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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
The structure and emission model of the relativistic jet in the quasar 3C279 inferred from radio to high-energy γ-ray observations in 2008-2010
Astrophysical Journal, Volume 754, No. 2, Article 114, Year 2012
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Description
We present time-resolved broadband observations of the quasar 3C279 obtained from multi-wavelength campaigns conducted during the first two years of the Fermi Gamma-ray Space Telescope mission. While investigating the previously reported γ-ray/optical flare accompanied by a change in optical polarization, we found that the optical emission appears to be delayed with respect to the γ-ray emission by about 10days. X-ray observations reveal a pair of "isolated" flares separated by 90 days, with only weak γ-ray/optical counterparts. The spectral structure measured by Spitzer reveals a synchrotron component peaking in the mid-infrared band with a sharp break at the far-infrared band during the γ-ray flare, while the peak appears in the millimeter (mm)/submillimeter (sub-mm) band in the low state. Selected spectral energy distributions are fitted with leptonic models including Comptonization of external radiation produced in a dusty torus or the broad-line region. Adopting the interpretation of the polarization swing involving propagation of the emitting region along a curved trajectory, we can explain the evolution of the broadband spectra during the γ-ray flaring event by a shift of its location from 1pc to 4pc from the central black hole. On the other hand, if the γ-ray flare is generated instead at sub-pc distance from the central black hole, the far-infrared break can be explained by synchrotron self-absorption. We also model the low spectral state, dominated by the mm/sub-mm peaking synchrotron component, and suggest that the corresponding inverse-Compton component explains the steady X-ray emission. © 2012. The American Astronomical Society. All rights reserved..
Authors & Co-Authors
Hayashida, Masaaki
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
Japan, Kyoto
Kyoto University
Madejski, Grzegorz M.
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
Nalewajko, Krzysztof
United States, Boulder
University of Colorado Boulder
Poland, Warsaw
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
Sikora, Marek
Poland, Warsaw
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
Wehrle, Ann E.
United States, Boulder
Space Science Institute
Ogle, Patrick Michael
Unknown Affiliation
Collmar, Werner
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Larsson, Stefan
Sweden, Stockholm
Stockholms Universitet
Sweden, Stockholm
Oskar Klein Centre
Fukazawa, Yasushi
Japan, Higashihiroshima
Hiroshima University
Itoh, Ryosuke
Japan, Higashihiroshima
Hiroshima University
Chiang, James
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
Stawarz, Łukasz
Japan, Chofu
Japan Aerospace Exploration Agency
Poland, Krakow
Uniwersytet Jagielloński
Blandford, Rogerd D.
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
Richards, Joseph L.
United States, Pasadena
California Institute of Technology
Max-Moerbeck, Walter
United States, Pasadena
California Institute of Technology
Readhead, Anthony C.S.
United States, Pasadena
California Institute of Technology
Buehler, Rolf
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
Cavazzuti, Elisabetta
Italy, Rome
Agenzia Spaziale Italiana
Ciprini, Stefano
Italy, Rome
Agenzia Spaziale Italiana
Italy, Perugia
Università Degli Studi Di Perugia
Gehrels, Neil C.
United States, Greenbelt
Nasa Goddard Space Flight Center
Reimer, Anita
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
Austria, Innsbruck
Universität Innsbruck
Tosti, Gino
Italy, Perugia
Università Degli Studi Di Perugia
Italy, Perugia
Istituto Nazionale Di Fisica Nucleare, Sezione Di Perugia
Uchiyama, Yasunobu
United States, Stanford
Kavli Institute for Particle Astrophysics and Cosmology
Kawabata, Koji S.
Japan, Higashihiroshima
Hiroshima University
Kino, Masaru
Japan, Nagoya
Nagoya University
Sasada, Mahito
Japan, Higashihiroshima
Hiroshima University
Sato, Shuji
Japan, Nagoya
Nagoya University
Uemura, Makoto
Japan, Higashihiroshima
Hiroshima University
Yamanaka, Masayuki
Japan, Higashihiroshima
Hiroshima University
Greiner, Jochen
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Rossi, Andrea
Germany, Camburg
Thüringer Landessternwarte Tautenburg
MacQuart, Jean Pierre R.
Australia, Perth
International Centre for Radio Astronomy Research
Bock, Douglas C.J.
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Villata, Massimo
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Raiteri, Claudia M.
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Agudo, Iván N.
Spain, Madrid
Consejo Superior de Investigaciones Científicas
United States, Boston
Boston University
Aller, Hugh D.
United States, Ann Arbor
University of Michigan, Ann Arbor
Aller, M. F.
United States, Ann Arbor
University of Michigan, Ann Arbor
Arkharov, Arkady A.H.
Russian Federation, Saint Petersburg
Pulkovo Observatory of the Russian Academy of Sciences
Bach, Uwe
Germany, Bonn
Max Planck Institute for Radio Astronomy
Benítez, E.
Mexico, Mexico
Universidad Nacional Autónoma de México
Berdyugin, Andrei V.
Finland, Turku
Turun Yliopisto
Blinov, Dmitry A.
Russian Federation, Saint Petersburg
Saint Petersburg State University
Boettcher, M.
United States, Athens
Ohio University
Buemi, Carla S.
Italy, Catania
Osservatorio Astrofisico Di Catania
Carosati, Daniele
Spain, La Palma
Ept Observatories
Spain, Brena Baja
Fundación Galileo Galilei
Chen, Wenping
Taiwan, Taoyuan
National Central University
Di Paola, Andrea
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Efimova, Natalia V.
Russian Federation, Saint Petersburg
Pulkovo Observatory of the Russian Academy of Sciences
Russian Federation, Saint Petersburg
Saint Petersburg State University
Forné, E.
Unknown Affiliation
Gómez, Jose L.
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Gurwell, Mark A.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Heidt, Jochen
Germany, Heidelberg
Universität Heidelberg
Hiriart, David
Mexico, Mexico
Universidad Nacional Autónoma de México
Jorstad, Svetlana G.
United States, Boston
Boston University
Russian Federation, Saint Petersburg
Saint Petersburg State University
Joshi, Manasvita
United States, Boston
Boston University
Kimeridze, Givi N.
Georgia, Abastumani
Abastumani Astrophysical Observatory
Grishina, Tatiana S.
Russian Federation, Saint Petersburg
Saint Petersburg State University
Kopatskaya, Evgenia N.
Russian Federation, Saint Petersburg
Saint Petersburg State University
Koptelova, Ekaterina A.
Taiwan, Taoyuan
National Central University
Taiwan, Taipei
National Taiwan University
Kurtanidze, Omar M.
Georgia, Abastumani
Abastumani Astrophysical Observatory
L¨ahteenm¨aki, Anne A.
Finland, Espoo
Aalto University
Lamerato, A.
United States, Athens
Ohio University
Larionov, Valeri M.
Russian Federation, Saint Petersburg
Pulkovo Observatory of the Russian Academy of Sciences
Russian Federation, Saint Petersburg
Saint Petersburg State University
Russian Federation, Saint Petersburg (ex Leningrad)
Isaac Newton Institute of Chile
Larionova, Elena G.
Russian Federation, Saint Petersburg
Saint Petersburg State University
Larionova, Liudmilla V.
Russian Federation, Saint Petersburg
Saint Petersburg State University
Leto, Paolo
Italy, Catania
Osservatorio Astrofisico Di Catania
Lindfors, Elina J.
Finland, Turku
Turun Yliopisto
Marscher, Alan P.
United States, Boston
Boston University
McHardy, Ian M.M.
United Kingdom, Southampton
University of Southampton
Molina, Sol N.
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Morozova, Daria A.
Russian Federation, Saint Petersburg
Saint Petersburg State University
Nikolashvili, M. G.
Georgia, Abastumani
Abastumani Astrophysical Observatory
Nilsson, Kari
Finland, Turku
Turun Yliopisto
Reinthal, Riho
Finland, Turku
Turun Yliopisto
Roustazadeh, Parisa
United States, Athens
Ohio University
Sakamoto, Takanori
United States, Greenbelt
Nasa Goddard Space Flight Center
Sigua, Lorand A.
Georgia, Abastumani
Abastumani Astrophysical Observatory
Sillanp̈äa, Aimo K.
Finland, Turku
Turun Yliopisto
Takalo, Leo O.
Finland, Turku
Turun Yliopisto
Tammi, Joni
Finland, Espoo
Aalto University
Taylor, Brian W.
United States, Boston
Boston University
United States, Flagstaff
Lowell Observatory
Tornikoski, Merja
Finland, Espoo
Aalto University
Trigilio, Corrado
Italy, Catania
Osservatorio Astrofisico Di Catania
Troitsky, Ivan S.
Russian Federation, Saint Petersburg
Saint Petersburg State University
Umana, Grazia
Italy, Catania
Osservatorio Astrofisico Di Catania
Statistics
Citations: 146
Authors: 86
Affiliations: 45
Identifiers
Doi:
10.1088/0004-637X/754/2/114
ISSN:
0004637X
Research Areas
Cancer
Environmental