Please use this identifier to cite or link to this item:
Scopus Web of Science® Altmetric
Type: Journal article
Title: Population study of Galactic supernova remnants at very high γ-ray energies with H.E.S.S.
Other Titles: Population study of Galactic supernova remnants at very high gamma-ray energies with H.E.S.S.
Author: Abdalla, H.
Abramowski, A.
Aharonian, F.
Ait Benkhali, F.
Angüner, E.
Arakawa, M.
Arrieta, M.
Aubert, P.
Backes, M.
Balzer, A.
Barnard, M.
Becherini, Y.
Becker Tjus, J.
Berge, D.
Bernhard, S.
Bernlöhr, K.
Blackwell, R.
Böttcher, M.
Boisson, C.
Bolmont, J.
et al.
Citation: Astronomy and Astrophysics: a European journal, 2018; 612:A3-1-A3-18
Publisher: EDP Sciences
Issue Date: 2018
ISSN: 0004-6361
Statement of
H. Abdalla … R. Blackwell … P. de Wilt … J. Hawkes … J. Lau … N. Maxted … G. Rowell … F. Voisin … et al. [The H.E.S.S. Collaboration]
Abstract: Shell-type supernova remnants (SNRs) are considered prime candidates for the acceleration of Galactic cosmic rays (CRs) up to the knee of the CR spectrum at E ≈ 3 × 10¹⁵ eV. Our Milky Way galaxy hosts more than 350 SNRs discovered at radio wavelengths and at high energies, of which 220 fall into the H.E.S.S. Galactic Plane Survey (HGPS) region. Of those, only 50 SNRs are coincident with a H.E.S.S source and in 8 cases the very high-energy (VHE) emission is firmly identified as an SNR. The H.E.S.S. GPS provides us with a legacy for SNR population study in VHE γ-rays and we use this rich data set to extract VHE flux upper limits from all undetected SNRs. Overall, the derived flux upper limits are not in contradiction with the canonical CR paradigm. Assuming this paradigm holds true, we can constrain typical ambient density values around shell-type SNRs to n ≤ 7 cm⁻³ and electron-to-proton energy fractions above 10 TeV to ϵep ≤ 5 × 10⁻³. Furthermore, comparisons of VHE with radio luminosities in non-interacting SNRs reveal a behaviour that is in agreement with the theory of magnetic field amplification at shell-type SNRs.
Keywords: gamma rays: general; ISM: supernova remnants
Rights: © ESO 2018
DOI: 10.1051/0004-6361/201732125
Grant ID: ARC
Appears in Collections:Aurora harvest 3
IPAS publications
Physics publications

Files in This Item:
File Description SizeFormat 
hdl_112109.pdfPublished version3.55 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.