Accretion-Driven Squeezing of Fuzzy Dark Matter Halo Cores in the Schrödinger-Newton Framework
Chon-Fai Kam, Chi-Sheng Chen, En-Jui Kuo
Published: 2022/4/27
Abstract
We investigate the impact of accretion onto supermassive black holes on the density profiles of a fuzzy dark matter soliton core at the center of a dark matter halo. Treating the supermassive black hole at the center of a galaxy as a point mass, we numerically solve the Schr\"odinger-Newton equation for the scalar field. We find that the time-dependent perturbation has a significant squeezing effect on the soliton density profile, which both reduces the size of the core and increases the central density. This finding provides insights into how black hole growth influences fuzzy dark matter structures, potentially addressing discrepancies in galactic core observations.