Extended Data Fig. 2: Characterisation of the magnetic field orientation and polarization fraction.
From: Polarized thermal emission from dust in a galaxy at redshift 2.6

The B field orientation (white lines) at 5 degrees (a), 10 degrees (b), 45 degrees (c), and 90 degrees (d) are shown over the source plane (a), lens model (e), and synthetic observations (f). We indicate the caustics in the source plane (green line), and image plane (yellow line). The median and r.m.s. of the polarization fraction and B field orientation are shown at the top right of each panel. The red ellipse indicates the synthetic beam of the simulated observations.