{"paper":{"title":"Simultaneous multi-wavelength campaign on PKS 2005-489 in a high state","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. A. Abdo, A.A. Zdziarski, A. Barnacka, A. Bochow, A. Brez, A. Cannon, A.C. Clapson, A. Charbonnier, A. Cheesebrough, A. Chekhtman, A. Djannati-Ata\\\"i, A. Fiasson, A. F\\\"orster, A.G. Akhperjanian, A. Hoffmann, A. Jacholkowska, A. Lopatin, A. Makeev, A. Marcowith, A. Morselli, A. Okumura, A. P. Waite, A. Quirrenbach, A.R. Bazer-Bachi, A. Reimer, A. Sander, A. Santangelo, A. Sch\\\"onwald, A. Shalchi, A. S. Johnson, A. Szostek, A. Tramacere, A. Viana, A. W. Borgland, A. Wierzcholska, A. Zajczyk, A. Zech, B. Behera, B. Berenji, B. Degrange, B. Giebels, B. Gl\\\"uck, B. Kh\\'elifi, B. Lott, B. L. Winer, B. Nicholas, B. Opitz, B. Rudak, C. Boisson, C.B. Rulten, C. C. Cheung, C. Cecchi, C.-C. Lu, C. D. Dermer, C. Deil, C. Farnier, C. Favuzzi, C. Jahn, C. Monte, C. Sgr\\`o, C. Stegmann, C. van Eldik, C. Venter, D. Bastieri, D. Dumora, D. F. Torres, D. Gasparrini, D. Gerbig, D. G\\\"oring, D. Hadasch, D. Hampf, D. Horan, D. Horns, D. J. Suson, D. J. Thompson, D. Keogh, D. Khangulyan, D. Klochkov, D. Lennarz, D. Maurin, D. Nedbal, D. Nekrassov, D. Paneque, D. Parent, D. Sanchez, E. Bonamente, E. Cavazzuti, E. C. Ferrara, E. de O\\~na Wilhelmi, E. do Couto e Silva, E. Hays, E. J. Siskind, E. Moulin, E. Nuss, E. Orlando, E. Troja, F. Acero, F. Aharonian, F. Brun, F. de Palma, F. Dubois, F. Feinstein, F. Gargano, F. Giordano, F. Longo, F. Loparco, F.M. Sch\\\"ock, F. Piron, F. Rieger, F. Ryde, F. Stinzing, F. Volpe, G. A. Caliandro, G. Anton, G. Barbiellini, G. Coignet, G. Dubus, G. Fontaine, G. Godfrey, G. Heinzelmann, G. Henri, G. Hermann, G. J\\'ohannesson, G. Lamanna, G. M. Madejski, G. Pedaletti, G. Pelletier, G. P\\\"uhlhofer, G. Rowell, G. Spandre, G. Spengler, G. Tosti, G. Vasileiadis, G. Vianello, H. F.-W. Sadrozinski, H. Gast, H.J. Dickinson, H.J. V\\\"olk, H. Katagiri, H. Laffon, H. Sol, H.-S. Zechlin, H. Takahashi, I. A. Grenier, I. B\\\"usching, I.D. Davids, I. Jung, I. Sushch, I. V. Moskalenko, J.A. Hinton, J. Ballet, J. Becker, J. Bolmont, J. Bregeon, J. Brucker, J. B. Thayer, J. Chiang, J. Cohen-Tanugi, J. Conrad, J.D. Hague, J. Dyks, J. E. Grove, J. E. McEnery, J.F. Glicenstein, J-F. Olive, J. F. Ormes, J. G. Thayer, J. H. Panetta, J. Kataoka, J. Kn\\\"odlseder, J. Lande, J.L. Skilton, J. Masbou, J. M. Casandjian, J. M\\'ehault, J. Niemiec, J.-P. Lenain, J. P. Norris, J.-P. Tavernet, J.P. Vialle, J. Ripken, J. Ruppel, J. Vandenbroucke, K. Bechtol, K. Bernl\\\"ohr, K. Egberts, K. Katarzy\\'nski, K. Kosack, K. S. Wood, K. Valerius, L. Baldini, L. Escande, L. Fallon, L. G\\'erard, L. Latronico, L.-M. Chounet, L.O'C. Drury, L. Rob, {\\L}. Stawarz, L. Tibaldo, M. Ackermann, M. Ajello, M.A. Kastendieck, M. Brigida, M. Cerruti, M.C. Medina, M. Dalton, M. de Naurois, M. Dyrda, M. E. Monzani, M. Frailis, M. F\\\"u{\\ss}ling, M. Giroletti, M. Hauser, M. Jamrozy, M.K. Daniel, M. Kerschhaggl, M. Kuss, M. Naumann-Godo, M. N. Lovellette, M. N. Mazziotta, M. Ostrowski, M. Ozaki, M. Panter, M. Paz Arribas, M. Pepe, M. Pesce-Rollins, M. Punch, M. Raue, M. Razzano, M. Renaud, M. Sikora, M. S. Strickman, M. Tluczykont, M.V. Fernandes, M. Vivier, M. Vorster, M. Ward, M. Ziegler, N. Gehrels, N. Giglietto, N. Maxted, N. Nguyen, N. Omodei, Nu. Komin, N. Vilchez, \\\"O. \\c{C}elik, O.C. de Jager, O. Reimer, O. Tibolla, P. A. Caraveo, P. Bordas, P. Bruel, P. Brun, P. D. Smith, P. Eger, P. Espigat, P. F. Michelson, P. Fortin, P. Fusco, P. Giommi, P. Goret, P. Hofverberg, P.H. Tam, P. L. Nolan, P. Lubrano, P.M. Chadwick, P.-O. Petrucci, P. S. Drell, P. Spinelli, P. Vincent, P. Wang, R. A. Cameron, R. Bellazzini, R. Buehler, R.C.G. Chaves, R. Claus, R. D. Blandford, R. de los Reyes, R. Dubois, R. E. Hughes, R. Kossakowski, R. Moderski, R. Rando, R. Schlickeiser, R. Steenkamp, R. Terrier, S. Buson, S. Carrigan, S. Casanova, S. Ciprini, S. Cutini, S. Fegan, S. Gabici, S. Germani, S. Guiriec, S. Heinz, S.-H. Lee, S.J. Nolan, S.J. Wagner, S. Kaufmann, S.M. Rayner, S. Murgia, S. Nishino, S. Ohm, S. Pita, S. Rain\\`o, S. Rosier-Lees, S. Schwarzburg, S. Schwemmer, S. Vorobiov, T. A. Porter, T. Bulik, T. Glanzman, the Fermi LAT Collaboration: A. Abramowski, The H.E.S.S. Collaboration, T.J.L. McComb, T. Kamae, T. Kneiske, T. Lohse, T. L. Usher, T. Mizuno, T. Nakamori, T. Ohsugi, T. Takahashi, T. Tanaka, T. Uehara, T. Ylinen, U. Barres de Almeida, U. Katz, U. Schwanke, V. Borrel, V. Marandon, V. Pelassa, V. Sahakian, V. Vitale, W. B. Focke, W. Domainko, W. Hofmann, W. Klu\\'zniak, W. McConville, W. N. Johnson, Y.A. Gallant, Y. Becherini, Y. Fukazawa, Z. Yang","submitted_at":"2011-11-14T19:21:55Z","abstract_excerpt":"The high-frequency peaked BL Lac object PKS 2005-489 was the target of a multi-wavelength campaign with simultaneous observations in the TeV gamma-ray (H.E.S.S.), GeV gamma-ray (Fermi/LAT), X-ray (RXTE, Swift), UV (Swift) and optical (ATOM, Swift) bands. This campaign was carried out during a high flux state in the synchrotron regime. The flux in the optical and X-ray bands reached the level of the historical maxima. The hard GeV spectrum observed with Fermi/LAT connects well to the very high energy (VHE, E>100GeV) spectrum measured with H.E.S.S. with a peak energy between ~5 and 500 GeV. 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