Constraining dark matter signal from a combined analysis of Milky Way satellites using the Fermi-LAT

TL;DR

This paper presents a combined analysis of multiple dwarf spheroidal galaxies using Fermi-LAT data to improve constraints on gamma-ray signals from annihilating dark matter, enhancing detection sensitivity.

Contribution

It introduces a combined analysis method that leverages multiple targets to tighten dark matter annihilation constraints from gamma-ray observations.

Findings

Stronger constraints on dark matter annihilation signals.

Demonstration of improved sensitivity over individual analyses.

Validation of combined analysis approach.

Abstract

The Fermi LAT collaboration has recently presented constraints on the gamma-ray signal from annihilating dark matter using separate analyses of a number of dwarf spheroidal galaxies. Since the expected annihilation signal has the same physical properties regardless of the target (except for a normalization scale), it is possible to enhance the constraining power using a combined analysis, the initial results of which will be presented here.