Top: combined polarization map with magnetic field vectors overlaid, centred on showing several polarized arches south of the plane. Bright compact features along the plane are all SNRs: DA 530 (G93.3+6.9); HB 21 (G89.2+4.7); W 63 (G82.2+5.3); CTB 87 (G74.9+1.2); the Cygnus Loop (G74.0−8.5); CTB 80 (G69.0+2.7); and W 51C (G49.1−0.6). The large spur at l ≈ 50° is the SPS. Bottom: dust polarization in the same region as seen at 353 GHz. Maps are rectangular projections and have an asinh colour scale.
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