Formation of the arc-shaped magnetic field morphology in the Perseus cloud. The large light blue circles depict the Per-Tau bubble (created by recurrent supernovae, represented by the star sign). The small dark blue circles depict an end-on view of the Perseus filamentary molecular cloud. Top panel: straight B on the left shows the direction of the initial magnetic field before the expansion of the Per-Tau bubble into the region. The curved B line on the right illustrates the large-scale mild bending of the magnetic field morphology after the expansion. Lower panel: formation of the arc-shaped magnetic field morphology around the Perseus molecular cloud due to interaction with the Per2 bubble, as described in the SCI model. The blue B lines show the field lines before and after interaction with the Per2 structure on the left and right, respectively.