Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/112084
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dc.contributor.author | H.E.S.S. Collaboration, | - |
dc.contributor.author | Abdalla, H. | - |
dc.contributor.author | Abramowski, A. | - |
dc.contributor.author | Aharonian, F. | - |
dc.contributor.author | Benkhali, F. | - |
dc.contributor.author | Akhperjanian, A. | - |
dc.contributor.author | Andersson, T. | - |
dc.contributor.author | Angüner, E. | - |
dc.contributor.author | Arrieta, M. | - |
dc.contributor.author | Aubert, P. | - |
dc.contributor.author | Backes, M. | - |
dc.contributor.author | Balzer, A. | - |
dc.contributor.author | Barnard, M. | - |
dc.contributor.author | Becherini, Y. | - |
dc.contributor.author | Tjus, J. | - |
dc.contributor.author | Berge, D. | - |
dc.contributor.author | Bernhard, S. | - |
dc.contributor.author | Bernlöhr, K. | - |
dc.contributor.author | Blackwell, R. | - |
dc.contributor.author | Böttcher, M. | - |
dc.contributor.author | et al. | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Astronomy and Astrophysics: a European journal, 2018; 612:A5-1-A5-10 | - |
dc.identifier.issn | 0004-6361 | - |
dc.identifier.issn | 1432-0746 | - |
dc.identifier.uri | http://hdl.handle.net/2440/112084 | - |
dc.description.abstract | The supernova remnant (SNR) W49B originated from a core-collapse supernova that occurred between one and four thousand years ago, and subsequently evolved into a mixed-morphology remnant, which is interacting with molecular clouds (MC). Gamma-ray observations of SNR-MC associations are a powerful tool to constrain the origin of Galactic cosmic rays, as they can probe the acceleration of hadrons through their interaction with the surrounding medium and subsequent emission of non-thermal photons. We report the detection of a γ-ray source coincident with W49B at very high energies (VHE; E > 100 GeV) with the H.E.S.S. Cherenkov telescopes together with a study of the source with five years of Fermi-LAT high-energy γ-ray (0.06–300 GeV) data. The smoothly connected, combined source spectrum, measured from 60 MeV to multi-TeV energies, shows two significant spectral breaks at 304 ± 20 MeV and 8.4−2.5+2.2 GeV; the latter is constrained by the joint fit from the two instruments. The detected spectral features are similar to those observed in several other SNR-MC associations and are found to be indicative of γ-ray emission produced through neutral-pion decay. | - |
dc.description.statementofresponsibility | H.E.S.S. Collaboration: H. Abdalla … R. Blackwell … P. DeWilt … J. Hawkes … J. Lau … N. Maxted … G. Rowell … F. Voisin … et al. | - |
dc.language.iso | en | - |
dc.publisher | EDP Sciences | - |
dc.rights | © ESO 2018 | - |
dc.source.uri | http://dx.doi.org/10.1051/0004-6361/201527843 | - |
dc.subject | Gamma rays: general; ISM: supernova remnants; ISM: clouds | - |
dc.title | The supernova remnant W49B as seen with H.E.S.S. and Fermi-LAT | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1051/0004-6361/201527843 | - |
dc.relation.grant | ARC | - |
pubs.publication-status | Published | - |
Appears in Collections: | Aurora harvest 3 IPAS publications Physics publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_112084.pdf | Published version | 1.26 MB | Adobe PDF | View/Open |
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