11 papers
Testing warm dark matter with kinematics of the smallest galaxies
M. Sten Delos, Niusha Ahvazi, Andrew Benson
Every dark matter halo forms with a density cusp at its center. For warm dark matter (WDM), these prompt cusps can be massive enough to influence the kinematic…
Growth of Structure in Multi-species Wave Dark Matter
Mustafa A. Amin, M. Sten Delos
We explore the growth of structure in multi-species wave (and particle) dark matter. We derive the evolution of the power spectrum of total density contrasts for an arbitrary numbe…
The pre-infall bias of subhalos
M. Sten Delos, Andrew Benson
Dark matter halos destined to fall into a more massive host differ from typical field halos of the same mass even before infall. In cosmological simulations, we find that the proge…
Multi-species Dark Matter with Warmth and Randomness
Mustafa A. Amin, M. Sten Delos, Kaixin Yang
We present a general analytic framework for the evolution of cosmic structure in multi-species dark matter models that simultaneously incorporates finite velocity dispersion and Po…
Warm, not Fuzzy: Generalized Ultralight Dark Matter Limits from Milky Way Satellites
Ethan O. Nadler, Mustafa A. Amin, Risa H. Wechsler +3
We generalize lower limits on the dark matter (DM) particle mass derived from Milky Way (MW) satellite galaxy abundances to scenarios in which DM is an ultralight scalar field…
Role of prompt cusps in driving the core collapse of SIDM halos
Vinh Tran, Daniel Gilman, M. Sten Delos +4
Prompt cusps (PCs) form from the direct collapse of overdensities in the early Universe, reside at the center of every dark matter halo, and have density profiles steeper than $r^{…