TL;DR
This paper presents indirect evidence supporting 30-40 GeV dark matter particles annihilating into b quarks, which could explain gamma-ray excess, plasma heating, and high gamma-ray luminosity near the Galactic Centre.
Contribution
It demonstrates that a dark matter annihilation model consistent with gamma-ray data also explains plasma heating and gamma-ray luminosity, linking multiple astrophysical phenomena.
Findings
Gamma-ray excess fits 30-40 GeV dark matter annihilation model.
Annihilation cross section aligns with Fermi-LAT predictions.
Model explains plasma heating and gamma-ray luminosity anomalies.
Abstract
Recently, an excess of GeV gamma ray near the Galactic Centre has beenvreported. The spectrum obtained can be best fitted with the annihilationvof GeV dark matter particles through 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.
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