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Search for pulsed VHE gamma-ray emission from young pulsars with HESS

  • F. Aharonian
  • , A. G. Akhperjanian
  • , A. R. Bazer-Bachi
  • , M. Beilicke
  • , W. Benbow
  • , D. Berge
  • , K. Bernlöhr
  • , C. Boisson
  • , O. Bolz
  • , V. Borrel
  • , I. Braun
  • , E. Brion
  • , A. M. Brown
  • , R. Bühler
  • , I. Büsching
  • , T. Boutelier
  • , S. Carrigan
  • , P. M. Chadwick
  • , L. M. Chounet
  • , G. Coignet
  • R. Cornils, L. Costamante, B. Degrange, H. J. Dickinson, A. Djannati-Ataï, L. O.C. Drury, G. Dubus, K. Egberts, T. Eifert, D. Emmanoulopoulos, P. Espigat, C. Farnier, F. Feinstein, E. Ferrero, A. Fiasson, G. Fontaine, Seb Funk, S. Funk, M. Füßling, 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, E. Kendziorra, M. Kerschhaggl, B. Khélifi, Nu Komin, K. Kosack, G. Lamanna, I. J. Latham, R. Le Gallou, A. Lemière, M. Lemoine-Goumard, T. Lohse, R. N. Manchester, J. M. Martin, O. Martineau-Huynh, A. Marcowith, C. Masterson, G. Maurin, T. J.L. McComb, E. Moulin, M. De Naurois, D. Nedbal, S. J. Nolan, A. Noutsos, J. P. Olive, K. J. Orford, J. L. Osborne, M. Panter, G. Pelletier, P. O. Petrucci, S. Pita, G. Pühlhofer, M. Punch, S. Ranchon, B. C. Raubenheimer, M. Raue, S. M. Rayner, O. Reimer, J. Ripken, L. Rob, L. Rolland, S. Rosier-Lees, G. Rowell, V. Sahakian, A. Santangelo, L. Saugé, S. Schlenker, R. Schlickeiser, F. Schmidt, R. Schröder, U. Schwanke, S. Schwarzburg, S. Schwemmer, A. Shalchi, H. Sol, D. Spangler, F. Spanier, R. Steenkamp, C. Stegmann, G. Superina, P. H. Tam, J. P. Tavernet, R. Terrier, M. Tluczykont, C. Van Eldik, G. Vasileiadis, C. Venter, J. P. Vialle, P. Vincent, H. J. Volk, S. J. Wagner, M. Ward
  • Max-Planck-Institut für Kernphysik
  • Yerevan Physics Institute
  • CNRS
  • Universität Hamburg
  • European Organization for Nuclear Research
  • Humboldt-Universität zu Berlin
  • Institut Pierre Simon Laplace, CNRS and CEA
  • Durham University
  • North-West University
  • Ip Paris
  • Université Paris-Sud
  • European Associated Laboratory for Gamma-Ray Astronomy
  • Astroparticule and Cosmol APC
  • Dublin Institute for Advanced Studies
  • University of Geneva
  • Landessternwarte Heidelberg
  • Laboratoire Univers et Particules de Montpellier
  • Friedrich-Alexander University (FAU) Erlangen-Nürnberg and Universitätsklinikum Erlangen
  • University of Leeds
  • University of Tübingen
  • Commonwealth Scientific and Industrial Research Organization
  • Universités Paris VI and VII
  • Charles University
  • Stanford University
  • Ruhr-University Bochum
  • University of Adelaide
  • University of Chicago
  • University of Namibia
  • c/o DESY

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

Aims. We present the results of a search for pulsed very-high-energy (VHE) γ-ray emission from young pulsars using data taken with the HESS imaging atmospheric Cherenkov telescope system. Methods. Data on eleven pulsars, selected according to their spin-down luminosity relative to distance, are searched for y-ray signals with periodicity at the respective pulsar spin period. Special analysis efforts were made to improve the sensitivity in the 100 GeV γ-ray energy domain in an attempt to reduce the gap between satellite and ground-based γ-ray instruments. Results. No significant evidence for pulsed emission is found in any data set. Differential upper limits on pulsed energy flux are determined for all selected pulsars in the approximate γ-ray energy range between 100 GeV and 50 TeV, using different limit determination methods, testing a wide range of possible pulsar light curves and energy spectra. Conclusions. The limits derived here imply that the magnetospheric VHE γ-ray production efficiency in young pulsars is less than 10-4 of the pulsar spin-down luminosity, requiring spectral turnovers for the high-energy emission of four established γ-ray pulsars, and constrain the inverse Compton radiation component predicted by several outer gap models.

langue originaleAnglais
Pages (de - à)543-554
Nombre de pages12
journalAstronomy and Astrophysics
Volume466
Numéro de publication2
Les DOIs
étatPublié - 1 janv. 2007
Modification externeOui

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