CLUMPY: a code for gamma-ray signals from dark matter structures

TL;DR

CLUMPY is a publicly available code that enables semi-analytical calculation of gamma-ray fluxes from dark matter annihilation or decay, incorporating substructures and capable of generating skymaps and flux estimates for various astrophysical objects.

Contribution

The paper introduces CLUMPY, the first public code for calculating gamma-ray signals from dark matter structures, including substructures, with versatile modes for different astrophysical scenarios.

Findings

Enables calculation of gamma-ray flux from dark matter in the Galaxy.

Supports skymap generation and flux estimation for specific objects.

Plans to include extragalactic contributions and other tracers in future versions.

Abstract

We present the first public code for semi-analytical calculation of the gamma-ray flux astrophysical J-factor from dark matter annihilation/decay in the Galaxy, including dark matter substructures. The core of the code is the calculation of the line of sight integral of the dark matter density squared (for annihilations) or density (for decaying dark matter). The code can be used in three modes: i) to draw skymaps from the Galactic smooth component and/or the substructure contributions, ii) to calculate the flux from a specific halo (that is not the Galactic halo, e.g. dwarf spheroidal galaxies) or iii) to perform simple statistical operations from a list of allowed DM profiles for a given object. Extragalactic contributions and other tracers of DM annihilation (e.g. positrons, antiprotons) will be included in a second release.