  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).
