Sommerfeld Enhancement and Galactic Center GeV Excess
Published:Dec 30, 2025 12:45
•1 min read
•ArXiv
Analysis
This paper investigates how background forces, arising from the presence of a finite density of background particles, can significantly enhance dark matter annihilation. It proposes a two-component dark matter model to explain the gamma-ray excess observed in the Galactic Center, demonstrating the importance of considering background effects in astrophysical environments. The study's significance lies in its potential to broaden the parameter space for dark matter models that can explain observed phenomena.
Key Takeaways
- •Background-induced forces can significantly enhance dark matter annihilation.
- •A two-component dark matter model is proposed to explain the Galactic Center GeV excess.
- •The model incorporates a fermionic particle and an ultralight pseudoscalar particle.
- •The study highlights the importance of background effects in astrophysical environments.
Reference
“The paper shows that a viable region of parameter space in this model can account for the gamma-ray excess observed in the Galactic Center using Fermi-LAT data.”