# On the possible enhancement of the dark matter density distribution at the galactic center

## TL;DR

This paper explores how a dark matter density spike near the galactic center, caused by black hole growth, could explain gamma-ray signals observed by HESS, suggesting a potential dark matter signature.

## Contribution

It investigates the impact of a dark matter spike on gamma-ray signals, linking black hole growth to observable dark matter density enhancements.

## Key findings

- Dark matter spike extension matches HESS angular resolution
- Spike could account for gamma-ray spectral cut-off
- Supports dark matter interpretation of HESS signals

## Abstract

The dark matter spike induced by the adiabatic growth of a massive black hole in a cuspy environment, may explain the thermal dark matter density required to fit the cut-off in the HESSJ1745-290 gamma-ray spectra as TeV dark matter signal with a background component. The spike extension appears comparable with the HESS angular resolution.