8–12 Aug 2022
Alte Mensa
Europe/Berlin timezone

Detection of very small structures of dark matter with direct detection experiments

9 Aug 2022, 16:34
3m
Alte Mensa

Alte Mensa

Johann-Joachim-Becher-Weg 3, 55128 Mainz.

Speaker

Valentina Montoya (ITP, Heidelberg University)

Description

The study of the density profile of dark matter (DM) on small scales provides valuable information about the mass distribution within the Galaxy and can predict new compact objects.
We take the sensitivity projections of future direct detection experiments to predict the observation times needed to detect small DM overdensities, assuming a DM cross section close to the current limit of $\sigma_{SI} = 2 x 10^{-47}$ cm$^2$. We present DM power spectrum locally in numerical simulations using a simplistic description. We compare the density imprints of homogeneous DM with those of large overdensities. We then perform statistical tests to show that with a range of (50, 200) numbers of events and observation times of the order of ~ 5 years we can observe structures of size $10^9 h Mpc^{-1}$ with an overdensity of order $\rho/\rho_0 \sim 10$.

Primary authors

Prof. Joerg Jaeckel Valentina Montoya (ITP, Heidelberg University)

Presentation materials