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arXiv · 1901.07978

The quest for dark matter in dwarf spheroidal galaxies with the Cherenkov Telescope Array

Francesco Gabriele Saturni·Gonzalo Rodríguez-Fernández·Aldo Morselli
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Abstract

Dwarf spheroidal galaxies are among the best environments that can be studied with Cherenkov telescopes for indirect searches of $\gamma$-ray signals coming from dark matter self-interaction (annihilation or decay), due to their proximity and negligible background emission. We present new determinations of the dark-matter amount - i.e. the astrophysical factors $J$ and $D$ - in dwarf-galaxy halos obtained through the MCMC Jeans analysis of their brightness and kinematic data. Such factors are of great importance to test the performances of the next-generation $\gamma$-ray instruments such as the Cherenkov Telescope Array in detecting dark-matter signals from astronomical environments, or constraining the limits to dark-matter physics parameters (particle mass and lifetime, annihilation cross section).

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Francesco Gabriele Saturni, Gonzalo Rodríguez-Fernández, Aldo Morselli. 2019-01-23. The quest for dark matter in dwarf spheroidal galaxies with the Cherenkov Telescope Array. https://doi.org/10.1051/epjconf/201920901024

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