Speaker
Prof.
Jens Niemeyer
(Goettingen University)
Description
Ultra-light axions (ULAs) are dark matter candidates which
suppress the growth of perturbations on scales below their
de Broglie wavelength and predict solitonic halo cores owing
to their "quantum pressure" support. They therefore give
rise to new phenomenology in large-scale structure formation
and galaxy evolution. The nonlinear, non-relativistic
dynamics of ULA halos can be numerically modeled by solving
the Schroedinger-Poisson equations or, equivalently, the
fluid equations with an additional quantum pressure term.
Several approaches to simulate structure formation with ULA
dark matter, both directly and semi-analytically, as well as
a new stochastic model for the core-halo mass relation will
be presented.
Primary author
Prof.
Jens Niemeyer
(Goettingen University)
