Updated galactic radio constraints on Dark Matter

Understand

We perform a detailed analysis of the synchrotron signals produced by Dark Matter annihilations and decays.

• We consider different set-ups for the propagation of electrons and positrons, the galactic magnetic field and Dark Matter properties.
• We then confront these signals with radio and microwave maps, including Planck measurements, from a frequency of 22 MHz up to 70 GHz.
• We derive two sets of constraints: conservative and progressive, the latter based on a modeling of the astrophysical emission.