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Strong Constraints on Fuzzy Dark Matter from Ultrafaint Dwarf Galaxy Eridanus II
David J. E. Marsh, Jens C. Niemeyer
The fuzzy dark matter (FDM) model treats DM as a bosonic field with astrophysically large de Broglie wavelength. A striking feature of this model is fluctuations i…
Neutron star -- axion star collisions in the light of multi-messenger astronomy
Tim Dietrich, Francesca Day, Katy Clough +2
Axions are increasingly favoured as a candidate particle for the dark matter in galaxies, since they satisfy the observational requirements for cold dark matter and are theoretical…
Axion star collisions with black holes and neutron stars in full 3D numerical relativity
Katy Clough, Tim Dietrich, Jens C. Niemeyer
Axions are a potential dark matter candidate, which may condense and form self gravitating compact objects, called axion stars (ASs). In this work, we study for the first time head…
Formation and structure of ultralight bosonic dark matter halos
Jan Veltmaat, Jens C. Niemeyer, Bodo Schwabe
We simulate the formation and evolution of ultralight bosonic dark matter halos from cosmological initial conditions. Using zoom-in techniques we are able to resolve the detailed i…
On the difficulty of generating gravitational wave turbulence in the early universe
Katy Clough, Jens C. Niemeyer
A recent article by Galtier and Nazarenko [1] proposed that weakly nonlinear gravitational waves could result in a turbulent cascade, with energy flowing from high to low frequency…
Tidal disruption of fuzzy dark matter subhalo cores
Xiaolong Du, Bodo Schwabe, Jens C. Niemeyer +1
We study tidal stripping of fuzzy dark matter (FDM) subhalo cores using simulations of the Schrödinger-Poisson equations and analyze the dynamics of tidal disruption, highlighting…