Fermi Large Area Telescope Observations of Misaligned AGN

A. A. Abdo; M. Ackermann; M. Ajello; L. Baldini; Jean Ballet; G. Barbiellini; D. Bastieri; K. Bechtol; R. Bellazzini; B. Berenji; R. D. Blandford; E. D. Bloom; E. Bonamente; A. W. Borgland; A. Bouvier; T. J. Brandt; J. Bregeon; A. Brez; M. Brigida; Pascal Bruel; R. Buehler; T. H. Burnett; S. Buson; G. A. Caliandro; R. A. Cameron; A. Cannon; P. A. Caraveo; S. Carrigan; J. M. Casandjian; E. Cavazzuti; C. Cecchi; O. Celik; A. Celotti; E. Charles; A. Chekhtman; A. W. Chen; C. C. Cheung; J. Chiang; S. Ciprini; R. Claus; J. Cohen-Tanugi; S. Colafrancesco; J. Conrad; D. S. Davis; C. D. Dermer; A. de Angelis; F. de Palma; E. Do Couto e Silva; P. S. Drell; R. Dubois; C. Favuzzi; S. J. Fegan; E. C. Ferrara; P. Fortin; M. Frailis; Y. Fukazawa; P. Fusco; F. Gargano; D. Gasparrini; N. Gehrels; S. Germani; N. Giglietto; P. Giommi; F. Giordano; M. Giroletti; T. Glanzman; G. Godfrey; P. Grandi; I. A. Grenier; J. E. Grove; L. Guillemot; S. Guiriec; D. Hadasch; M. Hayashida; E. Hays; D. Horan; R. E. Hughes; M. S. Jackson; G. Johannesson; A. S. Johnson; W. N. Johnson; T. Kamae; H. Katagiri; J. Kataoka; Jürgen Knödlseder; M. Kuss; J. Lande; L. Latronico; S.-H. Lee; M. Lemoine-Goumard; M. Llena Garde; F. Longo; F. Loparco; B. Lott; M. N. Lovellette; P. Lubrano; G. M. Madejski; A. Makeev; G. Malaguti; M. N. Mazziotta; W. Mcconville; J. E. Mcenery; P. F. Michelson; G. Migliori; W. Mitthumsiri; T. Mizuno; C. Monte; M. E. Monzani; A. Morselli; I. V. Moskalenko; S. Murgia; M. Naumann-Godo; I. Nestoras; P. L. Nolan; J. P. Norris; E. Nuss; T. Ohsugi; A. Okumura; N. Omodei; E. Orlando; J. F. Ormes; D. Paneque; J. H. Panetta; D. Parent; V. Pelassa; M. Pepe; M. Persic; M. Pesce-Rollins; F. Piron; T. A. Porter; S. Raino; R. Rando; M. Razzano; S. Razzaque; A. Reimer; O. Reimer; L. C. Reyes; M. Roth; H. F.-W. Sadrozinski; D. Sanchez; A. Sander; J. D. Scargle; C. Sgro; E. J. Siskind; P. D. Smith; G. Spandre; P. Spinelli; Ł. Stawarz; F. W. Stecker; M. S. Strickman; D. J. Suson; H. Takahashi; T. Tanaka; J. B. Thayer; J. G. Thayer; D. J. Thompson; L. Tibaldo; D. F. Torres; E. Torresi; G. Tosti; A. Tramacere; Y. Uchiyama; T. L. Usher; J. Vandenbroucke; V. Vasileiou; N. Vilchez; M. Villata; V. Vitale; A. P. Waite; P. Wang; B. L. Winer; K. S. Wood; Z. Yang; T. Ylinen; M. Ziegler

doi:10.1088/0004-637X/720/1/912

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Fermi Large Area Telescope Observations of Misaligned AGN

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Fermi Large Area Telescope Observations of Misaligned AGN

A. A. Abdo, M. Ackermann, M. Ajello, L. Baldini, Jean Ballet, G. Barbiellini, D. Bastieri, K. Bechtol, R. Bellazzini, B. Berenji, …

The Astrophysical Journal, Vol.720, pp.912-922

01/09/2010

DOI: https://doi.org/10.1088/0004-637X/720/1/912

Abstract

galaxies: active

galaxies: jets

gamma rays: general

98.54.Cm Active and peculiar galaxies and related systems (including BL Lacertae objects, blazars, Seyfert galaxies, Markarian galaxies, and active galactic nuclei) 98.54.Aj Quasars 95.85.Pw &ggr;-ray 98.62.Nx Jets and bursts; galactic

Analysis is presented on 15 months of data taken with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope for 11 non-blazar AGNs, including 7 FRI radio galaxies and 4 FRII radio sources consisting of 2 FRII radio galaxies and 2 steep spectrum radio quasars. The broad line FRI radio galaxy 3C 120 is reported here as a gamma-ray source for the first time. The analysis is based on directional associations of LAT sources with radio sources in the 3CR, 3CRR and MS4 (collectively referred to as 3C-MS) catalogs. Seven of the eleven LAT sources associated with 3C-MS radio sources have spectral indices larger than 2.3 and, except for the FRI radio galaxy NGC 1275 that shows possible spectral curvature, are well described by a power law. No evidence for time variability is found for any sources other than NGC 1275. The gamma-ray luminosities of FRI radio galaxies are significantly smaller than those of BL Lac objects detected by the LAT, whereas the gamma-ray luminosities of FRII sources are quite similar to those of FSRQs, which could reflect different beaming factors for the gamma-ray emission. A core dominance study of the 3CRR sample indicate that sources closer to the jet axis are preferentially detected with the Fermi-LAT, insofar as the gamma-ray--detected misaligned AGNs have larger core dominance at a given average radio flux. The results are discussed in view of the AGN unification scenario.

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Title: Fermi Large Area Telescope Observations of Misaligned AGN
Creators - without role: A. A. Abdo - United States Naval Research Laboratory
M. Ackermann - Kavli Institute for Particle Astrophysics and Cosmology
M. Ajello - Kavli Institute for Particle Astrophysics and Cosmology
L. Baldini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Jean Ballet - Astrophysique, Instrumentation et Modélisation
G. Barbiellini - University of Trieste
D. Bastieri - University of Padua
K. Bechtol - Kavli Institute for Particle Astrophysics and Cosmology
R. Bellazzini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
B. Berenji - Kavli Institute for Particle Astrophysics and Cosmology
R. D. Blandford - Kavli Institute for Particle Astrophysics and Cosmology
E. D. Bloom - Kavli Institute for Particle Astrophysics and Cosmology
E. Bonamente - University of Perugia
A. W. Borgland - Stanford University
A. Bouvier - Kavli Institute for Particle Astrophysics and Cosmology
T. J. Brandt - Centre National de la Recherche Scientifique
J. Bregeon - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
A. Brez - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
M. Brigida - Polytechnic University of Bari
Pascal Bruel - École Polytechnique
R. Buehler - Kavli Institute for Particle Astrophysics and Cosmology
T. H. Burnett - University of Washington
S. Buson - University of Padua
G. A. Caliandro - Institute of Space Sciences
R. A. Cameron - Stanford University
A. Cannon - Goddard Space Flight Center
P. A. Caraveo - Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
S. Carrigan - University of Padua
J. M. Casandjian - Université Paris Cité
E. Cavazzuti - Agenzia Spaziale Italiana
C. Cecchi - University of Perugia
O. Celik - Goddard Space Flight Center
A. Celotti - Scuola Internazionale Superiore di Studi Avanzati
E. Charles - Kavli Institute for Particle Astrophysics and Cosmology
A. Chekhtman - United States Naval Research Laboratory
A. W. Chen - Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
C. C. Cheung - United States Naval Research Laboratory
J. Chiang - SLAC National Accelerator Laboratory
S. Ciprini - University of Perugia
R. Claus - Kavli Institute for Particle Astrophysics and Cosmology
J. Cohen-Tanugi - Laboratoire de Physique Théorique
S. Colafrancesco - Agenzia Spaziale Italiana
J. Conrad - Stockholm University
D. S. Davis - University of Maryland, Baltimore County
C. D. Dermer - United States Naval Research Laboratory
A. de Angelis - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
F. de Palma - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
E. Do Couto e Silva
P. S. Drell - Kavli Institute for Particle Astrophysics and Cosmology
R. Dubois - SLAC National Accelerator Laboratory
C. Favuzzi - Polytechnic University of Bari
S. J. Fegan - Laboratoire Leprince-Ringuet
E. C. Ferrara - Goddard Space Flight Center
P. Fortin - Centre National de la Recherche Scientifique
M. Frailis - Trieste Astronomical Observatory
Y. Fukazawa - Hiroshima University
P. Fusco - Polytechnic University of Bari
F. Gargano - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
D. Gasparrini - Agenzia Spaziale Italiana
N. Gehrels - Goddard Space Flight Center
S. Germani - University of Perugia
N. Giglietto - Polytechnic University of Bari
P. Giommi - Agenzia Spaziale Italiana
F. Giordano - Polytechnic University of Bari
M. Giroletti - Istituto di Radioastronomia di Bologna
T. Glanzman - Stanford University
G. Godfrey - Kavli Institute for Particle Astrophysics and Cosmology
P. Grandi - National Institute for Astrophysics
I. A. Grenier - CEA Paris-Saclay
J. E. Grove - United States Naval Research Laboratory
L. Guillemot - Laboratoire de Physique des deux infinis Bordeaux
S. Guiriec - University of Alabama in Huntsville
D. Hadasch - Institució Catalana de Recerca i Estudis Avançats
M. Hayashida - Kavli Institute for Particle Astrophysics and Cosmology
E. Hays - Goddard Space Flight Center
D. Horan - Laboratoire Leprince-Ringuet
R. E. Hughes - The Ohio State University
M. S. Jackson - AlbaNova
G. Johannesson - Kavli Institute for Particle Astrophysics and Cosmology
A. S. Johnson - Kavli Institute for Particle Astrophysics and Cosmology
W. N. Johnson - United States Naval Research Laboratory
T. Kamae - SLAC National Accelerator Laboratory
H. Katagiri - Hiroshima University
J. Kataoka - Waseda University
Jürgen Knödlseder - Centre National d'Études Spatiales
M. Kuss - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
J. Lande - Kavli Institute for Particle Astrophysics and Cosmology
L. Latronico - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
S.-H. Lee - Kavli Institute for Particle Astrophysics and Cosmology
M. Lemoine-Goumard - Institut National de Physique Nucléaire et de Physique des Particules
M. Llena Garde
F. Longo - University of Trieste
F. Loparco - Polytechnic University of Bari
B. Lott - Laboratoire de Physique des deux infinis Bordeaux
M. N. Lovellette - United States Naval Research Laboratory
P. Lubrano - University of Perugia
G. M. Madejski - Kavli Institute for Particle Astrophysics and Cosmology
A. Makeev - United States Naval Research Laboratory
G. Malaguti - National Institute for Astrophysics
M. N. Mazziotta - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
W. Mcconville - Goddard Space Flight Center
J. E. Mcenery - University of Maryland, College Park
P. F. Michelson - Kavli Institute for Particle Astrophysics and Cosmology
G. Migliori - Scuola Internazionale Superiore di Studi Avanzati
W. Mitthumsiri - Kavli Institute for Particle Astrophysics and Cosmology
T. Mizuno - Hiroshima University
C. Monte - Polytechnic University of Bari
M. E. Monzani - Kavli Institute for Particle Astrophysics and Cosmology
A. Morselli - Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
I. V. Moskalenko - Stanford University
S. Murgia - Kavli Institute for Particle Astrophysics and Cosmology
M. Naumann-Godo - CEA Paris-Saclay
I. Nestoras - Max Planck Institute for Radio Astronomy
P. L. Nolan - Kavli Institute for Particle Astrophysics and Cosmology
J. P. Norris - University of Denver
E. Nuss - Laboratoire de Physique Théorique
T. Ohsugi - Hiroshima University
A. Okumura - Institute of Space and Astronautical Science
N. Omodei - Kavli Institute for Particle Astrophysics and Cosmology
E. Orlando - Max Planck Institute for Extraterrestrial Physics
J. F. Ormes - University of Denver
D. Paneque - Kavli Institute for Particle Astrophysics and Cosmology
J. H. Panetta - Stanford University
D. Parent - George Mason University
V. Pelassa - Laboratoire de Physique Théorique
M. Pepe - University of Perugia
M. Persic - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
M. Pesce-Rollins - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
F. Piron - Laboratoire de Physique Théorique
T. A. Porter - Kavli Institute for Particle Astrophysics and Cosmology
S. Raino - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
R. Rando - University of Padua
M. Razzano - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
S. Razzaque - United States Naval Research Laboratory
A. Reimer - Kavli Institute for Particle Astrophysics and Cosmology
O. Reimer - Kavli Institute for Particle Astrophysics and Cosmology
L. C. Reyes - University of Chicago
M. Roth - University of Washington
H. F.-W. Sadrozinski - University of California, Santa Cruz
D. Sanchez - École Polytechnique
A. Sander - The Ohio State University
J. D. Scargle - Ames Research Center
C. Sgro - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
E. J. Siskind - Real Time Tomography
P. D. Smith - The Ohio State University
G. Spandre - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
P. Spinelli - Polytechnic University of Bari
Ł. Stawarz - Institute of Space and Astronautical Science
F. W. Stecker - Goddard Space Flight Center
M. S. Strickman - United States Naval Research Laboratory
D. J. Suson - Purdue University Northwest
H. Takahashi - Hiroshima University
T. Tanaka - Kavli Institute for Particle Astrophysics and Cosmology
J. B. Thayer - Stanford University
J. G. Thayer - Kavli Institute for Particle Astrophysics and Cosmology
D. J. Thompson - Goddard Space Flight Center
L. Tibaldo - Astrophysique Interprétation Modélisation
D. F. Torres - Institute of Space Sciences
E. Torresi - National Institute for Astrophysics
G. Tosti - Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
A. Tramacere - Consorzio Interuniversitario Fisica Spaziale
Y. Uchiyama - Kavli Institute for Particle Astrophysics and Cosmology
T. L. Usher - Kavli Institute for Particle Astrophysics and Cosmology
J. Vandenbroucke - Kavli Institute for Particle Astrophysics and Cosmology
V. Vasileiou - Goddard Space Flight Center
N. Vilchez - Université Toulouse III - Paul Sabatier
M. Villata - Osservatorio Astrofisico di Torino
V. Vitale - Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
A. P. Waite - Kavli Institute for Particle Astrophysics and Cosmology
P. Wang - Kavli Institute for Particle Astrophysics and Cosmology
B. L. Winer - The Ohio State University
K. S. Wood - United States Naval Research Laboratory
Z. Yang - AlbaNova
T. Ylinen - Fraunhofer Chalmers Research Centre for Industrial Mathematics
M. Ziegler - University of California, Santa Cruz
Publication Details: The Astrophysical Journal, Vol.720, pp.912-922
Identifiers: 9938336409311
Academic Unit: Université de Montpellier
Language: English
Resource Type: Journal article
Local Fields: in2p3-00530049