A Panchromatic View of Relativistic Jets in Narrow-Line Seyfert 1 Galaxies

A Panchromatic View of Relativistic Jets in Narrow-Line Seyfert 1 Galaxies

The discovery by the Large Area Telescope on board Fermi of variable γ-ray emission from radio-loud narrow-line Seyfert 1 (NLSy1) galaxies revealed the presence of a possible third class of Active Galactic Nuclei (AGN) with relativistic jets in addition to blazars and radio galaxies. Considering tha...

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Main Authors: Filippo D’Ammando, Monica Orienti, Justin Finke, Josefin Larsson, Marcello Giroletti, Claudia M. Raiteri
Format: Article
Language:English
Published: MDPI AG 2016-08-01
Series:Galaxies
Subjects:
galaxies: nuclei
galaxies: jets
galaxies: Seyfert
gamma-rays: general
Online Access:http://www.mdpi.com/2075-4434/4/3/11
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spelling doaj-ff37a8fb0f4f4d1c9758533aa401fb5f2020-11-24T21:20:06ZengMDPI AGGalaxies2075-44342016-08-01431110.3390/galaxies4030011galaxies4030011A Panchromatic View of Relativistic Jets in Narrow-Line Seyfert 1 GalaxiesFilippo D’Ammando0Monica Orienti1Justin Finke2Josefin Larsson3Marcello Giroletti4Claudia M. Raiteri5Dipartimento di Fisica e Astronomia, Universitá degli Studi di Bologna, Viale Berti Pichat 6/2, Bologna 40127, ItalyINAF - Istituto di Radioastronomia, Via Gobetti 101, Bologna 40129, ItalyU.S. Naval Research Laboratory, Code 7653, 4555 Overlook Ave. SW, Washington, DC 20375-5352, USAKTH, Department of Physics, and the Oskar Klein Centre, AlbaNova, SE-106 91 Stockholm, SwedenINAF - Istituto di Radioastronomia, Via Gobetti 101, Bologna 40129, ItalyINAF - Osservatorio Astrofisico di Torino, Via Osservatorio 20, I-10025 Pino Torinese (TO), ItalyThe discovery by the Large Area Telescope on board Fermi of variable γ-ray emission from radio-loud narrow-line Seyfert 1 (NLSy1) galaxies revealed the presence of a possible third class of Active Galactic Nuclei (AGN) with relativistic jets in addition to blazars and radio galaxies. Considering that NLSy1 are usually hosted in spiral galaxies, this finding poses intriguing questions about the nature of these objects and the formation of relativistic jets. We report on a systematic investigation of the γ-ray properties of a sample of radio-loud NLSy1, including the detection of new objects, using 7 years of Fermi-LAT data with the new Pass 8 event-level analysis. In addition we discuss the radio-to-very-high-energy properties of the γ-ray emitting NLSy1, their host galaxy, and black hole mass in the context of the blazar scenario and the unification of relativistic jets at different scales.http://www.mdpi.com/2075-4434/4/3/11galaxies: nucleigalaxies: jetsgalaxies: Seyfertgamma-rays: general
collection DOAJ
language English
format Article
sources DOAJ
author Filippo D’Ammando
Monica Orienti
Justin Finke
Josefin Larsson
Marcello Giroletti
Claudia M. Raiteri
spellingShingle Filippo D’Ammando
Monica Orienti
Justin Finke
Josefin Larsson
Marcello Giroletti
Claudia M. Raiteri
A Panchromatic View of Relativistic Jets in Narrow-Line Seyfert 1 Galaxies
Galaxies
galaxies: nuclei
galaxies: jets
galaxies: Seyfert
gamma-rays: general
author_facet Filippo D’Ammando
Monica Orienti
Justin Finke
Josefin Larsson
Marcello Giroletti
Claudia M. Raiteri
author_sort Filippo D’Ammando
title A Panchromatic View of Relativistic Jets in Narrow-Line Seyfert 1 Galaxies
title_short A Panchromatic View of Relativistic Jets in Narrow-Line Seyfert 1 Galaxies
title_full A Panchromatic View of Relativistic Jets in Narrow-Line Seyfert 1 Galaxies
title_fullStr A Panchromatic View of Relativistic Jets in Narrow-Line Seyfert 1 Galaxies
title_full_unstemmed A Panchromatic View of Relativistic Jets in Narrow-Line Seyfert 1 Galaxies
title_sort panchromatic view of relativistic jets in narrow-line seyfert 1 galaxies
publisher MDPI AG
series Galaxies
issn 2075-4434
publishDate 2016-08-01
description The discovery by the Large Area Telescope on board Fermi of variable γ-ray emission from radio-loud narrow-line Seyfert 1 (NLSy1) galaxies revealed the presence of a possible third class of Active Galactic Nuclei (AGN) with relativistic jets in addition to blazars and radio galaxies. Considering that NLSy1 are usually hosted in spiral galaxies, this finding poses intriguing questions about the nature of these objects and the formation of relativistic jets. We report on a systematic investigation of the γ-ray properties of a sample of radio-loud NLSy1, including the detection of new objects, using 7 years of Fermi-LAT data with the new Pass 8 event-level analysis. In addition we discuss the radio-to-very-high-energy properties of the γ-ray emitting NLSy1, their host galaxy, and black hole mass in the context of the blazar scenario and the unification of relativistic jets at different scales.
topic galaxies: nuclei
galaxies: jets
galaxies: Seyfert
gamma-rays: general
url http://www.mdpi.com/2075-4434/4/3/11
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