Abstract

At the present time, the induction of several microgauss in large-scale fields of the Galaxy has been repeatedly confirmed. There are numerous arguments in favor of the fact that the magnetic field exhibits so-called reversals associated with a direction change from one region to another. Such configurations are allowed in the nonlinear equations context of the dynamo theory, which describes the large-scale magnetic-field evolution. In the present study, reversals are modeled using the so-called no-z approximation based on the fact that the galactic disk is sufficiently thin. The magnetic field generation that exhibit both single and double sign changes with distance from the center is observed. From an observational point of view, one of the main methods for studying magnetic fields is to gauge the Faraday rotation measure of radio waves coming from pulsars. Its value can characterize the integral magnitude of the magnetic field, and the sign indicates its direction. A study of the pulsar distribution with large Faraday rotation measures (\(\left| {RM} \right| > 200\) rad/m²) is presented. The results indicate that there is a region of \(4.8\;{\text{kpc}} < r < 7.3\;{\text{kpc}}\) in the Galaxy in which the magnetic field is oriented counterclockwise. At the ring edges, the magnetic field reverses its direction. These results are in close agreement both with theoretical concepts and other studies dedicated to the structure observations of the magnetic field in the Galaxy.

中文翻译：

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银河磁场反转形成的结构和特征

摘要

目前，已经多次确认了在银河系的大范围中感应出几种微高斯。有许多论据支持这样一个事实，即磁场表现出与从一个区域到另一区域的方向变化相关的所谓的反转。这样的配置在发电机理论的非线性方程上下文中是允许的，该理论描述了大规模磁场的演化。在本研究中，基于银盘足够薄的事实，使用所谓的no-z近似对逆转进行建模。观察到随着距中心的距离的变化而产生单，双符号变化的磁场产生。从观察的角度来看，研究磁场的主要方法之一是测量脉冲星发出的无线电波的法拉第旋转量度。它的值可以表征磁场的积分强度，符号表示其方向。法拉第自转量大的脉冲星分布研究（\（\ left | {RM} \ right |> 200 \） rad / m ²）。结果表明，在银河系中有一个\（4.8 \; {\ text {kpc}} <r <7.3 \; {\ text {kpc}} \\}的区域，其中磁场是逆时针方向的。在环边缘，磁场反转其方向。这些结果与理论概念以及致力于银河系磁场结构观测的其他研究都非常吻合。