The extragalactic γ-ray background: imprints from the physical properties and evolution of star-forming galaxy populations
The extragalactic γ-ray background: imprints from the physical properties and evolution of star-forming galaxy populations
Star-forming galaxies (SFGs) harbour an abundant reservoir of cosmic rays (CRs). At GeV energies, these CRs undergo interactions with their environment to produce $\gamma$-rays, and the unresolved $\gamma$-ray emission from populations of SFGs forms a component of the isotropic extragalactic $\gamma$-ray background (EGB). In this work, we investigate the contribution …