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Conference Paper

Discovery of the VHE gamma-ray source HESS J1641-463


Hahn,  Joachim
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Oya, I., Dalton, M., Behera, B., Bordas, P., Djannati-Ataï, A., Hahn, J., et al. (2013). Discovery of the VHE gamma-ray source HESS J1641-463. In 2012 Fermi Symposium Proceedings. Retrieved from http://arxiv.org/abs/1303.0979v2.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0014-BFAD-E
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.