运动磁结构与拱状暗条系统的演化分析

发布时间：2018-03-22 03:27

本文选题：黑子　切入点：亮桥　出处：《南京信息工程大学》2015年硕士论文　论文类型：学位论文

【摘要】：太阳不断地产生能量并通过电磁辐射等方式向外传递信息。科学家根据这些有限信息,从整体思考、简化细节,反推得到太阳的能源机制、结构等物理信息,并根据实际观测反馈验证这些推理的正确性。对太阳这个复杂巨型系统的研究不但对天文学、物理学有重要的意义,也处处反映了系统科学中反馈、整体思想在太阳物理中的重要作用。太阳黑子中的亮桥(Light Bridges, LBs)是一个十分有趣的结构,尽管它已经被详细研究了几十年,然而关于它的形成、演化、消失、磁场结构以及与其他太阳活动的关系等方面还存在很多的问题。运动磁结构(Moving Magnetic Features, MMFs)是另外一种与太阳黑子有关的结构。它通常被描述为从黑子半影出现,并快速向黑子外围的网络磁场区域运动。作为太阳表面的一种基本磁结构,运动磁结构在太阳活动区的衰退中起着重要的作用,然而关于它的形成原因还存在很多未知问题。所有的这些与太阳黑子有关的问题都亟待解决,任何为研究亮桥、运动磁结构等与太阳黑子结构相关的现象而投入的努力都是十分有意义的,它们对理解太阳活动机制有着巨大的帮助。在Hα观测中,拱状暗条系统(arch filament systems, AFSs)通常被认为是磁通量浮现区(emerging flux region, EFR)在色球层的表现。目前,它与黑子周边的运动磁结构(moving magnetic features, MMFs)之间的关系还不是很清楚。而这两者之间可能存在的关系,对于解释太阳基本结构的形成机制是十分重要的。通过对来自NVST的H α与SDO的多波段观测数据对编号为11711的太阳活动区的分析发现,每一个运动磁结构都是从亮桥北部附近的半影区域浮现。它们极性与对应的黑子极性相反,并且总是有相应的暗纤维相连。这些暗条纤维不断地扭缠与重组,形成了具有三条分支的拱状暗条系统。这些运动磁结构不断地与北部周围的正极磁场对消,产生了各种活动,使得拱状暗条的北部足点重联并最终瓦解。
[Abstract]:The sun constantly generates energy and transmits information through electromagnetic radiation and other means. Based on this limited information, scientists think from the whole, simplify details, and back to the sun's energy mechanism, structure and other physical information. The research on the complex giant system of the sun is not only of great significance to astronomy and physics, but also reflects the feedback in system science everywhere. The whole idea plays an important role in heliophysics. The bright bridge in sunspots, Light Bridges (LBs), is a very interesting structure, although it has been studied in detail for decades, but its formation, evolution, disappearance. There are many problems with the magnetic field structure and its relationship with other solar activities. Moving Magnetic Features (MMFs) is another kind of structure associated with sunspots. It is usually described as emerging from the sunspot penumbra. As a basic magnetic structure on the surface of the sun, the moving magnetic structure plays an important role in the decline of the solar active region. However, there are still many unknown questions about the cause of its formation. All of these sunspot related problems need to be solved urgently. The efforts that have been devoted to phenomena related to sunspot structures, such as moving magnetic structures, are of great significance and are of great help in understanding the mechanisms of solar activity. Arch filament systems (AFS) is generally considered to be the representation of the emerging flux region (EFR) in the chromospheric layer. The relationship between it and moving magnetic features (MMFs) around the sunspot is not very clear. It is very important to explain the formation mechanism of the basic structure of the sun. By analyzing the multi-band observation data of H 伪 and SDO from NVST, we find that the solar active region numbered 11711 is found. Each moving magnetic structure emerges from the penumbra near the northern part of the bridge. Their polarity is opposite to the corresponding sunspot polarity, and they are always connected with the corresponding dark fibers, which are constantly twisting and reorganizing. These moving magnetic structures are constantly counteracted with the positive magnetic field around the north resulting in a variety of activities resulting in the reconnection and eventual disintegration of the northern foot of the arch strip.
【学位授予单位】：南京信息工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P182

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