H.E.S.S. limits on line-like dark matter signatures in the 100 GeV to 2 TeV energy range close to the Galactic Centre

Understand

A search for dark matter line-like signals was performed in the vicinity of the Galactic Centre by the H.E.S.S.

• experiment on observational data taken in 2014.
• An unbinned likelihood analysis was developed to improve the sensitivity to line-like signals.
• The upgraded analysis along with newer data extend the energy coverage of the previous measurement down to 100 GeV.