分子云的超Alfvénic模型：塞曼分裂测量的预报
The Super-Alfvénic Model of Molecular Clouds: Predictions for Zeeman Splitting Measurements
摘要：
我们提出了合成OH塞曼分裂测量的超Alfvenic模型的分子云。我们选择致密的核心从合成13 CO地图计算的最大的模拟超音速和超阿尔芬湍流的日期。合成塞曼分裂测量的核心产生的磁场强度，B和柱密度，N之间的关系，在良好的协议与观测。在固定的N值下，B的大散射部分是由于核心与核心之间的磁场强度的固有变化。我们还计算了相对质量-通量比的核心和他们的信封，${\cal R}_μ$的中心之间，并表明，超阿尔芬湍流产生显着的散射也在${\cal R}_μ$，包括负值（核心中心和信封之间的字段反转）。我们发现${\cal R}_μ<1$占70%的核心，而${\cal R}_μ<0$占12%。在具有$|B_{\rm LOS}|>10$ \muG的核心中，81%具有${\cal R}_μ<1$。超阿尔文模型的这些预测与只允许${\cal R}_μ>1$的核心形成的双极漂移模型形成鲜明对比。
英文摘要：
We present synthetic OH Zeeman splitting measurements of a super-Alfvenic model of molecular clouds. We select dense cores from synthetic 13CO maps computed from the largest simulation to date of supersonic and super-Alfvenic turbulence. The synthetic Zeeman splitting measurements in the cores yield a relation between the magnetic field strength, B, and the column density, N, in good agreement with the observations. The large scatter in B at a fixed value of N is partly due to intrinsic variations in the magnetic field strength from core to core. We also compute the relative mass-to-flux ratio between the center of the cores and their envelopes, ${\cal R}_μ$, and show that super-Alfvenic turbulence produces a significant scatter also in ${\cal R}_μ$, including negative values (field reversal between core center and envelope). We find ${\cal R}_μ<1$ for 70% of the cores, and ${\cal R}_μ<0$ for 12%. Of the cores with $|B_{\rm LOS}|>10$ \muG, 81% have ${\cal R}_μ<1$. These predictions of the super-Alfvenic model are in stark contrast to the ambipolar drift model of core formation, where only ${\cal R}_μ>1$ is allowed.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
