Orion A’s complete 3D magnetic field morphology

Magnetic fields permeate the interstellar medium and are important in star formation process. Determining 3D magnetic of molecular clouds will allow us to better understand their role evolution these stars. We fully reconstruct approximate three-dimensional (3D) field morphology Orion A cloud (on scales a few ~100 pc) using Galactic models, as well present line-of-sight plane-of-sky observations. While previous studies identified an arc shape, this study we provide orientation arc-shaped its direction, for first time. find that is tilted, semi-convex (from our point view) structure mostly points direction decreasing latitude longitude on plane sky, from vantage point. The previously bubbles events region were key shaping morphology.