centre, AlbaNova, SE-106 91 Stockholm, Sweden
M. Giroletti
Affiliation:
INAF - Istituto di Radioastronomia, Via Gobetti 101, I-40129 Bologna, Italy
*
†[email protected]
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Abstract

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The discovery of γ-ray emission from 5 radio-loud narrow-line Seyfert 1 galaxies revealed the presence of a possible emerging third class of AGNs with relativistic jets, in addition to blazars and radio galaxies. The existence of relativistic jets also in this subclass of Seyfert galaxies opened an unexplored research space for our knowledge of the radio-loud AGNs. Here, we discuss the radio-to-γ-rays properties of the γ-ray emitting narrow-line Seyfert 1 galaxies, also in comparison with the blazar scenario.

Keywords

galaxies: activegalaxies: nucleigalaxies: Seyfertgamma-rays: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S304: Multiwavelength AGN Surveys and Studies , October 2013 , pp. 140 - 143
Copyright
Copyright © International Astronomical Union 2014 

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