Interpreting the Relation between the Gamma-Ray and Infrared Luminosities of Star-forming Galaxies
Interpreting the Relation between the Gamma-Ray and Infrared Luminosities of Star-forming Galaxies
It has been found that there is a quasi-linear scaling relationship between the gamma-ray luminosity in GeV energies and the total infrared luminosity of star-forming galaxies, i.e. $L_{\gamma}\propto L_{\rm IR}^{\alpha}$ with $\alpha\simeq 1$. However, the origin of this linear slope is not well understood. Although extreme starburst galaxies can be …