HAL : in2p3-00118195, version 1

arXiv : astro-ph/0611813

DOI : 10.1051/0004-6361:20066381

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Astronomy and Astrophysics 464 (2007) 235-243

Primary particle acceleration above 100 TeV in the shell-type Supernova Remnant RX J1713.7-3946 with deep H.E.S.S. observations

F. Aharonian, A.G. Akhperjanian, A.R. Bazer-Bachi1, M. Beilicke, W. Benbow, D. Berge, K. Bernlöhr, C. Boisson2, O. Bolz, V. Borrel1, I. Braun, E. Brion3, A.M. Brown, R. Bühler, I. Büsching, S. Carrigan, P.M. Chadwick, L.-M. Chounet4, G. Coignet5, R. Cornils, L. Costamante, B. Degrange4, H.J. Dickinson, A. Djannati-Ataï6, L.O'C. Drury, G. Dubus4, K. Egberts, D. Emmanoulopoulos, P. Espigat6, F. Feinstein7, E. Ferrero, A. Fiasson7, G. Fontaine4, Seb. Funk, S. Funk, M. F¨ußling, Y.A. Gallant7, B. Giebels4, J.F. Glicenstein3, B. Glück, P. Goret3, C. Hadjichristidis, D. Hauser, M. Hauser, G. Heinzelmann, G. Henri8, G. Hermann, J.A. Hinton, A. Hoffmann, W. Hofmann, M. Holleran, S. Hoppe, D. Horns, A. Jacholkowska7, O.C. de Jager, E. Kendziorra, M. Kerschhaggl, B. Khélifi4, Nu. Komin7, A. Konopelko, K. Kosack, G. Lamanna5, I.J. Latham, R. Le Gallou, A. Lemière6, M. Lemoine-Goumard4, T. Lohse, J.M. Martin2, O. Martineau-Huynh9, A. Marcowith1, C. Masterson, G. Maurin6, T.J.L. Mccomb, E. Moulin7, M. De Naurois9, D. Nedbal, S.J. Nolan, A. Noutsos, J.-P. Olive1, K.J. Orford, J.L. Osborne, M. Panter, G. Pelletier8, S. Pita6, G. Pühlhofer, M. Punch6, S. Ranchon5, B.C. Raubenheimer, M. Raue, S.M. Rayner, A. Reimer, O. Reimer †, J. Ripken, L. Rob, L. Rolland3, S. Rosier-Lees5, G. Rowell, V. Sahakian, A. Santangelo, L. Saugé8, S. Schlenker, R. Schlickeiser, R. Schröder, U. Schwanke, S. Schwarzburg, S. Schwemmer, A. Shalchi, H. Sol2, D. Spangler, F. Spanier, R. Steenkamp, C. Stegmann, G. Superina4, P.H. Tam, J.-P. Tavernet9, R. Terrier6, M. Tluczykont4, C. Van Eldik, G. Vasileiadis7, C. Venter, J.P. Vialle5, P. Vincent9, H.J. Völk, S.J. Wagner, M. Ward

HESS Collaboration(s)

(2007)

We present deep H.E.S.S. observations of the supernova remnant (SNR) RX J1713.7-3946. Combining data of three years - from 2003 to 2005 - we obtain significantly increased statistics and energy coverage as compared to earlier 2003 & 2004 results. The data are analysed separately for the different years. Very good agreement of the gamma-ray morphology and the differential spectra is found when comparing the three years. The combined gamma-ray image of the 2004 and 2005 data reveals the morphology of RX J1713.7-3946 with unprecedented precision. An angular resolution of 0.06 deg is achieved, revealing the detailed structure of the remnant. The combined spectrum of all three years extends over three orders of magnitude, with significant gamma-ray emission approaching 100 TeV. The cumulative significance above 30 TeV is 4.8 sigma, while for energies between 113 and 294 TeV an upper limit on the gamma-ray flux of 1.6 x 10^-16 cm^-2 s^-1 is obtained. The energy coverage of the H.E.S.S. data is presumably at the limit of present generation Cherenkov telescopes. The measurement of significant gamma-ray emission beyond 30 TeV formally implies the existence of primary particles of at least that energy. However, for realistic scenarios of very-high-energy gamma-ray production, the Inverse Compton scattering of very-high-energy electrons and pi^0 decay following inelastic proton-proton interactions, the measured gamma-ray energies imply that efficient acceleration of primary particles to energies exceeding 100 TeV is taking place in the shell of the SNR RX J1713.7-3946.

1 :	CESR - Centre d'étude spatiale des rayonnements
2 :	LUTH - Laboratoire Univers et Théories
3 :	DAPNIA - Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée
4 :	LLR - Laboratoire Leprince-Ringuet
5 :	LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
6 :	APC - AstroParticule et Cosmologie
7 :	LPTA - Laboratoire de Physique Théorique et Astroparticules
8 :	LAOG - Laboratoire d'Astrophysique de Grenoble
9 :	LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies

équipe(s) de recherche : APC - AHE

Thème(s)

:

Planète et Univers/Astrophysique Physique/Astrophysique/Cosmologie et astrophysique extra-galactique Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique

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Contributeur : Nicole Berger <>

Soumis le : Lundi 21 Mai 2007, 11:33:58

Dernière modification le : Lundi 18 Juin 2012, 14:20:12