# Ultra-light Dark Matter is Incompatible with the Milky Way's Dwarf Satellites.

@article{Safarzadeh2019UltralightDM,
title={Ultra-light Dark Matter is Incompatible with the Milky Way's Dwarf Satellites.},
journal={arXiv: Cosmology and Nongalactic Astrophysics},
year={2019}
}
• Published 2019
• Physics
• arXiv: Cosmology and Nongalactic Astrophysics
• The density profiles of dwarf galaxies are a highly varied set. If the dark matter is an Ultra-light particle such as axions, then simulations predict a distinctive and unique profile. If the axion mass is large enough to fit the ultra-faint dwarf (UFD) satellites($m\gtrapprox 10^{-21}$ eV), then the models do not fit the density profile of Fornax and Sculptor and are ruled out by more than $3-\sigma$ confidence. If the axion mass is in the mass range that can fit mass profiles of Fornax and… CONTINUE READING