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Dynamics of the magnetic field and velocity field in an emerging active region

机译：新兴有源区中磁场和速度场的动力学

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摘要

The dynamics of the magnetic field and velocity field during the birth and an early development stage of a major active region is studied. SOHO MDI longitudinal-component magnetograms, Dopplergrams, and continuum images are used. The presence of an enhanced material upflow in the photosphere during the passing of the top of the magnetic flux loop, forming the active region, is revealed. The maximum upflow velocity is 2 km/s and the maximum size of the upflow area exceeds 20000 km. The lifetime of the upflow is about two hours. The undulating form of the magnetic flux tubes crossing the photosphere is confirmed. A structural-analysis technique is used to show that the trailing polarity field at the formation stage of the active region is more highly structured than the leading polarity field. [PUBLICATION ABSTRACT]
机译：研究了主要活动区域的诞生和早期发展阶段的磁场和速度场的动力学。使用SOHO MDI纵向分量磁图，多普勒图和连续图像。揭示了在通过磁通回路的顶部而形成有源区的过程中，在光球中存在增强的材料上流。最大上流速度为2 km / s，最大上流面积超过20000 km。上溢的寿命约为两个小时。确认了穿过光球的磁通管的起伏形式。使用结构分析技术表明，在有源区形成阶段的尾随极性场比前导极性场具有更高的结构。 [出版物摘要]

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