3D magnetic-field morphology of the Perseus molecular cloud

Context. Despite recent observational and theoretical advances in mapping the magnetic fields associated with molecular clouds, their three-dimensional (3D) morphology remains unresolved. Multi-wavelength multi-scale observations will allow us to paint a comprehensive picture of these star-forming regions. Aims. We reconstructed 3D field Perseus cloud compared it predictions cloud-formation models. These models predict bending filamentary clouds. orientation direction this our magnetic-field view cloud. Methods. used previous line-of-sight plane-of-sky as well Galactic reconstruct complete vectors Results. approximated concave arc that points decreasing longitude plane sky (from point view). This preserves memory field. In order compare model predictions, we assume retains its most interaction. After incorporating velocity observations, find are consistent shock-cloud-interaction Conclusions. To knowledge, is first time have been reconstructed. be describes formation mechanism