33RD INTERNATIONAL COSMIC RAY CONFERENCE, RIO DE JANEIRO 2013 THE ASTROPARTICLE PHYSICS CONFERENCE A statistical study of Galactic SNR source spectra detected at>GeV energies

Abstract: Broadband modeling of 24 Galactic supernova remnants was performed using a model to test the SNRs for hadronically generated γ-rays by examining combined spectra of pi0-decay, bremsstrahlung, inverse Compton, and synchrotron radiation. For several years, measurements at super-GeV energies are performed by instruments like Fermi-LAT, H.E.S.S., MAGIC, VERITAS and Milagro and therefore, broadband SEDs exist for a growing number of SNRs. This is the first systematic statistical study of the resulting source spectra, which are reviewed individually to ascertain the origin of the gamma radiation. This allows for a combined examination to test the current models of particle acceleration in SNRs