Search for new supernova remnant shells in the Galactic Plane with H.E.S.S.

It has been a long-standing question whether supernova remnants (SNRs) can account for the acceleration of the bulk of galactic cosmic rays up to the knee in the cosmic ray spectrum. TeV-selected SNRs are interesting sources to probe this hypothesis and the entire H.E.S.S. phase I data set of the Galactic Plane, collected over the past decade, constitutes a unique archive to scan. The idea of the presented work is to systematically search for new SNR candidates in the sky maps produced for the latest H.E.S.S. Galactic Plane Survey (HGPS), on the basis of their morphological shell-like appearance in the TeV band.