Rotation curves of rotating Galactic Bose-Einstein condensate dark matter halos

Abstract

We present the dynamics of rotating Bose condensate Galactic dark matter halos, made of an ultralight spinless boson. We restrict to the case of adding axisymmetric rigid rotation to initially spherically symmetric structures and show there are three regimes: (i) small angular momentum, which basically retains the drawbacks of spherically symmetric halos related to compactness and failure at explaining Galactic rotation curves; (ii) an intermediate range of values of angular momentum that allow the existence of long-lived structures with acceptable rotation curve profiles; and (iii) high angular momentum, in which the structure is dispersed away by rotation. We also present in detail the new code used to solve the Gross--Pitaevskii Poisson system of equations in three dimensions.