%0 Journal Article
%T PKS 2005-489 at VHE: Four Years of Monitoring with HESS and Simultaneous Multi-wavelength Observations
%+ Centre d'étude spatiale des rayonnements (CESR)
%+ AstroParticule et Cosmologie (APC (UMR_7164))
%+ Laboratoire Univers et Théories (LUTH (UMR_8102))
%+ Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE)
%+ Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU)
%+ Laboratoire d'Astrophysique de Grenoble (LAOG)
%+ Laboratoire Leprince-Ringuet (LLR)
%+ Laboratoire d'Annecy de Physique des Particules (LAPP)
%+ APC - Astrophysique des Hautes Energies (APC - AHE)
%+ Laboratoire de Physique Théorique et Astroparticules (LPTA)
%A Acero, Fabio
%A Aharonian, F.
%A Akhperjanian, A.G.
%A Anton, G.
%A Barres de Almeida, U.
%A Bazer-Bachi, A.R.
%A Becherini, Y.
%A Behera, B.
%A Benbow, W.
%A Bernlöhr, K.
%A Bochow, A.
%A Boisson, C.
%A Bolmont, J.
%A Borrel, V.
%A Brucker, J.
%A Brun, F.
%A Brun, P.
%A Bühler, R.
%A Bulik, T.
%A Büsching, I.
%A Boutelier, T.
%A Chadwick, P.M.
%A Charbonnier, A.
%A Chaves, R.C.G.
%A Cheesebrough, A.
%A Chounet, L.-M.
%A Clapson, A.C.
%A Coignet, G.
%A Costamante, L.
%A Dalton, M.
%A Daniel, M.K.
%A Davids, I.D.
%A Degrange, B.
%A Deil, C.
%A Dickinson, H.J.
%A Djannati-Ataï, A.
%A Domainko, W.
%A Drury, L.O'C.
%A Dubois, F.
%A Dubus, G.
%A Dyks, J.
%A Dyrda, M.
%A Egberts, K.
%A Eger, P.
%A Espigat, P.
%A Fallon, L.
%A Farnier, C.
%A Fegan, S.
%A Feinstein, F.
%A Fiasson, A.
%A Förster, A.
%A Fontaine, G.
%A Füssling, M.
%A Gabici, S.
%A Gallant, Y.A.
%A Gérard, L.
%A Gerbig, D.
%A Giebels, B.
%A Glicenstein, J.F.
%A Glück, B.
%A Goret, P.
%A Göring, D.
%A Hauser, M.
%A Heinz, S.
%A Heinzelmann, G.
%A Henri, G.
%A Hermann, G.
%A Hinton, J.A.
%A Hoffmann, A.
%A Hofmann, W.
%A Hofverberg, P.
%A Holleran, M.
%A Hoppe, S.
%A Horns, D.
%A Jacholkowska, A.
%A de Jager, O.C.
%A Jahn, C.
%A Jung, I.
%A Katarzynski, K.
%A Katz, U.
%A Kaufmann, S.
%A Kerschhaggl, M.
%A Khangulyan, D.
%A Khélifi, B.
%A Keogh, D.
%A Klochkov, D.
%A Kluzniak, W.
%A Kneiske, T.
%A Komin, Nu.
%A Kosack, K.
%A Kossakowski, R.
%A Lamanna, G.
%A Lenain, J.-P.
%A Lohse, T.
%A Marandon, V.
%A Martineau-Huynh, O.
%A Marcowith, A.
%A Masbou, Julien
%A Maurin, D.
%A Mccomb, T.J.L.
%A Medina, M.C.
%A Méhault, J.
%A Moderski, R.
%A Moulin, Emmanuel
%A Naumann-Godo, M.
%A de Naurois, M.
%A Nedbal, D.
%A Nekrassov, D.
%A Nicholas, B.
%A Niemiec, J.
%A Nolan, S.J.
%A Ohm, S.
%A Olive, J.-F.
%A de Oña Wilhelmi, E.
%A Orford, K.J.
%A Ostrowski, M.
%A Panter, M.
%A Paz Arribas, M.
%A Pedaletti, G.
%A Pelletier, G.
%A Petrucci, P.-O.
%A Pita, S.
%A Pühlhofer, G.
%A Punch, M.
%A Quirrenbach, A.
%A Raubenheimer, B.C.
%A Raue, M.
%A Rayner, S.M.
%A Renaud, M.
%A Rieger, F.
%A Ripken, J.
%A Rob, L.
%A Rosier-Lees, S.
%A Rowell, G.
%A Rudak, B.
%A Rulten, C.B.
%A Ruppel, J.
%A Sahakian, V.
%A Santangelo, A.
%A Schlickeiser, R.
%A Schöck, F.M.
%A Schwanke, U.
%A Schwarzburg, S.
%A Schwemmer, S.
%A Shalchi, A.
%A Sikora, M.
%A Skilton, J.L.
%A Sol, H.
%A Stawarz, Ł.
%A Steenkamp, R.
%A Stegmann, C.
%A Stinzing, F.
%A Superina, G.
%A Szostek, A.
%A Tam, P.H.
%A Tavernet, J.-P.
%A Terrier, R.
%A Tibolla, O.
%A Tluczykont, M.
%A van Eldik, C.
%A Vasileiadis, G.
%A Venter, C.
%A Venter, L.
%A Vialle, J.P.
%A Vincent, P.
%A Vivier, M.
%A Völk, H.J.
%A Volpe, F.
%A Wagner, S.J.
%A Ward, M.
%A Zdziarski, A.A.
%A Zech, A.
%Z 13 pages, 11 figures. Astronomy and Astrophysics, in press. Minor typographical/text changes
%< avec comité de lecture
%@ 0004-6361
%J Astronomy and Astrophysics - A&A
%I EDP Sciences
%V 511
%P A52
%8 2010
%D 2010
%Z 0911.2709
%R 10.1051/0004-6361/200913073
%Z Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
%Z Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]Journal articles
%X VHE observations of PKS 2005-489 were made with HESS from 2004 through 2007, together with three simultaneous multi-wavelength campaigns performed with XMM-Newton and RXTE in 2004 and 2005. A strong VHE signal, ~17sigma total, is detected during the four years of HESS observations (90.3 hrs live time). The integral flux above the average analysis threshold of 400 GeV is ~3% of the Crab and varies weakly on time-scales from days to years. At X-ray energies the flux is observed to vary by more than an order of magnitude between 2004 and 2005. Strong changes in the X-ray spectrum (DeltaGamma~0.7) are also observed, which appear to be mirrored in the VHE band. The SED of PKS 2005-489, constructed for the first time with contemporaneous data on both humps, shows significant evolution. The large flux variations in the X-ray band, coupled with weak or no variations in the VHE band and a similar spectral behavior, suggest the emergence of a new, separate, harder emission component in September 2005.
%G English
%Z HESS
%L in2p3-00445182
%U https://hal.in2p3.fr/in2p3-00445182
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%~ UNIV-MONTP2
%~ CNES
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%~ LUTH
%~ OMP
%~ OMP-CESR
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%~ IRFU-APC
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