Map showing the intensity of ¹²CO(1–0) integrated over the OMC A cloud, which is bounded by OMC-3 in the north and OMC-4 in the south (left). The focus region in this study is indicated by the black box. Thermal dust polarisation was observed at a wavelength of 54 µm using SOFIA/HAWC+ (right). The background colour represents the total continuum intensity (Stokes-I). The blue segments indicate the orientation of the polarisation (E-vectors), with their length indicating the degree of polarisation. The black contour lines outline the Orion BN/KL, HII, and Bar. The red asterisk marks the location of the Orion BN/KL core. The CO data were obtained from the CARMA-NRO Orion Survey (Kong et al. 2018).