Astroparticle Physics - A Joint TeVPA/ IDM Conference

Jun 23 – 28, 2014
Amsterdam
Europe/Zurich timezone

Systematic uncertainties in dark matter searches due to halo asphericity

Jun 23, 2014, 6:15 PM
15m
Room 6 (Tuschinski Theatre)

Room 6

Tuschinski Theatre

Presentation Dark Matter Indirect Detection

Nicolas Bernal

Description

We study the impact of aspherical dark matter density distribution in Milky-Way like halo on direct and indirect searches. Using data from large N-body cosmological simulation Bolshoi, we perform a complete statistical analysis and quantify the systematic uncertainties that affect the determination of local dark matter density and $J$ factors for annihilating and decaying dark matter. We find that the systematic effects can be as large as 50% at 95% CL for a spherically averaged local density of 0.3 GeV/cm^3. Similarly, systematic uncertainties for $J$ factors evaluated around the galactic center can be as large as 20% and 15% at 95% CL for decaying and annihilating dark matter, for typical NFW profiles.

 Slides