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Dark Matter in $\gamma$ lines: Galactic Center vs dwarf galaxies · Around

2016

Dark Matter in $\gamma$ lines: Galactic Center vs dwarf galaxies

Lefranc, Valentin, Moulin, Emmanuel, Panci, Paolo et al.

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We provide CTA sensitivities to Dark Matter (DM) annihilation in $\gamma$-ray lines, from the observation of the Galactic Center (GC) as well as, for the first time, of dwarf Spheroidal galaxies (dSphs).

We compare the GC reach with that of dSphs as a function of a putative core radius of the DM distribution, which is itself poorly known.
We find that the currently best dSph candidates constitute a more promising target than the GC, for core radii of one to a few kpc.
We use the most recent instrument response functions and background estimations by CTA, on top of which we add the diffuse photon component.

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