论文标题
Orion A的完整3D磁场形态
Orion A's complete 3D magnetic field morphology
论文作者
论文摘要
磁场渗透到星际培养基中，在恒星形成过程中很重要。确定分子云的3D磁场将使我们能够更好地理解它们在这些云的演变中的作用和恒星的形成。我们使用银河磁场模型以及当前的偏远和平面磁场观测值完全重建了Orion A分子云的近似三维（3D）磁场形态。虽然先前的研究确定了Orion的3D磁场形态为云形状，但在这项研究中，我们首次提供了该弧形磁场及其天际飞机方向的方向。我们发现，这个3D场是一个倾斜的半凸（从我们的角度）结构，主要是从我们的有利位置降低天空平面上纬度和经度的方向。该区域中先前确定的气泡和事件是塑造这种弧形磁场形态的关键。
Magnetic fields permeate the interstellar medium and are important in the star formation process. Determining the 3D magnetic fields of molecular clouds will allow us to better understand their role in the evolution of these clouds and formation of stars. We fully reconstruct the approximate three-dimensional (3D) magnetic field morphology of the Orion A molecular cloud (on scales of a few to ~100 pc) using Galactic magnetic field models, as well as present line-of-sight and plane-of-sky magnetic field observations. While previous studies identified the 3D magnetic field morphology of the Orion A cloud as an arc shape, in this study we provide the orientation of this arc-shaped field and its plane-of-sky direction, for the first time. We find that this 3D field is a tilted, semi-convex (from our point of view) structure and mostly points in the direction of decreasing latitude and longitude on the plane of the sky, from our vantage point. The previously identified bubbles and events in this region were key in shaping this arc-shaped magnetic field morphology.
