Speaker
Mr
Matthieu Kieffer
(LPNHE Paris)
Description
Weakly Interacting Massive Particles (WIMPs) are currently one of the most popular hypotheses to answer the question of the nature of Dark Matter. Gamma-ray line signatures from self-annihilation of WIMPs can be detected at very-high energies by the H.E.S.S. imaging air Cherenkov telescope in observations of the Galactic Center (GC) region. In 2012, phase II of H.E.S.S. started with the addition of a 28 m Cherenkov telescope, lowering significantly the energy threshold and giving the possibility to cross-check recent claims of line-like features in Fermi/LAT data. In this contribution, results on line-like feature searches using a 112 h exposure of the GC obtained with the higher threshold phase I of H.E.S.S. will be reviewed, and analysis procedures and sensitivity estimates for line searches with H.E.S.S. phase II will be discussed.
Author
Mr
Matthieu Kieffer
(LPNHE Paris)
