Speaker
Description
We examine the degree of spatial coherence of the field configuration in fuzzy dark matter halos. The compact soliton sitting at the centre of a halo is completely coherent and is surrounded by an incoherent field whose density follows the Navarro-Frenk-White profile and exhibits turbulent features. This spatial transition from coherence to incoherence can be well characterized by two parameters according to a generalized empirical core-halo profile, whose oscillations are found to be anti-correlated to the oscillation of the peak value of the power spectrum of the halo; their oscillation frequencies scale with the soliton core density. In contrast, the outer halo reaches a quasi-steady state with an approximately constant characteristic granule size correlated with the intervortex spacing.
We acknowledge funding from European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 897324 (upgradeFDM).
