Speaker
Matt Roth
(ANU)
Description
Here we present results from a recent study on the origins of the diffuse isotropic gamma-ray background. We tackle the problem using a bottom-up approach by considering cosmic ray diffusion in individual star-forming galaxies, using a single-zone model to obtain an energy dependent calorimetry fraction and associated conversion of cosmic ray energy to gamma-rays in the hadronic scenario. We apply this model to a sample from CANDELS to obtain an estimate for the DIGB. We further present some brief comments on neutrinos produced in SFGs and on non-thermal radio continuum emission and it's relation to the FIR-radio correlation.
Primary author
Matt Roth
(ANU)
