Polarization distribution in the image of a synchrotron emitting ring around a regular black hole

The polarized images of a synchrotron emitting ring are studied in the regular Hayward and Bardeen black hole spacetimes. These holes carry magnetic field terms gravity coupled to nonlinear electrodynamics. Results show that main features polarization rings similar these two As charge parameter increase, intensity electric vector position angle image plane increase Moreover, spacetime closer those Schwarzschild case. effects on Strokes $Q-U$ loops also slightly smaller spacetime. This information stored around could help understand