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HESS J1640-465-an exceptionally luminous TeV gamma-ray supernova remnant
University of Hamburg, Germany.
Max Planck Institute for Nuclear Physics, Germany ; Dublin Institute for Advanced Studies, Ireland ; National Academy of Sciences of the Republic of Armenia, Armenia.
Max Planck Institute for Nuclear Physics, Germany.
National Academy of Sciences of the Republic of Armenia, Armenia ; Yerevan Physics Institute, Armenia.
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2014 (English)In: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 439, no 3, p. 2828-2836Article in journal (Refereed) Published
Abstract [en]

The results of follow-up observations of the TeV gamma-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 Gamma = 2.11 +/- 0.09(stat) +/- 0.10(sys), and a cut-off energy of E-2 = 6.0(-1.2)(+2.0) 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 gamma-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 W(p)n(H) similar to 4 x 10(52)(d/10kpc)(2) erg cm(-3).

Place, publisher, year, edition, pages
2014. Vol. 439, no 3, p. 2828-2836
Keywords [en]
radiation mechanisms: non-thermal, ISM: individual objects: G338.3-0.0, ISM: supernova remnants
National Category
Astronomy, Astrophysics and Cosmology
Research subject
Physics, Astroparticle Physics
Identifiers
URN: urn:nbn:se:lnu:diva-34648DOI: 10.1093/mnras/stu139ISI: 000334114900046Scopus ID: 2-s2.0-84896446798OAI: oai:DiVA.org:lnu-34648DiVA, id: diva2:721569
Note

Correction published in: Monthly Notices of the Royal Astronomical Society 441(4): 3640-2

Available from: 2014-06-04 Created: 2014-06-04 Last updated: 2018-08-30Bibliographically approved

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Becherini, YvonnePunch, Michael

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