论文标题
虹膜爆发特性
IRIS burst properties in active regions
论文作者
论文摘要
界面区域成像光谱仪（IRIS）爆发是局部特征，被认为是由磁重新连接驱动的。尽管这些事件是经过充分研究的，但尚不清楚它们的性质是否随着宿主活动区域（ARS）的发展而变化。在这里，我们旨在了解虹膜爆发的可测量性能在其宿主ARS的演变过程中是否保持一致。我们研究了由Iris采样的42个密集的400步栅格。这些rasters均覆盖了七个AR之一，每个AR至少在至少48小时内进行了四次采样。自动检测算法用于识别虹膜突发曲线。来自太阳能动力学观测站的热震和磁成像仪的数据也用于提供有关共同空间磁场的背景。在所研究的栅栏中，发现36个包含虹膜爆发曲线。五个AR（11850，11909，11916，12104和12139）包含每个栅格中的虹膜爆发曲线，而将它们采样，而一个AR（11871）随时都不包含此类光谱。总共确定了属于752个连接的对象的4019个虹膜突发曲线，我们将其定义为父虹膜突发。仅在每个栅格的紧凑区域内检测到虹膜爆发曲线，随着宿主AR的老化，这些区域的大小似乎增加。对于这些ARS，没有发现虹膜突发曲线曲线频率的系统变化或虹膜突发曲线的光谱特征。最后，93％的父虹膜在1弧形^2和4弧之间爆发，在光球中的双杆子发生了共同空间。总体而言，在整个AR的演化中，虹膜爆发具有非常一致的光谱和空间特性。这些事件主要在较大，更复杂的AR的核心内形成，随着宿主区域本身的发展，包含这些事件的区域的大小似乎在增加。
Interface Region Imaging Spectrograph (IRIS) bursts are localised features thought to be driven by magnetic reconnection. Although these events are well-studied, it remains unknown whether their properties vary as their host active regions (ARs) evolve. Here, we aim to understand whether the measurable properties of IRIS bursts are consistent during the evolution of their host ARs. We study 42 dense 400-step rasters sampled by IRIS. These rasters each covered one of seven ARs, with each AR being sampled at least four times over a minimum of 48 hours. An automated detection algorithm is used to identify IRIS burst profiles. Data from the Solar Dynamics Observatory's Helioseismic and Magnetic Imager are also used to provide context about the co-spatial line-of-sight magnetic field. Of the rasters studied, 36 were found to contain IRIS burst profiles. Five ARs (11850, 11909, 11916, 12104, and 12139) contained IRIS burst profiles in each raster that sampled them whilst one AR (11871) was found to contain no such spectra at any time. A total of 4019 IRIS burst profiles belonging to 752 connected objects, which we define as parent IRIS bursts, were identified. IRIS burst profiles were only detected within compact regions in each raster, with these regions appearing to increase in size as the host ARs aged. No systematic changes in the frequency of IRIS burst profiles or the spectral characteristic of IRIS burst profiles through time were found for these ARs. Finally, 93 % of parent IRIS bursts with areas between 1 arcsec^2 and 4 arcsec^2 occurred co-spatial to bi-poles in the photosphere. Overall, IRIS bursts have remarkably consistent spectral and spatial properties throughout the evolution of ARs. These events predominantly form within the cores of larger and more complex ARs, with the regions containing these events appearing to increase in size as the host region itself evolves.
