Context. Cosmic rays (CRs) can be studied through the galaxy-wide gamma-ray emission that they generate when propagating in the interstellar medium. The comparison of the diffuse signals from different systems may inform us about the key parameters in CR acceleration and transport. Aims. We aim to determine and compare the properties of the cosmic-ray-induced gamma-ray emission of several Local Group galaxies. Methods. We use 2 years of nearly continuous sky-survey observations obtained with the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope to search for gamma-ray emission from M31 and M33. We compare the results with those for the Large Magellanic Cloud, the Small Magellanic Cloud, the Milky Way, and the starburst galaxie...
Context. Cosmic rays (CRs) can be studied through the galaxy-wide gamma-ray emission that they gener...
Context. Cosmic rays (CRs) can be studied through the galaxy-wide gamma-ray emission that they gener...
The Fermi Large Area Telescope (LAT) has opened the way for comparative studies of cosmic rays (CRs)...
Cosmic rays (CRs) can be studied through the galaxy-wide gamma-ray emission that they generate when ...
Context. Cosmic rays (CRs) can be studied through the galaxy-wide gamma-ray emission that they gener...
Context. Cosmic rays (CRs) can be studied through the galaxy-wide gamma-ray emission that they gener...
The Fermi Large Area Telescope (LAT) has opened the way for comparative studies of cosmic rays (CRs)...
Cosmic rays (CRs) can be studied through the galaxy-wide gamma-ray emission that they generate when ...
Context. Cosmic rays (CRs) can be studied through the galaxy-wide gamma-ray emission that they gener...
Context. Cosmic rays (CRs) can be studied through the galaxy-wide gamma-ray emission that they gener...
The Fermi Large Area Telescope (LAT) has opened the way for comparative studies of cosmic rays (CRs)...