dc.contributor.author | A. ABDO, A. | |
dc.contributor.author | ACKERMANN, Markus | |
dc.contributor.author | AJELLO, Marco | |
dc.contributor.author | ANTOLINI, E. | |
dc.contributor.author | BALDINI, Luca | |
hal.structure.identifier | Astrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)] | |
dc.contributor.author | BALLET, Jean | |
dc.contributor.author | BARBIELLINI, Guido | |
dc.contributor.author | BASTIERI, D. | |
dc.contributor.author | BECHTOL, K. | |
dc.contributor.author | BELLAZZINI, R. | |
dc.contributor.author | BERENJI, B. | |
dc.contributor.author | D. BLANDFORD, R. | |
dc.contributor.author | BONAMENTE, E. | |
dc.contributor.author | W. BORGLAND, A. | |
dc.contributor.author | BREGEON, J. | |
dc.contributor.author | BREZ, A. | |
dc.contributor.author | BRIGIDA, M. | |
hal.structure.identifier | Laboratoire Leprince-Ringuet [LLR] | |
dc.contributor.author | BRUEL, Pascal | |
dc.contributor.author | BUEHLER, R. | |
dc.contributor.author | BUSON, S. | |
dc.contributor.author | A. CALIANDRO, G. | |
dc.contributor.author | A. CAMERON, R. | |
dc.contributor.author | CANNON, A. | |
dc.contributor.author | CARAVEO, P. A. | |
dc.contributor.author | CARRIGAN, S. | |
hal.structure.identifier | Astrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)] | |
dc.contributor.author | M. CASANDJIAN, J. | |
dc.contributor.author | CECCHI, C. | |
dc.contributor.author | ÇELIK, Ö. | |
dc.contributor.author | CHARLES, E. | |
dc.contributor.author | CHEKHTMAN, A. | |
dc.contributor.author | C. CHEUNG, C. | |
dc.contributor.author | CHIANG, J. | |
dc.contributor.author | CIPRINI, S. | |
dc.contributor.author | CLAUS, R. | |
hal.structure.identifier | Laboratoire de Physique Théorique et Astroparticules [LPTA] | |
dc.contributor.author | COHEN-TANUGI, J. | |
dc.contributor.author | CONRAD, J. | |
dc.contributor.author | COSTAMANTE, L. | |
dc.contributor.author | CUTINI, S. | |
dc.contributor.author | D. DERMER, C. | |
dc.contributor.author | DE PALMA, F. | |
dc.contributor.author | DONATO, D. | |
dc.contributor.author | DO COUTO E SILVA, E. | |
dc.contributor.author | S. DRELL, P. | |
dc.contributor.author | DUBOIS, R. | |
hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
dc.contributor.author | ESCANDE, L. | |
dc.contributor.author | FAVUZZI, C. | |
hal.structure.identifier | Laboratoire Leprince-Ringuet [LLR] | |
dc.contributor.author | J. FEGAN, S. | |
dc.contributor.author | FINKE, J. | |
dc.contributor.author | B. FOCKE, W. | |
hal.structure.identifier | Laboratoire Leprince-Ringuet [LLR] | |
dc.contributor.author | FORTIN, P. | |
dc.contributor.author | FRAILIS, M. | |
dc.contributor.author | FUKAZAWA, Y. | |
dc.contributor.author | FUNK, S. | |
dc.contributor.author | FUSCO, P. | |
dc.contributor.author | GARGANO, F. | |
dc.contributor.author | GASPARRINI, D. | |
dc.contributor.author | GEHRELS, N. | |
dc.contributor.author | GERMANI, S. | |
dc.contributor.author | GIGLIETTO, N. | |
dc.contributor.author | GIORDANO, F. | |
dc.contributor.author | GIROLETTI, M. | |
dc.contributor.author | GLANZMAN, T. | |
dc.contributor.author | GODFREY, G. | |
hal.structure.identifier | Astrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)] | |
dc.contributor.author | A. GRENIER, I. | |
dc.contributor.author | GUIRIEC, S. | |
dc.contributor.author | HADASCH, D. | |
dc.contributor.author | HAYASHIDA, M. | |
dc.contributor.author | HAYS, E. | |
dc.contributor.author | E. HUGHES, R. | |
dc.contributor.author | ITOH, R. | |
dc.contributor.author | JÓHANNESSON, G. | |
dc.contributor.author | S. JOHNSON, A. | |
dc.contributor.author | N. JOHNSON, W. | |
dc.contributor.author | KAMAE, T. | |
dc.contributor.author | KATAGIRI, H. | |
dc.contributor.author | KATAOKA, J. | |
hal.structure.identifier | Centre d'étude spatiale des rayonnements [CESR] | |
dc.contributor.author | KNÖDLSEDER, Jürgen | |
dc.contributor.author | KUSS, M. | |
dc.contributor.author | LANDE, J. | |
dc.contributor.author | LARSSON, S. | |
dc.contributor.author | LATRONICO, L. | |
dc.contributor.author | LEE, S.-H. | |
dc.contributor.author | LLENA GARDE, M. | |
dc.contributor.author | LONGO, F. | |
dc.contributor.author | LOPARCO, F. | |
hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
dc.contributor.author | LOTT, B. | |
dc.contributor.author | N. LOVELLETTE, M. | |
dc.contributor.author | LUBRANO, P. | |
dc.contributor.author | MAKEEV, A. | |
dc.contributor.author | N. MAZZIOTTA, M. | |
dc.contributor.author | E. MCENERY, J. | |
hal.structure.identifier | Laboratoire de Physique Théorique et Astroparticules [LPTA] | |
dc.contributor.author | MEHAULT, J. | |
dc.contributor.author | F. MICHELSON, P. | |
dc.contributor.author | MIZUNO, T. | |
dc.contributor.author | MONTE, C. | |
dc.contributor.author | E. MONZANI, M. | |
dc.contributor.author | MORSELLI, A. | |
dc.contributor.author | V. MOSKALENKO, I. | |
dc.contributor.author | MURGIA, S. | |
dc.contributor.author | NAKAMORI, T. | |
hal.structure.identifier | Astrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)] | |
dc.contributor.author | NAUMANN-GODO, M. | |
dc.contributor.author | NISHINO, S. | |
dc.contributor.author | L. NOLAN, P. | |
dc.contributor.author | P. NORRIS, J. | |
hal.structure.identifier | Laboratoire de Physique Théorique et Astroparticules [LPTA] | |
dc.contributor.author | NUSS, E. | |
dc.contributor.author | OHSUGI, T. | |
dc.contributor.author | OKUMURA, A. | |
dc.contributor.author | OMODEI, N. | |
dc.contributor.author | ORLANDO, E. | |
dc.contributor.author | F. ORMES, J. | |
dc.contributor.author | OZAKI, M. | |
dc.contributor.author | PANEQUE, D. | |
dc.contributor.author | H. PANETTA, J. | |
hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
dc.contributor.author | PARENT, D. | |
hal.structure.identifier | Laboratoire de Physique Théorique et Astroparticules [LPTA] | |
dc.contributor.author | PELASSA, V. | |
dc.contributor.author | PEPE, M. | |
dc.contributor.author | PESCE-ROLLINS, M. | |
hal.structure.identifier | Laboratoire de Physique Théorique et Astroparticules [LPTA] | |
dc.contributor.author | PIRON, F. | |
dc.contributor.author | PORTER, T.A. | |
dc.contributor.author | RAINÒ, S. | |
dc.contributor.author | RANDO, R. | |
dc.contributor.author | RAZZANO, M. | |
dc.contributor.author | REIMER, A. | |
dc.contributor.author | REIMER, O. | |
dc.contributor.author | RITZ, S. | |
dc.contributor.author | ROTH, M. | |
dc.contributor.author | F.-W. SADROZINSKI, H. | |
hal.structure.identifier | Laboratoire Leprince-Ringuet [LLR] | |
dc.contributor.author | SANCHEZ, D. | |
dc.contributor.author | SANDER, A. | |
dc.contributor.author | K. SCHINZEL, F. | |
dc.contributor.author | SGRÒ, C. | |
dc.contributor.author | J. SISKIND, E. | |
dc.contributor.author | D. SMITH, P. | |
dc.contributor.author | V. SOKOLOVSKY, K. | |
dc.contributor.author | SPANDRE, G. | |
dc.contributor.author | SPINELLI, P. | |
dc.contributor.author | S. STRICKMAN, M. | |
dc.contributor.author | J. SUSON, D. | |
dc.contributor.author | TAKAHASHI, H. | |
dc.contributor.author | TANAKA, T. | |
dc.contributor.author | B. THAYER, J. | |
dc.contributor.author | G. THAYER, J. | |
dc.contributor.author | J. THOMPSON, D. | |
hal.structure.identifier | Astrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)] | |
dc.contributor.author | TIBALDO, L. | |
dc.contributor.author | F. TORRES, D. | |
dc.contributor.author | TOSTI, G. | |
dc.contributor.author | TRAMACERE, A. | |
dc.contributor.author | UEHARA, T. | |
dc.contributor.author | L. USHER, T. | |
dc.contributor.author | VANDENBROUCKE, J. | |
dc.contributor.author | VASILEIOU, V. | |
hal.structure.identifier | Centre d'étude spatiale des rayonnements [CESR] | |
dc.contributor.author | VILCHEZ, N. | |
dc.contributor.author | VITALE, V. | |
dc.contributor.author | P. WAITE, A. | |
dc.contributor.author | WALLACE, E. | |
dc.contributor.author | WANG, P. | |
dc.contributor.author | L. WINER, B. | |
dc.contributor.author | S. WOOD, K. | |
dc.contributor.author | YANG, Z. | |
dc.contributor.author | YLINEN, T. | |
dc.contributor.author | ZIEGLER, M. | |
dc.contributor.author | BERDYUGIN, A. | |
dc.contributor.author | BOETTCHER, M. | |
dc.contributor.author | CARRAMIÑANA, A. | |
dc.contributor.author | CARRASCO, L. | |
dc.contributor.author | DE LA FUENTE, E. | |
dc.contributor.author | DILTZ, C. | |
dc.contributor.author | HOVATTA, T. | |
dc.contributor.author | KADENIUS, V. | |
dc.contributor.author | KOVALEV, Y.Y. | |
dc.contributor.author | LÄHTEENMÄKI, A. | |
dc.contributor.author | LINDFORS, E. | |
dc.contributor.author | P. MARSCHER, A. | |
dc.contributor.author | NILSSON, K. | |
dc.contributor.author | PEREIRA, D. | |
dc.contributor.author | REINTHAL, R. | |
dc.contributor.author | ROUSTAZADEH, P. | |
dc.contributor.author | SAVOLAINEN, T. | |
dc.contributor.author | SILLANPÄÄ, A. | |
dc.contributor.author | O. TAKALO, L. | |
dc.contributor.author | TORNIKOSKI, M. | |
dc.date.issued | 2011-04-01 | |
dc.identifier.issn | 0004-637X | |
dc.description.abstractEn | We report on observations of BL Lacertae during the first 18 months of Fermi-LAT science operations and present results from a 48-day multifrequency coordinated campaign from 2008 August 19 to 2008 October 7. The radio to gamma-ray behavior of BL Lac is unveiled during a low activity state thanks to the coordinated observations of radio-band (Metsahovi and VLBA), near-IR/optical (Tuorla, Steward, OAGH and MDM) and X-ray (RXTE and Swift) observatories. No variability was resolved in gamma-rays during the campaign, and the brightness level was 15 times lower than the level of the 1997 EGRET outburst. Moderate and uncorrelated variability has been detected in UV and X-rays. The X-ray spectrum is found to be concave indicating the transition region between the low and high energy component of the spectral energy distribution (SED). VLBA observation detected a synchrotron spectrum self-absorption turnover in the innermost part of the radio jet appearing to be elongated and inhomogeneous, and constrained the average magnetic field there to be less than 3 G. Over the following months BL Lac appeared variable in gamma-rays, showing flares (in 2009 April and 2010 January). There is no evidence for correlation of the gamma-rays with the optical flux monitored from the ground in 18 months. The SED may be described by a single zone or two zone synchrotron self-Compton (SSC) model, but a hybrid SSC plus external radiation Compton (ERC) model seems preferred based on the observed variability and the fact that it provides a fit closest to equipartition. | |
dc.language.iso | en | |
dc.publisher | American Astronomical Society | |
dc.subject.en | BL Lacertae objects: general | |
dc.subject.en | BL Lacertae objects: individual (BL Lacertae) | |
dc.subject.en | galaxies: jets | |
dc.subject.en | gamma rays: galaxies | |
dc.subject.en | radiation mechanisms: non-thermal | |
dc.subject.en | X-rays: galaxies | |
dc.title.en | The first Fermi multifrequency campaign on BL Lacertae: characterizing the low-activity state of the eponymous blazar | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1088/0004-637X/730/2/101 | |
dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE] | |
dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE] | |
dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO] | |
dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO] | |
dc.identifier.arxiv | 1101.5905 | |
bordeaux.journal | The Astrophysical Journal | |
bordeaux.page | 101 | |
bordeaux.volume | 730 | |
bordeaux.peerReviewed | oui | |
hal.identifier | in2p3-00587827 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Non spécifiée | |
hal.origin.link | https://hal.archives-ouvertes.fr//in2p3-00587827v1 | |
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