Details

Autor(en) / Beteiligte

• Aharonian, F.
• Benkhali, F. A.
• Balenderan, S.
• Barnacka, A.
• Birsin, E.
• Bottcher, M.
• Bolmont, J.
• Bordas, P.
• Brucker, J.
• Carrigan, S.
• Casanova, S.
• Cerruti, M.
• Chalme-Calvet, R.
• Conrad, J.
• Couturier, C.
• Dalton, M.
• Davids, I. D.
• Deil, C.
• deWilt, P.
• Dickinson, H. J.
• Dutson, K.
• Dyks, J.
• Egberts, K.
• Espigat, P.
• Farnier, C.
• Fegan, S.
• Fernandes, M. V.
• Fernandez, D.
• Forster, A.
• Fussling, M.
• Gajdus, M.
• Garrigoux, T.
• Grondin, M.- H.
• Hermann, G.
• Hofmann, W.
• Hofverberg, P.
• Holler, M.
• Jahn, C.
• Jamrozy, M.
• Janiak, M.
• Jankowsky, F.
• Kastendieck, M. A.
• Katz, U.
• Kaufmann, S.
• Kieffer, M.
• Kneiske, T.
• Kolitzus, D.
• Krayzel, F.
• Kruger, P. P.
• Lamanna, G.
• Lefaucheur, J.
• Lemiere, A.
• Lemoine-Goumard, M.
• Lohse, T.
• Maxted, N.
• Mayer, M.
• Menzler, U.
• Meyer, M.
• Moulin, E.
• Naumann, C. L.
• de Naurois, M.
• Niemiec, J.
• Nolan, S. J.
• Wilhelmi, E. d. O.
• Ostrowski, M.
• Oya, I.
• Panter, M.
• Parsons, R. D.
• Arribas, M. P.
• Perez, J.
• Pita, S.
• Puhlhofer, G.
• Raue, M.
• Reimer, A.
• Renaud, M.
• Rudak, B.
• Sahakian, V.
• Schulz, A.
• Schwanke, U.
• Schwemmer, S.
• Steenkamp, R.
• Stegmann, C.
• Szostek, A.
• Tavernier, T.
• Tluczykont, M.
• van Eldik, C.
• van Soelen, B.
• Vasileiadis, G.
• Viana, A.
• Volk, H. J.
• Volpe, F.
• Wagner, S. J.
• Wagner, P.
• Weidinger, M.
• Weitzel, Q.
• Willmann, P.
• Wornlein, A.
• Wouters, D.
• Zacharias, M.
• Zdziarski, A. A.

Titel

TeV  -ray observations of the young synchrotron-dominated SNRs G1.9+0.3 and G330.2+1.0 with H.E.S.S

Ist Teil von

• Monthly notices of the Royal Astronomical Society, 2014-06, Vol.441 (1), p.790-799

Ort / Verlag

London: Oxford University Press

Erscheinungsjahr

2014

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The non-thermal nature of the X-ray emission from the shell-type supernova remnants (SNRs) G1.9+0.3 and G330.2+1.0 is an indication of intense particle acceleration in the shock fronts of both objects. This suggests that the SNRs are prime candidates for very-high-energy (VHE; E > 0.1 TeV) γ-ray observations. G1.9+0.3, recently established as the youngest known SNR in the Galaxy, also offers a unique opportunity to study the earliest stages of SNR evolution in the VHE domain. The purpose of this work is to probe the level of VHE γ-ray emission from both SNRs and use this to constrain their physical properties. Observations were conducted with the H.E.S.S. (High Energy Stereoscopic System) Cherenkov Telescope Array over a more than six-year period spanning 2004-2010. The obtained data have effective livetimes of 67 h for G1.9+0.3 and 16 h for G330.2+1.0. The data are analysed in the context of the multiwavelength observations currently available and in the framework of both leptonic and hadronic particle acceleration scenarios. No significant γ-ray signal from G1.9+0.3 or G330.2+1.0 was detected. Upper limits (99 per cent confidence level) to the TeV flux from G1.9+0.3 and G330.2+1.0 for the assumed spectral index ... = 2.5 were set at 5.6 x 10^sup -13^ cm^sup -2^ s^sup -1^ above 0.26 TeV and 3.2 x 10^sup -12^ cm^sup -2^ s^sup -1^ above 0.38 TeV, respectively. In a one-zone leptonic scenario, these upper limits imply lower limits on the interior magnetic field to B^sub G1.9^ ... 12 μG for G1.9+0.3 and to B^sub G330^ ... 8 μG for G330.2+1.0. In a hadronic scenario, the low ambient densities and the large distances to the SNRs result in very low predicted fluxes, for which the H.E.S.S. upper limits are not constraining. (ProQuest: ... denotes formulae/symbols omitted.)