Wednesday, March 6, 2013

1303.0979 (I. Oya et al.)

Discovery of the VHE gamma-ray source HESS J1641-463    [PDF]

I. Oya, M. Dalton, B. Behera, P. Bordas, A. Djannati-Ataï, J. Hahn, V. Marandon, U. Schwanke, G. Spengler for the H. E. S. S. Collaboration
A new TeV source, HESS J1641-463, has been serendipitously discovered in the Galactic plane by the High Energy Stereoscopic System (H.E.S.S.) at a significance level of 8.6 standard deviations. The observations of HESS J1641-463 were performed between 2004 and 2011 and the source has a moderate flux level of 1.7% of the Crab Nebula flux at E > 1 TeV. HESS J1641-463 has a rather hard photon index of 1.99 +- 0.13_stat +- 0.20_sys. HESS J1641-463 is positionally coincident with the radio supernova remnant SNR G338.5+0.1, but no clear X-ray counterpart has been found in archival Chandra observations of the region. Different possible VHE production scenarios will be discussed in this contribution.
View original: http://arxiv.org/abs/1303.0979

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