  Using Brownian dynamics (BD) simulations we investigate the self-organization
of a monolayer of chiral active particles with dipolar interactions. Each
particle is driven by both, translational and rotational self-propulsion, and
carries a permanent point dipole moment at its center. The direction of the
translational propulsion for each particle is chosen to be parallel to its
dipole moment. Simulations are performed at high dipolar coupling strength and
a density below that related to motility-induced phase separation in simple
active Brownian particles. Despite this restriction, we observe a wealth of
phenomena including formation of two types of vortices, phase separation, and
flocking transitions. To understand the appearance and disappearance of
vortices in the many-particle system, we further investigate the dynamics of
simple ring structures under the impact of self-propulsion.
