Constraining particle dark matter using local galaxy distribution

Understand

It has been long discussed that cosmic rays may contain signals of dark matter.

• In the last couple of years an anomaly of cosmic-ray positrons has drawn a lot of attentions, and recently an excess in cosmic-ray anti-proton has been reported by AMS-02 collaboration.
• Both excesses may indicate towards decaying or annihilating dark matter with a mass of around 1-10 TeV.
• In this article we study the gamma rays from dark matter and constraints from cross correlations with distribution of galaxies, particularly in a local volume.