View of the CH₃OH maser features detected around G23.44−0.18 MM1 (left panel) and MM2 (right panel). The reference position is the estimated absolute position from Table 1. Triangles identify CH₃OH maser features whose side length is scaled logarithmically according to their peak flux density (Table A.1). Maser local standard of rest radial velocities are indicated by color (the assumed velocity of the region is , Bronfman et al. 1996). 0.3 Jy beam⁻¹ and 0.4 Jy beam⁻¹ symbols are plotted for comparison. The linear polarization vectors, scaled logarithmically according to the polarization fraction P_l ( and ; see Table A.1), are overplotted. In the bottom right corner the corresponding error-weighted orientation of the magnetic field (⟨Φ_B⟩, see Sect. 5.1) is also shown, the two dashed segments indicate the uncertainty. The two arrows in the right panel indicate the direction, but not the actual position, of the red- and blue-shifted lobes of the ¹²CO(2−1) outflow associated with G23.44−0.18 (MM2) (; Ren et al. 2011). The dashed and dash-dotted lines are the best least-squares linear fit of the western () and eastern () groups of CH₃OH maser features in G23.44+0.18 (MM2).