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. Radio and microwave constraints are complementary to those obtained with other indirect detection methods, especially for dark matter annihilating into leptonic channels.
@article{arxiv.1604.06267,
title = {Updated galactic radio constraints on Dark Matter},
author = {Marco Cirelli and Marco Taoso},
journal= {arXiv preprint arXiv:1604.06267},
year = {2025}
}
Comments
20 pages, 10 figures. v2: some small additions, matches journal version. v3: one specification added in the caption of fig. 4