Indirect evidence of GeV Dark Matter

Abstract

Recently, an excess of GeV gamma ray near the Galactic Centre has beenvreported. The spectrum obtained can be best fitted with the annihilationvof $30-40$ GeV dark matter particles through $b\bar{b}$ channel. In this letter, I show that this annihilation model can also solve the mysteries of heating source in x-ray plasma and the unexpected high gamma-ray luminosity. The cross section constrained by these observations give excellent agreements with both the predicted range by using Fermi-LAT data and the canonical thermal relic abundance cross section.

Accepted by MNRAS Letters

References in corpus (6)

• A Tale of Tails: Dark Matter Interpretations of the Fermi GeV Excess in Light of Background Model Systematics
• Multi-wavelength signals of dark matter annihilations at the Galactic center
• The Galactic Center Excess from the Bottom Up
• Annihilation Emission from the Galactic Black Hole
• Radio constraints on dark matter annihilation in the galactic halo and its substructures
• The positron density in the intergalactic medium and the galactic 511 keV line

Cited by in corpus (1)

• Does the gamma-ray signal from the central Milky Way indicate Sommerfeld enhancement of dark matter annihilation?