Abstract

To reveal and study magnetic features in the active region NOAA 11024, temporal changes in the profiles of the Stokes parameter V of photospheric lines Fe I λ 630.15 nm, Fe I λ 630.25 nm, Fe I λ 630.35 nm, and Ti I λ 630.38 nm were analyzed. Data of spectropolarimetric observations carried out with a high temporal and spatial resolution at the French-Italian solar telescope THEMIS (Tenerife Island, Spain) on July 4, 2009, were used. The examined area of the active region includes two pores of opposite polarity and two plages. One of the pores was rapidly developing. For 20 minutes of observations, eruptive processes, such as three Ellerman bombs and chromospheric surges, took place in this area. The V profiles of the photospheric lines substantially differ in different places of the active region. They are normal in most cases. In the pores, their amplitude increases toward outer edges of the pores. The maximum amplitude was noticed in the profiles at the boundary between the emerging pore and the Ellerman bomb. It was rapidly increasing with time. Two small patches with abnormal V profiles of the photospheric lines Fe I λ 630.15 and 630.25 nm have been found. The amplitude of the profiles in these patches was reduced. The amplitude and the shape of the profiles changed with time. One of the patches was between the pores, while the other was in the plage area. During the observations, the polarity of the photospheric magnetic field in these patches changed. Evidence of new, emerging, small-scale magnetic fluxes of opposite polarity was obtained. Due to the emergence of these fluxes, magnetic reconnections started and chromospheric surges and an Ellerman bomb appeared. It has been found that there are strong oscillations in the amplitude of the V profiles of photospheric lines Fe I λ 630.15 and 630.25 nm during Ellerman bombs, which may indicate the pulsed energy realize.

中文翻译：

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有源区NOAA 11024中的小规模磁性特征

摘要

为了揭示和研究活动区NOAA 11024中的磁特征，光球线Fe Iλ630.15 nm，Fe Iλ630.25 nm，Fe Iλ630.35 nm和Ti Iλ630.38 nm的斯托克斯参数V的轮廓随时间变化被分析。使用了在2009年7月4日在法国-意大利太阳望远镜THEMIS（西班牙特内里费岛）上以高时空分辨率进行的光谱极化观测数据。有源区域的检查区域包括两个极性相反的孔和两个螺孔。毛孔之一迅速发展。经过20分钟的观察，该地区发生了爆发过程，例如三枚Ellerman炸弹和色球冲动。在V在活动区域​​的不同位置，光球线的轮廓基本不同。在大多数情况下，这是正常现象。在孔中，它们的振幅朝着孔的外边缘增加。在出现的孔隙和Ellerman炸弹之间的边界处的剖面中注意到最大振幅。随着时间的流逝，它正在迅速增加。两个带有异常V的小补丁已发现光球线Fe Iλ630.15和630.25 nm的轮廓。这些贴片中的轮廓振幅减小了。轮廓的幅度和形状随时间变化。其中一个斑块位于毛孔之间，而另一个斑块位于毛孔区域。在观察期间，这些斑块中的光球磁场的极性发生了变化。获得了新的，新兴的，相反极性的小规模磁通量的证据。由于这些磁通的出现，开始了磁重联，并出现了色球激增和埃勒曼炸弹。已经发现，在Ellerman炸弹期间，光球线Fe Iλ630.15和630.25 nm的V曲线的振幅有很强的振荡，这可能表明实现了脉冲能量。