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A change in the optical polarization associated with a γ-ray flare in the blazar 3C 279

Abdo, A. A. and Ackermann, M. and Ajello, M. and Axelsson, M. and Baldini, L. and Ballet, J. and Barbiellini, G. and Bastieri, D. and Baughman, B. M. and Bechtol, K. and Bellazzini, R. and Berenji, B. and Blandford, R. D. and Bloom, E. D. and Bock, D. C.-J. and Bogart, J. R. and Bonamente, E. and Borgland, A. W. and Bouvier, A. and Bregeon, J. and Brez, A. and Brigida, M. and Bruel, P. and Burnett, T. H. and Buson, S. and Caliandro, G. A. and Cameron, R. A. and Caraveo, P. A. and Casandjian, J. M. and Cavazzuti, E. and Cecchi, C. and Celik, Ö. and Chekhtman, A. and Cheung, C. C. and Chiang, J. and Ciprini, S. and Claus, R. and Cohen-Tanugi, J. and Collmar, W. and Cominsky, L. R. and Conrad, J and Corbel, S. and Corbet, R. and Costamante, L. and Cutini, S. and Dermer, C. D. and De-Angelis, A. and De-Palma, F. and Digel, S. W. and Do-Couto-E-Silva, E. and Drell, P. S. and Dubois, R. and Dumora, D. and Farnier, C. and Favuzzi, C. and Fegan, S. J. and Ferrara, E. C. and Focke, W. B. and Fortin, P. and Frailis, M. and Fuhrmann, L. and Fukazawa, Y. and Funk, S. and Fusco, P. and Gargano, F. and Gasparrini, D. and Gehrels, N. and Germani, S. and Giebels, B. and Giglietto, N. and Giommi, P. and Giordano, F. and Giroletti, M. and Glanzman, T. and Godfrey, G. and Grenier, I. A. and Grove, J. E. and Guillemot, L. and Guiriec, S. and Hanabata, Y. and Harding, A. K. and Hayashida, M. and Hays, E. and Horan, D. and Hughes, R. E. and Iafrate, G. and Itoh, R. and Jackson, M. S. and Jόhannesson, G. and Johnson, A. S. and Johnson, W. N. and Kadler, M. and Kamae, T. and Katagiri, H and Kataoka, J. and Kawai, N. and Kerr, M. and Knödlseder, J. and Kocian, M. L. and Kuss, M. and Lande, J. and Larsson, S. and Latronico, L. and Lemoine-Goumard, M. and Longo, F. and Loparco, F. and Lott, B. and Lovellette, M. N. and Lubrano, P. and Macquart, J. and Madejski, G. M. and Makeev, A. and Max-Moerbeck, W. and Mazziotta, M. N. and McConville, W. and McEnery, J. E. and McGlynn, S. and Meurer, C. and Michelson, P. F. and Mitthumsiri, W. and Mizuno, T. and Moiseev, A. A. and Monte, C. and Monzani, M. E. and Morselli, A. and Moskalenko, I. V. and Murgia, S. and Nestoras, I. and Nolan, P. L. and Norris, J. P. and Nuss, E. and Ohsugi, T. and Okumura, A. and Omodei, N. and Orlando, E. and Ormes, J. F. and Paneque, D. and Panetta, J. H. and Parent, D. and Pavlidou, V. and Pearson, T. J. and Pelassa, V. and Pepe, M. and Pesce-Rollins, M. and Piron, F. and Porter, T. A. and Rainò, S. and Rando, R. and Razzano, M. and Readhead, A. and Reimer, A. and Reimer, O. and Reposeur, T. and Reyes, L. C. and Richards, J. L. and Rochester, L. S. and Rodriguez, A. Y. and Roth, M. and Ryde, F. and Sadrozinski, H. F.-W. and Sanchez, D. and Sander, A. and Saz-Parkinson, P. M. and Scargle, J. D. and Sgrò, C. and Shaw, M. S. and Shrader, C. and Siskind, E. J. and Smith, D. A. and Smith, P. D. and Spandre, G. and Spinelli, P. and Stawarz, L. and Stevenson, M. and Strickman, M. S. and Suson, D. J. and Tajima, H. and Takahashi, H. and Takahashi, T. and Tanaka, T. and Taylor, G. B. and Thayer, J. B. and Thayer, J. G. and Thompson, D. J. and Tibaldo, L. and Torres, D. F. and Tosti, G. and Tramacere, A. and Uchiyama, Y. and Usher, T. L. and Vasileiou, V. and Vilchez, N. and Vitale, V. and Waite, A. P. and Wang, P. and Wehrle, A. E. and Winer, B. L. and Wood, K. S. and Ylinen, T. and Zensus, J. A. and Ziegler, M. and Uemura, M. and Ikejiri, Y. and Kawabata, K. S. and Kino, M. and Sakimoto, K. and Sasada, M. and Sato, S. and Yamanaka, M. and Villata, M. and Raiteri, C. M. and Agudo, I. and Aller, H. D. and Aller, M. F. and Angelakis, E. and Arkharov, A. A. and Bach, U. and Benítez, E. and Berdyugin, A. and Blinov, D. A. and Boettcher, M. and Buemi, C. S. and Chen, W. P. and Dolci, M. and Dultzin, D. and Efimova, N. V. and Gurwell, M. A. and Gusbar, C. and Gόmez, J. L. and Heidt, J. and Hiriart, D. and Hovatta, T. and Jorstad, S. G. and Konstantinova, T. S. and Kopatskaya, E. N. and Koptelova, E. and Kurtanidze, O. M. and Lähteenmäki, A. and Larionov, V. M. and Larionova, E. G. and Leto, P. and Lin, H. C. and Lindfors, E. and Marscher, A. P. and McHardy, I. M. and Melnichuk, D. A. and Mommert, M. and Nilsson, K. and Di-Paola, A. and Reinthal, R. and Ritchter, G. M. and Roca-Sogorb, M. and Roustazadeh, P. and Sigua, L. A. and Takalo, L. O. and Tornikoski, M. and Trigilio, C. and Troitsky, I. S. and Umana, G. and Villforth, C. and Grainge, K. and Moderski, R. and Nalewajko, K. and Sikora, M. (2010) A change in the optical polarization associated with a γ-ray flare in the blazar 3C 279. Nature, 463 (7283). pp. 849-990. ISSN 0028-0836.

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It is widely accepted that strong and variable radiation detected over all accessible energy bands in a number of active galaxies arises from a relativistic, Doppler-boosted jet pointing close to our line of sight^1. The size of the emitting zone and the location of this region relative to the central supermassive black hole are, however, poorly known, with estimates ranging from light-hours to a light-year or more. Here we report the coincidence of a gamma (γ)-ray flare with a dramatic change of optical polarization angle. This provides evidence for co-spatiality of optical and γ-ray emission regions and indicates a highly ordered jet magnetic field. The results also require a non-axisymmetric structure of the emission zone, implying a curved trajectory for the emitting material within the jet, with the dissipation region located at a considerable distance from the black hole, at about 105 gravitational radii.

Item Type:Article
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URLURL TypeDescription ReadCube access
Ajello, M.0000-0002-6584-1703
Blandford, R. D.0000-0002-1854-5506
Harding, A. K.0000-0001-6119-859X
Macquart, J.0000-0001-6763-8234
Max-Moerbeck, W.0000-0002-5491-5244
Pearson, T. J.0000-0001-5213-6231
Readhead, A.0000-0001-9152-961X
Taylor, G. B.0000-0001-6495-7731
Torres, D. F.0000-0002-1522-9065
Wood, K. S.0000-0002-7376-3151
Aller, M. F.0000-0003-2483-2103
Angelakis, E.0000-0001-7327-5441
Gurwell, M. A.0000-0003-0685-3621
Hovatta, T.0000-0002-2024-8199
Mommert, M.0000-0002-8132-778X
Nilsson, K.0000-0002-1445-8683
Tornikoski, M.0000-0003-1249-6026
Trigilio, C.0000-0002-1216-7831
Additional Information:© 2010 Macmillan Publishers Limited. All rights reserved. Received 6 October 2009; accepted 14 January 2010. The Fermi-LAT Collaboration acknowledges support from a number of agencies and institutes for both development and the operation of the LAT as well as scientific data analysis. These include NASA and DOE in the United States, CEA/Irfu and IN2P3/CNRS in France, ASI and INFN in Italy, MEXT, KEK and JAXA in Japan, and the K. A. Wallenberg Foundation, the Swedish Research Council and the National Space Board in Sweden. Additional support from INAF in Italy for science analysis during the operations phase is also gratefully acknowledged. The GASP-WEBT observatories participating in this work are Abastumani, Calar Alto, Campo Imperatore, Crimean, Kitt Peak (MDM), L’Ampolla, Lowell (Perkins-PRISM), Lulin, Roque de los Muchachos (KVA and Liverpool), San Pedro Mártir, St Petersburg for the optical–NIR bands, and Mauna Kea (SMA), Medicina, Metsahovi, Noto and UMRAO for the millimetre radio band, and are supported in part by the Georgian National Science Foundation, the Spanish "Ministerio de Ciencia e Innovaciόn", the NSF and NASA and the Smithsonian Institution in the United States, the UK Science and Technology Facilities Council, the Academia Sinica in Taiwan, the Russian RFBR and the Academy of Finland. M.H. is supported by the JSPS for the Postdoctoral Fellowship for Research Abroad. J. Conrad is a Royal Swedish Academy of Sciences Research Fellow, funded by a grant from the K. A. Wallenberg Foundation. L.T. is partially supported by the International Doctorate on Astroparticle Physics (IDAPP) programme
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
Commissariat à l’Energie Atomique (CEA)UNSPECIFIED
Institut National de Physique Nucléaire et Physique des Particules (IN2P3)UNSPECIFIED
Agenzia Spaziale Italiana (ASI)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
Ministry of Education, Culture, Sports, Science and Technology (MEXT)UNSPECIFIED
High Energy Accelerator Research Organization (KEK)UNSPECIFIED
Japan Aerospace Exploration Agency (JAXA)UNSPECIFIED
K. A. Wallenberg FoundationUNSPECIFIED
Swedish Research CouncilUNSPECIFIED
Swedish National Space Board (SNSB)UNSPECIFIED
Istituto Nazionale di Astrofisica (INAF)UNSPECIFIED
Georgian National Science FoundationUNSPECIFIED
Ministerio de Ciencia e Innovación (MICINN)UNSPECIFIED
Smithsonian InstitutionUNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
Academia SinicaUNSPECIFIED
Russian Foundation for Basic ResearchUNSPECIFIED
Academy of FinlandUNSPECIFIED
Japan Society for the Promotion of Science (JSPS)UNSPECIFIED
International Doctorate on Astroparticle Physics (IDAPP)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Issue or Number:7283
Record Number:CaltechAUTHORS:20100414-083033127
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:17968
Deposited By: Ruth Sustaita
Deposited On:14 May 2010 17:58
Last Modified:02 Jul 2020 21:59

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