The radio/gamma-ray connection in Active Galactic Nuclei in the era of the Fermi Large Area Telescope

Markus Ackermann; Marco Ajello; A. Allafort; E. Angelakis; Magnus Axelsson; Luca Baldini; Jean Ballet; Guido Barbiellini; D. Bastieri; R. Bellazzini; B. Berenji; R. D. Blandford; E. D. Bloom; E. Bonamente; A. W. Borgland; A. Bouvier; J. Bregeon; A. Brez; M. Brigida; Pascal Bruel; R. Buehler; S. Buson; G. A. Caliandro; R. A. Cameron; A. Cannon; P. A. Caraveo; J. M. Casandjian; E. Cavazzuti; C. Cecchi; E. Charles; A. Chekhtman; C. C. Cheung; S. Ciprini; R. Claus; J. Cohen-Tanugi; S. Cutini; F. de Palma; C. D. Dermer; E. Do Couto E Silva; P. S. Drell; R. Dubois; D. Dumora; L. Escande; C. Favuzzi; S. J. Fegan; W. B. Focke; P. Fortin; M. Frailis; L. Fuhrmann; Y. Fukazawa; P. Fusco; F. Gargano; D. Gasparrini; N. Gehrels; N. Giglietto; P. Giommi; F. Giordano; M. Giroletti; T. Glanzman; G. Godfrey; P. Grandi; I. A. Grenier; S. Guiriec; D. Hadasch; M. Hayashida; E. Hays; S. E. Healey; G. J.; A. S. Johnson; T. Kamae; H. Katagiri; J. Kataoka; J. Kn; M. Kuss; J. Lande; S.-H. Lee; F. Longo; F. Loparco; B. Lott; M. N. Lovellette; P. Lubrano; A. Makeev; W. Max-Moerbeck; M. N. Mazziotta; J. E. Mcenery; J. Mehault; P. F. Michelson; T. Mizuno; C. Monte; M. E. Monzani; A. Morselli; I. V. Moskalenko; S. Murgia; M. Naumann-Godo; S. Nishino; P. L. Nolan; J. P. Norris; E. Nuss; T. Ohsugi; A. Okumura; N. Omodei; E. Orlando; J. F. Ormes; M. Ozaki; D. Paneque; V. Pavlidou; V. Pelassa; M. Pepe; M. Pesce-Rollins; M. Pierbattista; F. Piron; T.A. Porter; S. Rain; M. Razzano; A. Readhead; A. Reimer; O. Reimer; J. L. Richards; R. W. Romani; H. F.-W. Sadrozinski; J. D. Scargle; C. Sgr; E. J. Siskind; P. D. Smith; G. Spandre; P. Spinelli; M. S. Strickman; D. J. Suson; H. Takahashi; T. Tanaka; G. B. Taylor; J. G. Thayer; J. B. Thayer; D. J. Thompson; D. F. Torres; G. Tosti; A. Tramacere; E. Troja; J. Vandenbroucke; G. Vianello; V. Vitale; A. P. Waite; P. Wang; B. L. Winer; K. S. Wood; Z. Yang; M. Ziegler

doi:10.1088/0004-637X/741/1/30

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The radio/gamma-ray connection in Active Galactic Nuclei in the era of the Fermi Large Area Telescope

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The radio/gamma-ray connection in Active Galactic Nuclei in the era of the Fermi Large Area Telescope

Markus Ackermann, Marco Ajello, A. Allafort, E. Angelakis, Magnus Axelsson, Luca Baldini, Jean Ballet, Guido Barbiellini, D. Bastieri, R. Bellazzini, …

The Astrophysical Journal, Vol.741

01/11/2011

DOI: https://doi.org/10.1088/0004-637X/741/1/30

Abstract

BL Lacertae objects: general

galaxies: active

galaxies: jets

gamma rays: galaxies

radio continuum: galaxies

quasars: general

We present a detailed statistical analysis of the correlation between radio and gamma-ray emission of the Active Galactic Nuclei (AGN) detected by Fermi during its first year of operation, with the largest datasets ever used for this purpose. We use both archival interferometric 8.4 GHz data (from the VLA and ATCA, for the full sample of 599 sources) and concurrent single-dish 15 GHz measurements from the Owens Valley Radio Observatory (OVRO, for a sub sample of 199 objects). Our unprecedentedly large sample permits us to assess with high accuracy the statistical significance of the correlation, using a surrogate-data method designed to simultaneously account for common-distance bias and the effect of a limited dynamical range in the observed quantities. We find that the statistical significance of a positive correlation between the cm radio and the broad band (E>100 MeV) gamma-ray energy flux is very high for the whole AGN sample, with a probability <1e-7 for the correlation appearing by chance. Using the OVRO data, we find that concurrent data improve the significance of the correlation from 1.6e-6 to 9.0e-8. Our large sample size allows us to study the dependence of correlation strength and significance on specific source types and gamma-ray energy band. We find that the correlation is very significant (chance probability <1e-7) for both FSRQs and BL Lacs separately; a dependence of the correlation strength on the considered gamma-ray energy band is also present, but additional data will be necessary to constrain its significance.

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Title: The radio/gamma-ray connection in Active Galactic Nuclei in the era of the Fermi Large Area Telescope
Creators - without role: Markus Ackermann - Kavli Institute for Particle Astrophysics and Cosmology
Marco Ajello - Stanford University
A. Allafort - Kavli Institute for Particle Astrophysics and Cosmology
E. Angelakis - Max Planck Institute for Radio Astronomy
Magnus Axelsson - Fraunhofer Chalmers Research Centre for Industrial Mathematics
Luca Baldini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Jean Ballet - Astrophysique, Instrumentation et Modélisation
Guido Barbiellini - University of Trieste
D. Bastieri - University of Padua
R. Bellazzini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
B. Berenji - Kavli Institute for Particle Astrophysics and Cosmology
R. D. Blandford
E. D. Bloom
E. Bonamente - University of Perugia
A. W. Borgland
A. Bouvier - University of California, Santa Cruz
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
S. Buson - University of Padua
G. A. Caliandro
R. A. Cameron
A. Cannon - Goddard Space Flight Center
P. A. Caraveo - Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
J. M. Casandjian - Astrophysique Interprétation Modélisation
E. Cavazzuti - Agenzia Spaziale Italiana
C. Cecchi - University of Perugia
E. Charles - Kavli Institute for Particle Astrophysics and Cosmology
A. Chekhtman - George Mason University
C. C. Cheung
S. Ciprini - University of Perugia
R. Claus - Kavli Institute for Particle Astrophysics and Cosmology
J. Cohen-Tanugi - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
S. Cutini - Agenzia Spaziale Italiana
F. de Palma - Polytechnic University of Bari
C. D. Dermer
E. Do Couto E Silva
P. S. Drell
R. Dubois - Kavli Institute for Particle Astrophysics and Cosmology
D. Dumora - Laboratoire de Physique des deux infinis Bordeaux
L. Escande - Laboratoire de Physique des deux infinis Bordeaux
C. Favuzzi - Polytechnic University of Bari
S. J. Fegan - Laboratoire Leprince-Ringuet
W. B. Focke
P. Fortin - Centre National de la Recherche Scientifique
M. Frailis - Trieste Astronomical Observatory
L. Fuhrmann - Max Planck Institute for Radio Astronomy
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
N. Giglietto - Istituto Nazionale di Fisica Nucleare, Sezione di 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 - Astrophysique Interprétation Modélisation
S. Guiriec - University of Alabama in Huntsville
D. Hadasch - Institute of Space Sciences
M. Hayashida - Stanford University
E. Hays - Goddard Space Flight Center
S. E. Healey
G. J.
A. S. Johnson
T. Kamae - SLAC National Accelerator Laboratory
H. Katagiri - Hiroshima University
J. Kataoka - Waseda University
J. Kn
M. Kuss - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
J. Lande - Kavli Institute for Particle Astrophysics and Cosmology
S.-H. Lee - Stanford University
F. Longo - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
F. Loparco - Polytechnic University of Bari
B. Lott - Centre National de la Recherche Scientifique
M. N. Lovellette
P. Lubrano - University of Perugia
A. Makeev - George Mason University
W. Max-Moerbeck - California Institute of Technology
M. N. Mazziotta
J. E. Mcenery
J. Mehault - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
P. F. Michelson
T. Mizuno - Hiroshima University
C. Monte - Polytechnic University of Bari
M. E. Monzani
A. Morselli - Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
I. V. Moskalenko
S. Murgia - SLAC National Accelerator Laboratory
M. Naumann-Godo - CEA Paris-Saclay
S. Nishino - Hiroshima University
P. L. Nolan
J. P. Norris
E. Nuss - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
T. Ohsugi - Hiroshima University
A. Okumura - Institute of Space and Astronautical Science
N. Omodei - Kavli Institute for Particle Astrophysics and Cosmology
E. Orlando - Kavli Institute for Particle Astrophysics and Cosmology
J. F. Ormes
M. Ozaki - Institute of Space and Astronautical Science
D. Paneque - Kavli Institute for Particle Astrophysics and Cosmology
V. Pavlidou - California Institute of Technology
V. Pelassa - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
M. Pepe - University of Perugia
M. Pesce-Rollins - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
M. Pierbattista - Astrophysique, Instrumentation et Modélisation
F. Piron - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
T.A. Porter - Kavli Institute for Particle Astrophysics and Cosmology
S. Rain
M. Razzano - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
A. Readhead
A. Reimer - Kavli Institute for Particle Astrophysics and Cosmology
O. Reimer - Kavli Institute for Particle Astrophysics and Cosmology
J. L. Richards
R. W. Romani
H. F.-W. Sadrozinski
J. D. Scargle
C. Sgr
E. J. Siskind
P. D. Smith
G. Spandre - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
P. Spinelli - Polytechnic University of Bari
M. S. Strickman
D. J. Suson
H. Takahashi - Hiroshima University
T. Tanaka - Kavli Institute for Particle Astrophysics and Cosmology
G. B. Taylor
J. G. Thayer
J. B. Thayer
D. J. Thompson
D. F. Torres
G. Tosti - Istituto Nazionale di Fisica Nucleare, Sezione di Perugia
A. Tramacere - Kavli Institute for Particle Astrophysics and Cosmology
E. Troja - Goddard Space Flight Center
J. Vandenbroucke - Kavli Institute for Particle Astrophysics and Cosmology
G. Vianello - Kavli Institute for Particle Astrophysics and Cosmology
V. Vitale - University of Rome Tor Vergata
A. P. Waite
P. Wang - Kavli Institute for Particle Astrophysics and Cosmology
B. L. Winer
K. S. Wood
Z. Yang - Fraunhofer Chalmers Research Centre for Industrial Mathematics
M. Ziegler - University of California, Santa Cruz
Publication Details: The Astrophysical Journal, Vol.741
Identifiers: 9939918409311
Academic Unit: Laboratoire Univers et Particules de Montpellier - LUPM
Language: English
Resource Type: Journal article
Local Fields: in2p3-00656610