Model-independent constraints on dark matter annihilation in dwarf spheroidal galaxies

TL;DR

This paper develops a universal method to set bounds on dark matter annihilation signals in dwarf galaxies, using gamma-ray data, applicable across various dark matter models and assumptions.

Contribution

It introduces a model-independent formalism for constraining photon production from dark matter annihilation in dwarf galaxies, enabling broad applicability.

Findings

Derived bounds on dark matter annihilation from Fermi-LAT data

Analyzed nonstandard dark matter models in dwarf galaxies

Demonstrated the formalism's applicability to diverse scenarios

Abstract

We present a general, model-independent formalism for determining bounds on the production of photons in dwarf spheroidal galaxies via dark matter annihilation, applicable to any set of assumptions about dark matter particle physics or astrophysics. As an illustration, we analyze gamma-ray data from the Fermi Large Area Telescope to constrain a variety of nonstandard dark matter models, several of which have not previously been studied in the context of dwarf galaxy searches.