11-13 November 2019
The University of Tokyo, Kashiwa Campus
Asia/Tokyo timezone

Varieties of DM density profile in Galactic dwarf spheroidal galaxies and the gamma-ray search of the annihilation signature

12 Nov 2019, 14:30
The University of Tokyo, Kashiwa Campus

The University of Tokyo, Kashiwa Campus

Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba, Japan
Invited talk DM Astrophysics


Dr Nagisa Hiroshima (Riken)


Dwarf spheroidal galaxies (dSph) are good targets to search for dark matter annihilation signals through gamma-ray observations. Currently, the most strong constraints on the cross-section at mDM<~100GeV are obtained by observing them with Fermi-LAT. The dark matter distribution in dSphs is difficult to model and the errors in the current constraints are dominated by those in the J-factor. In this talk, I explain the general procedure to determine the DM distribution in dSphs and the variation of the resultant models. I also discuss the effect of the DM spatial distribution on the future gamma-ray search of WIMP annihilation signals using ground-based telescopes.



Primary author

Dr Nagisa Hiroshima (Riken)

Presentation Materials