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Type: Journal article
Title: HESS J1640-465 - an exceptionally luminous TeV γ-ray supernova remnant
Other Titles: HESS J1640-465 - an exceptionally luminous TeV gamma-ray supernova remnant
Author: Abramowski, A.
de Wilt, P.
Dickinson, H.
Maxted, N.
Mayer, M.
Rowell, G.
Citation: Monthly Notices of the Royal Astronomical Society, 2014; 439(3):2828-2836
Publisher: Oxford University Press
Issue Date: 2014
ISSN: 1365-2966
Organisation: Institute for Photonics & Advanced Sensing (IPAS)
Statement of
H.E.S.S. Collaboration, A. Abramowski...P. Dewilt...N. I. Maxted...G. al.
Abstract: The results of follow-up observations of the TeV γ-ray source HESS J1640−465 from 2004 to 2011 with the High Energy Stereoscopic System (HESS) are reported in this work. The spectrum is well described by an exponential cut-off power law with photon index Γ = 2.11 ± 0.09stat ± 0.10sys, and a cut-off energy of Ec=6.0+2.0−1.2 TeV. The TeV emission is significantly extended and overlaps with the northwestern part of the shell of the SNR G338.3−0.0. The new HESS results, a re-analysis of archival XMM–Newton data and multiwavelength observations suggest that a significant part of the γ-ray emission from HESS J1640−465 originates in the supernova remnant shell. In a hadronic scenario, as suggested by the smooth connection of the GeV and TeV spectra, the product of total proton energy and mean target density could be as high as WpnH ∼ 4 × 1052(d/10kpc)2 erg cm−3.
Keywords: Radiation mechanisms: non-thermal ISM: individual objects: G338.3−0.0 ISM: supernova remnants
Description: Corrected by Erratum in Monthly Notices of the Royal Astronomical Society, 2014; 441(4):3640-3642 (DOI: 10.1093/mnras/stu826)
Rights: © 2014 The Authors
DOI: 10.1093/mnras/stu139
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