PPPC 4 DM secondary: A Poor Particle Physicist Cookbook for secondary radiation from Dark Matter

TL;DR

This paper provides particle physicists with enhanced recipes to predict secondary radiation signals from dark matter annihilation or decay, including radio and gamma-ray emissions, considering various galactic conditions.

Contribution

It introduces new calculations for secondary emissions from dark matter, incorporating diverse magnetic fields, propagation scenarios, and an improved energy loss model for electrons and positrons.

Findings

Computed radio signals from synchrotron emission under different magnetic fields.

Calculated gamma-ray bremsstrahlung emissions with updated interstellar radiation fields.

Provided a comprehensive set of tools for dark matter indirect detection analyses.

Abstract

We enlarge the set of recipes and ingredients at disposal of any poor particle physicist eager to cook up signatures from weak-scale Dark Matter models by computing two secondary emissions due to DM particles annihilating or decaying in the galactic halo, namely the radio signals from synchrotron emission and the gamma rays from bremsstrahlung. We consider several magnetic field configurations and propagation scenarios for electrons and positrons. We also provide an improved energy loss function for electrons and positrons in the Galaxy, including synchrotron losses in the different configurations, bremsstrahlung losses, ionization losses and Inverse Compton losses with an updated InterStellar Radiation Field.