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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Fermi Large Area Telescope observations of misaligned active galactic nuclei
Astrophysical Journal, Volume 720, No. 1, Year 2010
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Description
Analysis is presented for 15 months of data taken with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope for 11 non-blazar active galactic nuclei (AGNs), including seven FRI radio galaxies and four FRII radio sources consisting of two FRII radio galaxies and two steep spectrum radio quasars. The broad line FRI radio galaxy 3C 120 is reported here as a γ -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 γ-ray luminosities of FRI radio galaxies are significantly smaller than those of the BL Lac objects detected by the LAT, whereas the γ -ray luminosities of the FRII sources are quite similar to those of FSRQs, which could reflect different beaming factors for the γ -ray emission. A core dominance (CD) study of the 3CRR sample indicates that sources closer to the jet axis are preferentially detected with the Fe r m i LAT, insofar as the γ -ray-detected misaligned AGNs have larger CD at a given average radio flux. The results are discussed in view of the AGN unification scenario. © 2010. The American Astronomical Society. All rights reserved. Printed in the U.S.A.
Authors & Co-Authors
Abdo, Aous A.
United States, Washington, D.c.
U.s. Naval Research Laboratory
United States, Washington, D.c.
National Academy of Sciences
Ackermann, Markus
United States, Palo Alto
Stanford University
Ajello, Marco
United States, Palo Alto
Stanford University
Baldini, Luca
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Ballet, Jean
France, Gif-sur-yvette
Astrophysique, Instrumentation et Modélisation de Paris-saclay
Barbiellini, Guido
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Italy, Trieste
Università Degli Studi Di Trieste
Bastieri, D.
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Italy, Padua
Università Degli Studi Di Padova
Bechtol, Keith C.
United States, Palo Alto
Stanford University
Bellazzini, Ronaldo
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Berenji, B.
United States, Palo Alto
Stanford University
Blandford, Rogerd D.
United States, Palo Alto
Stanford University
Bloom, Elliott D.
United States, Palo Alto
Stanford University
Bonamente, Emanuele
Italy, Perugia
Istituto Nazionale Di Fisica Nucleare, Sezione Di Perugia
Italy, Perugia
Università Degli Studi Di Perugia
Borgland, Anders W.
United States, Palo Alto
Stanford University
Bouvier, Aurelien
United States, Palo Alto
Stanford University
Brandt, Theresa J.
France, Toulouse
Université Toulouse Iii - Paul Sabatier
United States, Columbus
The Ohio State University
Bregeon, Johan
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Brigida, Monica
Italy, Bari
Politecnico Di Bari
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
Bruel, Philippe V.
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Buehler, Rolf
United States, Palo Alto
Stanford University
Burnett, Thompson H.
United States, Seattle
University of Washington
Buson, Sara
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Italy, Padua
Università Degli Studi Di Padova
Caliandro, Giuseppe Andrea
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Cameron, Robert A.
United States, Palo Alto
Stanford University
Cannon, Anna
United States, Greenbelt
Nasa Goddard Space Flight Center
Ireland, Dublin
University College Dublin
Caraveo, Patrizia A.
Italy, Milan
Inaf Istituto Di Astrofisica Spaziale e Fisica Cosmica, Milan
Carrigan, Svenja
Italy, Padua
Università Degli Studi Di Padova
Casandjian, Jean Marc
France, Gif-sur-yvette
Astrophysique, Instrumentation et Modélisation de Paris-saclay
Cavazzuti, Elisabetta
Italy, Rome
Agenzia Spaziale Italiana
Cecchi, Claudia
Italy, Perugia
Istituto Nazionale Di Fisica Nucleare, Sezione Di Perugia
Italy, Perugia
Università Degli Studi Di Perugia
Çelik, Ö. Ö.
United States, Greenbelt
Nasa Goddard Space Flight Center
United States, Baltimore
University of Maryland, Baltimore County Umbc
Celotti, Annalisa
Italy, Trieste
Scuola Internazionale Superiore Di Studi Avanzati
Charles, Eric
United States, Palo Alto
Stanford University
Chekhtman, Alexandre
United States, Washington, D.c.
U.s. Naval Research Laboratory
United States, Fairfax
George Mason University
Chen, Andrew W.
Italy, Milan
Inaf Istituto Di Astrofisica Spaziale e Fisica Cosmica, Milan
Cheung, Chi C.Teddy
United States, Washington, D.c.
U.s. Naval Research Laboratory
United States, Washington, D.c.
National Academy of Sciences
Chiang, James
United States, Palo Alto
Stanford University
Ciprini, Stefano
Italy, Perugia
Università Degli Studi Di Perugia
Claus, Richard
United States, Palo Alto
Stanford University
Cohen-Tanugi, Johann
France, Montpellier
Université de Montpellier
Colafrancesco, Sergio
Italy, Rome
Agenzia Spaziale Italiana
Conrad, Jan
Sweden, Stockholm
Stockholms Universitet
Sweden, Stockholm
Oskar Klein Centre
Dermer, Charles Dennison
United States, Washington, D.c.
U.s. Naval Research Laboratory
De Angelis, Alessandro D.
Italy, Rome
Istituto Nazionale Di Fisica Nucleare - Infn
de Palma, Francesco
Italy, Bari
Politecnico Di Bari
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
do Couto E Silva, Eduardo
United States, Palo Alto
Stanford University
Drell, Persis S.
United States, Palo Alto
Stanford University
Dubois, Richard
United States, Palo Alto
Stanford University
Favuzzi, Cecilia
Italy, Bari
Politecnico Di Bari
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
Fegan, Stephen J.
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Ferrara, Elizabeth C.
United States, Greenbelt
Nasa Goddard Space Flight Center
Fortin, Pascal
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Frailis, Marco
Italy, Rome
Istituto Nazionale Di Fisica Nucleare - Infn
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Fukazawa, Yasushi
Japan, Higashihiroshima
Hiroshima University
Fusco, Piergiorgio G.
Italy, Bari
Politecnico Di Bari
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
Gargano, Fabio
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
Gasparrini, Dario
Italy, Rome
Agenzia Spaziale Italiana
Gehrels, Neil C.
United States, Greenbelt
Nasa Goddard Space Flight Center
Germani, Stefano
Italy, Perugia
Istituto Nazionale Di Fisica Nucleare, Sezione Di Perugia
Italy, Perugia
Università Degli Studi Di Perugia
Giglietto, Nicola
Italy, Bari
Politecnico Di Bari
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
Giommi, Paolo
Italy, Rome
Agenzia Spaziale Italiana
Giordano, Francesco
Italy, Bari
Politecnico Di Bari
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
Giroletti, Marcello
Italy, Bologna
Istituto Di Radioastronomia, Bologna
Glanzman, Thomas
United States, Palo Alto
Stanford University
Godfrey, Gary L.
United States, Palo Alto
Stanford University
Grandi, Paola
Italy, Bologna
Inaf Istituto Di Astrofisica Spaziale e Fisica Cosmica, Bologna
Grenier, Isabelle A.
France, Gif-sur-yvette
Astrophysique, Instrumentation et Modélisation de Paris-saclay
Grove, J. Eric
United States, Washington, D.c.
U.s. Naval Research Laboratory
Guillemot, Lucas
Germany, Bonn
Max Planck Institute for Radio Astronomy
France, Gradignan
Lp2i - Laboratoire de Physique Des Deux Infinis Bordeaux
Guiriec, Sylvain
United States, Huntsville
The University of Alabama in Huntsville
Hadasch, Daniela
Spain, Barcelona
Institució Catalana de Recerca I Estudis Avançats
Hayashida, Masaaki
United States, Palo Alto
Stanford University
Hays, Elizabeth A.
United States, Greenbelt
Nasa Goddard Space Flight Center
Horan, Deirdre
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Hughes, Richard E.
United States, Columbus
The Ohio State University
Jóhannesson, Gudlaugur
United States, Palo Alto
Stanford University
Johnson, Anthony S.
United States, Palo Alto
Stanford University
Johnson, William Neil
United States, Washington, D.c.
U.s. Naval Research Laboratory
Kamae, Tsuneyoshi
United States, Palo Alto
Stanford University
Katagiri, Hideaki
Japan, Higashihiroshima
Hiroshima University
Kataoka, Jun
Japan, Tokyo
Waseda University
Kn̈odlseder, Jürgen
France, Toulouse
Université Toulouse Iii - Paul Sabatier
Kuss, Michael W.
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Lande, Joshua
United States, Palo Alto
Stanford University
Latronico, Luca
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Lemoine-Goumard, Marianne
France, Gradignan
Lp2i - Laboratoire de Physique Des Deux Infinis Bordeaux
Llena-Garde, Maja
Sweden, Stockholm
Stockholms Universitet
Sweden, Stockholm
Oskar Klein Centre
Longo, Francesco
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Italy, Trieste
Università Degli Studi Di Trieste
Loparco, Francesco
Italy, Bari
Politecnico Di Bari
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
Lott, Benoît
France, Gradignan
Lp2i - Laboratoire de Physique Des Deux Infinis Bordeaux
Lovellette, Michael N.
United States, Washington, D.c.
U.s. Naval Research Laboratory
Lubrano, Pasquale
Italy, Perugia
Istituto Nazionale Di Fisica Nucleare, Sezione Di Perugia
Italy, Perugia
Università Degli Studi Di Perugia
Madejski, Grzegorz M.
United States, Palo Alto
Stanford University
Mazziotta, Mario Nicola
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
McConville, William F.
United States, Greenbelt
Nasa Goddard Space Flight Center
United States, College Park
University of Maryland, College Park
McEnery, Julie E.
United States, Greenbelt
Nasa Goddard Space Flight Center
United States, College Park
University of Maryland, College Park
Michelson, Peter F.
United States, Palo Alto
Stanford University
Migliori, Giulia
Italy, Trieste
Scuola Internazionale Superiore Di Studi Avanzati
Mitthumsiri, Warit
United States, Palo Alto
Stanford University
Mizuno, Tsunefumi
Japan, Higashihiroshima
Hiroshima University
Monzani, Maria Elena
United States, Palo Alto
Stanford University
Morselli, Aldo
Italy, Rome
Università Degli Studi Di Roma Tor Vergata
Moskalenko, Igor V.
United States, Palo Alto
Stanford University
Murgia, Simona
United States, Palo Alto
Stanford University
Naumann-Godó, Melitta
France, Gif-sur-yvette
Astrophysique, Instrumentation et Modélisation de Paris-saclay
Nestoras, Ioannis
Germany, Bonn
Max Planck Institute for Radio Astronomy
Nolan, Patrick L.
United States, Palo Alto
Stanford University
Nuss, Eric
France, Montpellier
Université de Montpellier
Ohsugi, Takashi
Japan, Higashihiroshima
Hiroshima University
Omodei, Nicola
United States, Palo Alto
Stanford University
Orlando, E.
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Ormes, Jonathan F.
United States, Denver
University of Denver
Paneque, David
United States, Palo Alto
Stanford University
Parent, Damien
United States, Washington, D.c.
U.s. Naval Research Laboratory
United States, Fairfax
George Mason University
Pelassa, Vèronique
France, Montpellier
Université de Montpellier
Persic, Massimo
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Pesce-Rollins, Melissa
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Piron, Frédéric
France, Montpellier
Université de Montpellier
Porter, Troy A.
United States, Palo Alto
Stanford University
Rainó, Silvia
Italy, Bari
Politecnico Di Bari
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
Rando, Riccardo
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Italy, Padua
Università Degli Studi Di Padova
Razzano, Massimiliano
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Razzaque, Soebur
United States, Washington, D.c.
U.s. Naval Research Laboratory
United States, Washington, D.c.
National Academy of Sciences
Reimer, Anita
United States, Palo Alto
Stanford University
Austria, Innsbruck
Universität Innsbruck
Reimer, Olaf
United States, Palo Alto
Stanford University
Austria, Innsbruck
Universität Innsbruck
Reyes, Luis C.
United States, Chicago
The University of Chicago
Sadrozinski, Hartmut F.W.
United States, Santa Cruz
University of California, Santa Cruz
Sánchez, David A.
France, Paris
In2p3 - Institut National de Physique Nucléaire et de Physique Des Particules
Scargle, Jefferey D.
United States, Moffett Field
Nasa Ames Research Center
Sgro', Carmelo
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Siskind, Eric J.
United States, Rocky Point
Nycb Realtime Computing Inc.
Spandre, G.
Italy, Pisa
Istituto Nazionale Di Fisica Nucleare, Sezione Di Pisa
Spinelli, Paolo
Italy, Bari
Politecnico Di Bari
Italy, Bari
Istituto Nazionale Di Fisica Nucleare, Sezione Di Bari
Stawarz, Łukasz
Japan, Chofu
Japan Aerospace Exploration Agency
Poland, Krakow
Uniwersytet Jagielloński
Stecker, Floyd William
United States, Greenbelt
Nasa Goddard Space Flight Center
Strickman, Mark S.
United States, Washington, D.c.
U.s. Naval Research Laboratory
Suson, Daniel J.
United States, Westville
Purdue University Northwest
Takahashi, Hiromitsu
Japan, Higashihiroshima
Hiroshima University
Thayer, Jana B.
United States, Palo Alto
Stanford University
Thompson, David J.
United States, Greenbelt
Nasa Goddard Space Flight Center
Tibaldo, Luigi
France, Gif-sur-yvette
Astrophysique, Instrumentation et Modélisation de Paris-saclay
Italy, Padua
Istituto Nazionale Di Fisica Nucleare, Sezione Di Padova
Italy, Padua
Università Degli Studi Di Padova
Torres, Diego F.
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Spain, Barcelona
Institució Catalana de Recerca I Estudis Avançats
Tosti, Gino
Italy, Perugia
Istituto Nazionale Di Fisica Nucleare, Sezione Di Perugia
Italy, Perugia
Università Degli Studi Di Perugia
Tramacere, Andrea
United States, Palo Alto
Stanford University
Switzerland, Geneva
Université de Genève
Uchiyama, Yasunobu
United States, Palo Alto
Stanford University
Usher, Tracy L.
United States, Palo Alto
Stanford University
Vandenbroucke, Justin A.
United States, Palo Alto
Stanford University
Vilchez, Nicolas P.E.
France, Toulouse
Université Toulouse Iii - Paul Sabatier
Villata, Massimo
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Vitale, V.
Italy, Rome
Università Degli Studi Di Roma Tor Vergata
Waite, A. P.
United States, Palo Alto
Stanford University
Wood, Kent S.
United States, Washington, D.c.
U.s. Naval Research Laboratory
Statistics
Citations: 160
Authors: 152
Affiliations: 53
Identifiers
Doi:
10.1088/0004-637X/720/1/912
ISSN:
0004637X
Research Areas
Environmental