论文标题
研究光电点组的数量和亮度演化特征
Research on the quantity and brightness evolution characteristics of Photospheric Bright Points groups
论文作者
论文摘要
语境。光球明亮点（BPS）是光球的最小磁元素和磁通量管的脚步示踪剂，对BPS的研究具有重要意义。与对少数特定BP的特征和演变的研究相比，BPS组的研究可以使我们更好地了解BPS组的特征和整体活动。目标。我们的目的是找出不同亮度水平下BPS组的亮度和数量的演化特征，以及在安静区域和活跃区域之间这些特征如何不同。方法。我们提出了将传统技术和神经网络结合的混合BPS检测模型（HBD模型）。该模型用于检测和计算一对BBSO的TIO波段中有源和安静区域的连续高分辨率图像序列的每个帧的BPS亮度特性。使用机器学习聚类方法，根据从低到高的亮度，将每个帧的PBS分为四个级别组（Level1 level4）。最后，使用傅立叶变换和逆傅里叶变换来分析这四个级别组中BPS亮度和数量的演变。结果。 BPS组的活动不是随机和无序的。在不同级别的亮度中，它们的数量和亮度进化显示出复杂的变化。在四个级别的亮度中，活跃区域的BPS比安静区域的BP更活跃和强烈。然而，安静区域中BPS组的数量和亮度演变显示出较大的周期性变化的特征以及中亮度和高亮度水平（Level3和Level4）的周期性变化很小。 PBS组在安静区域的亮度演变有明显的周期性变化，但是活动区域处于完全随机和暴力的波动状态。
Context. Photospheric bright points (BPs), as the smallest magnetic element of the photosphere and the footpoint tracer of the magnetic flux tube, are of great significance to the study of BPs. Compared with the study of the characteristics and evolution of a few specific BPs, the study of BPs groups can provide us with a better understanding of the characteristics and overall activities of BPs groups. Aims. We aim to find out the evolution characteristics of the brightness and number of BPs groups at different brightness levels, and how these characteristics differ between quiet and active regions. Methods. We propose a hybrid BPs detection model (HBD Model) combining traditional technology and neural network. The Model is used to detect and calculate the BPs brightness characteristics of each frame of continuous high resolution image sequences of active and quiet regions in TiO-band of a pair of BBSO. Using machine learning clustering method, the PBs of each frame was divided into four levels groups (level1-level4) according to the brightness from low to high. Finally, Fourier transform and inverse Fourier transform are used to analyze the evolution of BPs brightness and quantity in these four levels groups. Results. The activities of BPs groups are not random and disorderly. In different levels of brightness, their quantity and brightness evolution show complex changes. Among the four levels of brightness, BPs in the active region were more active and intense than those in the quiet region. However, the quantity and brightness evolution of BPs groups in the quiet region showed the characteristics of large periodic changes and small periodic changes in the medium and high brightness levels (level3 and level4). The brightness evolution of PBs group in the quiet region has obvious periodic changes, but the active region is in a completely random and violent fluctuation state.
