English

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

High Energy Astrophysical Phenomena 2013-03-07 v2

Abstract

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.

Keywords

Cite

@article{arxiv.1303.0979,
  title  = {Discovery of the VHE gamma-ray source HESS J1641-463},
  author = {I. Oya and M. Dalton and B. Behera and P. Bordas and A. Djannati-Ataï and J. Hahn and V. Marandon and U. Schwanke and G. Spengler and H. E. S. S. Collaboration},
  journal= {arXiv preprint arXiv:1303.0979},
  year   = {2013}
}

Comments

5 pages, 5 figures, 2012 Fermi Symposium proceedings - eConf C121028