Dust polarization semi-vectors (rotated by 90° to showthe inferred magnetic field orientation) over the continuum emission at 1.3 mm for pointings 1, 2, and 3 toward W43-MM1. Continuum contours levels are at 3, 5, 10, 50, and 100 σI (σI levels in Table 1). The semi vectors in red and blue show the magnetic field orientation where the polarized intensity exceeds a noise level of 3σP and 5σP, respectively(see Table 1). The semi-vectors are plotted every three pixels, which correspond to a Nyquist spatial frequency of four vectors per synthesized beam (two in each dimension). The red and blue cones represent the red-shifted and blue-shifted outflow lobes, respectively. Dashes gray circles represent one third of the ~24′′ primary beam, within which we performed the analysis. The solid green ellipse shows the synthesized beam of 0.55′′ × 0.49′′, PA = −79.4°.
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