Dark matter is now known to be the vital ingredient for the growth of
structure in the Universe, while its nature remains a mystery.
The dwarf spheroidal galaxies (dSphs) are excellent laboratories to
study the nature of dark matter as they are largely dark-matter
dominated systems. In particular, revealing their dark matter distributions
is of importance in testing dark matter models.
In this work, we estimate the dark matter distributions in the eight luminous
dwarf satellites through our dynamical analysis of their stellar-kinematic data.
Then we find the diversity of the inner slopes in their dark matter halos.
Interestingly, this diversity can be explained if we consider the impact of baryonic
feedback on the central dark matter densities predicted by recent dark matter and
hydrodynamical simulations.
In this talk, I will introduce our constructed mass models and show the inferred
dark matter density profiles in the dSphs.
Then, I will discuss the feasibility and future prospects for this dark matter study
with Subaru-PFS survey.
