Gamma-rays from nearby galaxies: from star formation to nuclear activity
We present our analysis and interpretation of gamma-ray data from the
normal galaxy M31, nearby starburst galaxies and the radio galaxy
Centaurus A. We estimated the expected gamma-ray luminosity due to
cosmic-rays produced by star formation and Supernova explosions, and
we compared it with observational results. While for M31 and the starburst
sample the measured upper limits are consistent with gamma-ray production
through star formation processes only, the Cen A emission is dominated
by an additional (AGN) component.
File translated from TEX by TTH, version 2.32.
On 16 Jul 1999, 09:19.