论文标题
用梯度技术跟踪磁场：空间滤波效果和使用干涉仪
Tracing Magnetic Fields with the Gradient Technique: Spatial Filtering Effect and Use of Interferometers
论文作者
论文摘要
在天体物理环境中探测磁场既重要又具有挑战性。梯度技术（GT）是追踪磁场的新工具，它植根于磁流失动力（MHD）湍流和湍流磁重新连接的性质。在这项工作中，我们检查了将GT应用于从亚alfvénic和trans-alfvénicMHD模拟获得的合成同步加速器发射和光谱数据时的性能。在没有低空间频率的情况下，我们证明了GT在追踪磁场中的准确性提高。此外，我们将低空间频率过滤器应用于从galfa- \ ion {h} {1}调查中选择的弥漫性中性氢区域。我们的结果表明，从GT推断出的磁场和Planck 353 GHz极化测量值之间的比对增加。
Probing magnetic fields in astrophysical environments is both important and challenging. The Gradient Technique (GT) is a new tool for tracing magnetic fields, rooted in the properties of magnetohydrodynamic (MHD) turbulence and turbulent magnetic reconnection. In this work, we examine the performance of GT when applied to synthetic synchrotron emission and spectroscopic data obtained from sub-Alfvénic and trans-Alfvénic MHD simulations. We demonstrate the improved accuracy of GT in tracing magnetic fields in the absence of low-spatial frequencies. Additionally, we apply a low-spatial frequency filter to a diffuse neutral hydrogen region selected from the GALFA-\ion{H}{1} survey. Our results show an increased alignment between the magnetic fields inferred from GT and the Planck 353 GHz polarization measurements.
