Discovery of new TeV supernova remnant shells in the Galactic plane with HESS

Gottschall, D.; Capasso, M.; Deil, C.; Djannati-Atai, A.; Donath, A.; Eger, P.; Marandon, Vincent; Maxted, N.; Puehlhofer, G.; Renaud, Matthieu; Sasaki, M.; Terrier, R.; Vink, J.

doi:10.1063/1.4968934

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Discovery of new TeV supernova remnant shells in the Galactic plane with HESS

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Marandon, Vincent
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Renaud, Matthieu
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Citation

Gottschall, D., Capasso, M., Deil, C., Djannati-Atai, A., Donath, A., Eger, P., et al. (2017). Discovery of new TeV supernova remnant shells in the Galactic plane with HESS. AIP Conference Proceedings, 1792: 040030. doi:10.1063/1.4968934.

Cite as: https://hdl.handle.net/21.11116/0000-0000-BB1A-1

Abstract

Supernova remnants (SNRs) are prime candidates for efficient particle acceleration up to the knee in the cosmic ray particle spectrum. In this work we present a new method for a systematic search for new TeV-emitting SNR shells in 2864 hours of H.E.S.S. phase I data used for the H.E.S.S. Galactic Plane Survey. This new method, which correctly identifies the known shell morphologies of the TeV SNRs covered by the survey, HESS J1731-347, RX1713.7-3946, RCW86, and Vela Junior, reveals also the existence of three new SNR candidates. All three candidates were extensively studied regarding their morphological, spectral, and multi-wavelength (MWL) properties. HESS J1534-571 was associated with the radio SNR candidate G323.7-1.0, and thus is classified as an SNR. HESS J1912+101 and HESS J1614-518, on the other hand, do not have radio or X-ray counterparts that would permit to identify them firmly as SNRs, and therefore they remain SNR candidates, discovered first at TeV energies as such. Further MWL follow up observations are needed to confirm that these newly discovered SNR candidates are indeed SNRs.