Observed Properties of Dark Matter on Small Spatial Scales
Rosemary F.G. Wyse, Gerard Gilmore
TL;DR
This paper reviews recent observational findings on dark matter properties in small galaxies, highlighting the importance of dwarf spheroidal galaxies in understanding dark matter distribution and galaxy evolution.
Contribution
It summarizes recent observational results on dark matter in low-luminosity galaxies, emphasizing the role of dwarf spheroidals in dark matter research.
Findings
Dwarf spheroidal galaxies are highly dark-matter dominated.
Large datasets enable systematic analysis of dark matter haloes.
Observations inform models of galaxy evolution and dark matter properties.
Abstract
The nature of dark matter is one of the outstanding questions of astrophysics. The internal motions of member stars reveal that the lowest luminosity galaxies in the Local Group are the most dark-matter dominated. New large datasets allow one to go further, and determine systematic properties of their dark matter haloes. We summarise recent results, emphasising the critical role of the dwarf spheroidal galaxies in understanding both dark matter and baryonic processes that shape galaxy evolution.
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