A model-independent analysis of the Fermi Large Area Telescope gamma-ray data from the Milky Way dwarf galaxies and halo to constrain dark matter scenarios

Understand

We implemented a novel technique to perform the collective spectral analysis of sets of multiple gamma-ray point sources using the data collected by the Large Area Telescope onboard the Fermi satellite.

• The energy spectra of the sources are reconstructed starting from the photon counts and without assuming any spectral model for both the sources and the background.
• In case of faint sources, upper limits on their fluxes are evaluated with a Bayesian approach.
• This analysis technique is very useful when several sources with similar spectral features are studied, such as sources of gamma rays from annihilation of dark matter particles.