Science with the New Generation of High Energy Gamma-Ray Experiments #6

Session

GRB, esotic and future 3

10 Oct 2008, 17:00

Padova

18. Acceleration of UHE Protons at Cluster Accretion Shocks and Related Non-thermal Emission

Giulia Vannoni (Max-Planck-Institut für Kernphysik, Heidelberg)

10/10/2008, 17:00

Clusters of galaxies are believed to be able to accelerate Cosmic Rays to ultrahigh energies (~10^18 eV and beyond) at accretion shocks. At this energies, the energy losses induced by the interaction with the CMB radiation become effective and determine the maximum energy of protons and the shape of the cutoff in the proton energy spectrum. In particular, the dominant energy loss channel...

17. On the level of the cosmic ray sea flux.

Dr Sabrina Casanova (Max Planck fuer Kernphysik)

10/10/2008, 17:20

The bulk of cosmic rays (CRs) which we measure within the Solar System is believed to be representative of the sea CRs everywhere in the Galaxy . However, the local CR flux might be due to one or few local sources . Here we investigate the possibility of measuring the level of Galactic sea CRs by combining the high spatial resolution gamma ray maps, becoming available now from state of...