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Hess observarions of the prompt and afterglow phases of GRB 060602B

  • F. Aharonian
  • , A. G. Akhperjanian
  • , U. Barres De Almeida
  • , A. R. Bazer-Bachi
  • , B. Behera
  • , M. Beilicke
  • , W. Benbow
  • , K. Bernlöhr
  • , C. Boisson
  • , V. Borrel
  • , I. Braun
  • , E. Brion
  • , J. Brucker
  • , R. Bühler
  • , T. Bulik
  • , I. Büsching
  • , T. Boutelier
  • , S. Carrigan
  • , P. M. Chadwick
  • , R. Chaves
  • L. M. Chounet, A. C. Clapson, G. Coignet, R. Cornils, L. Costamante, M. Dalton, B. Degrange, H. J. Dickinson, A. Djannati-Ata, W. Domainko, L. O.C. Drury, F. Dubois, G. Dubus, J. Dyks, K. Egberts, D. Emmanoulopoulos, P. Espigat, C. Farnier, F. Feinstein, A. Fiasson, A. Förster, G. Fontaine, M. Füling, S. Gabici, Y. A. Gallant, B. Giebels, J. F. Glicenstein, B. Glück, P. Goret, C. Hadjichristidis, D. Hauser, M. Hauser, G. Heinzelmann, G. Henri, G. Hermann, J. A. Hinton, A. Hoffmann, W. Hofmann, M. Holleran, S. Hoppe, D. Horns, A. Jacholkowska, O. C. De Jager, I. Jung, K. Katarzyński, E. Kendziorra, M. Kerschhaggl, D. Khangulyan, B. Khélifi, D. Keogh, Nu Komin, K. Kosack, G. Lamanna, I. J. Latham, J. P. Lenain, T. Lohse, J. M. Martin, O. Martineau-Huynh, A. Marcowith, C. Masterson, D. Maurin, T. J.L. McComb, R. Moderski, E. Moulin, M. Naumann-Godo, M. De Naurois, D. Nedbal, D. Nekrassov, S. J. Nolan, S. Ohm, J. P. Olive, E. De Õa Wilhelmi, K. J. Orford, J. L. Osborne, M. Ostrowski, M. Panter, G. Pedaletti, G. Pelletier, P. O. Petrucci, S. Pita, G. Pühlhofer, M. Punch, A. Quirrenbach, B. C. Raubenheimer, M. Raue, S. M. Rayner, M. Renaud, F. Rieger, J. Ripken, L. Rob, S. Rosier-Lees, G. Rowell, B. Rudak, J. Ruppel, V. Sahakian, A. Santangelo, R. Schlickeiser, F. M. Schöck, R. Schröder, U. Schwanke, S. Schwarzburg, S. Schwemmer, A. Shalchi, H. Sol, D. Spangler, L. Stawarz, R. Steenkamp, C. Stegmann, G. Superina, P. H. Tam, J. P. Tavernet, R. Terrier, C. Van Eldik, G. Vasileiadis, C. Venter, J. P. Vialle, P. Vincent, M. Vivier, H. J. Völk, F. Volpe, S. J. Wagner, M. Ward, A. A. Zdziarski, A. Zech
  • Max-Planck-Institut für Kernphysik
  • Dublin Institute for Advanced Studies
  • Yerevan Physics Institute
  • Durham University
  • CAPES Foundation
  • Centre national de la recherche scientifique
  • University of Heidelberg
  • Universität Hamburg
  • Humboldt-Universität zu Berlin
  • LUTH - Laboratoire de l'Univers et de ses Theories
  • Institut Pierre Simon Laplace, CNRS and CEA
  • Friedrich-Alexander University (FAU) Erlangen-Nürnberg and Universitätsklinikum Erlangen
  • Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
  • North-West University
  • Université Paris-Sud
  • Astroparticule and Cosmol APC
  • Laboratoire Univers et Particules de Montpellier
  • University of Leeds
  • University of Tübingen
  • Nicolaus Copernicus University
  • Universités Paris VI and VII
  • Charles University
  • Jagiellonian University
  • University of Adelaide
  • Ruhr-University Bochum
  • University of Namibia

Research output: Contribution to journalArticlepeer-review

Abstract

We report on the first completely simultaneous observation of a gamma-ray burst (GRB) using an array of Imaging Atmospheric Cherenkov Telescopes, which is sensitive to photons in the very high energy (VHE) γ-ray range (≳ 100 GeV). On 2006 June 2, the Swift Burst Alert Telescope (BAT) registered an unusually soft γ-ray burst (GRB 060602B). The burst position was under observation using the High Energy Stereoscopic System (HESS) at the time the burst occurred. Data were taken before, during, and after the burst. A total of 5 hr of observations were obtained during the night of 2006 June 2-3, and five additional hours were obtained over the next three nights. No VHE γ-ray signal was found during the period covered by the HESS observations. The 99% confidence level flux upper limit (> 1 TeV) for the prompt phase (9 s) of GRB 060602B is 2.9 × 10-9 erg cm-2 s-1. Due to the very soft BAT spectrum of the burst compared with other Swift GRBs and its proximity to the Galactic center, the burst is likely associated with a Galactic X-ray burster, although the possibility of it being a cosmological GRB cannot be ruled out. We discuss the implications of our flux limits in the context of these two bursting scenarios.

Original languageEnglish
Pages (from-to)1068-1073
Number of pages6
JournalAstrophysical Journal
Volume690
Issue number2
DOIs
Publication statusPublished - 1 Jan 2009
Externally publishedYes

Keywords

  • Bursts-gamma rays
  • Gamma rays
  • Observations

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