# Dark matter gets DAMPE at high energies

## TL;DR

This paper investigates whether local dark matter over-densities, like mini halos, can explain DAMPE's high-energy electron and positron excess, and assesses the detectability of such structures with gamma-ray and neutrino observatories.

## Contribution

It analyzes the potential of gamma-ray and neutrino telescopes to detect local dark matter over-densities that could explain DAMPE's spectral features.

## Key findings

- KM3NET can potentially rule out local over-densities near Earth.
- CTA can explore parameter space if the over-density is an Ultra-Compact Mini Halo.
- Detectability depends on the nature and proximity of dark matter structures.

## Abstract

The DArk Matter Particle Explorer (DAMPE) mission revealed a break in the spectrum of cosmic-ray electons and positrons. This is associated with an excess above the expected backgrounds at energies around 1 TeV. Several authors have argued that such an excess can be explained in terms of dark matter models that feature heavy leptophilic WIMPs. These models, however, require some form annihilation enchancement above that expected from the Milky-Way galactic centre. This can take the form of either a local over-density near to our solar system or some form of Sommerfeld enhancement of the annihilation rate. In this work we will explore the detectability of local over-densities using gamma-ray and neutrino observatories. We conclude that KM3NET may be the only up-coming high-energy instrument capable of ruling out the presence of such objects. However, in the case where the local over-density is an Ultra-Compact Mini Halo, CTA can also explore the parameter space of these proposed dark matter models.