Relativistic dark matter at the Galactic center

Abstract

In a large region of the supersymmetry parameter space, the annihilation cross section for neutralino dark matter is strongly dependent on the relative velocity of the incoming particles. We explore the consequences of this velocity dependence in the context of indirect detection of dark matter from the galactic center. We find that the increase in the annihilation cross section at high velocities leads to a flattening of the halo density profile near the galactic center and an enhancement of the annihilation signal.

13 pages, 9 figures

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Cited by in corpus (11)

• The Galactic Center Massive Black Hole and Nuclear Star Cluster
• Dark matter annihilation effects on the first stars
• A black hole window into p-wave dark matter annihilation
• Search for gamma-ray emission from $p$-wave dark matter annihilation in the Galactic Center
• New gamma ray signal from gravitationally boosted neutralinos at the galactic center
• Black Holes, Dark Matter Spikes, and Constraints on Simplified Models with $t$-Channel Mediators
• Gamma rays from Dark Matter Annihilation in the Central Region of the Galaxy
• Faint Dark Matter Annihilation Signals and the Milky Way's Supermassive Black Hole
• Searching for velocity-dependent dark matter annihilation signals from extragalactic halos
• Dark Matter Annihilation via Breit-Wigner Enhancement with Heavier Mediator
• Optimal observing strategies for velocity-suppressed dark matter annihilation