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Interstellar gamma-ray emission from cosmic rays in star-forming galaxies

Interstellar gamma-ray emission from cosmic rays in star-forming galaxies

Fermi/LAT observations of star-forming galaxies in the ~0.1-100GeV range have made possible a first population study. Evidence was found for a correlation between gamma-ray luminosity and tracers of the star formation activity. Studying galactic cosmic rays (CRs) in various global conditions can yield information about their origin and transport in …