Relationships Between Physical Parameters of Umbral Dots Measured for 12 Sunspot Umbras with the Goode Solar Telescope
Relationships Between Physical Parameters of Umbral Dots Measured for 12 Sunspot Umbras with the Goode Solar Telescope
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DOI：
10.1007/s11207-023-02198-3
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发表时间：
2023-09
期刊：
影响因子：
2.8
通讯作者：
M. A. Calisir;H. T. Yazici;A. Kilçik;V. Yurchyshyn
中科院分区：
文献类型：
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作者：
M. A. Calisir;H. T. Yazici;A. Kilçik;V. Yurchyshyn
我们对本影点（UD）的物理参数和关系进行了全面的分析，这有助于我们理解太阳的物理特性。这项研究基于对大熊太阳天文台古德太阳望远镜记录的高分辨率数据在属于 10 个不同太阳黑子的 12 个本影中检测到的 UD 的详细分析。我们获得了每个 UD 的物理参数（总强度、直径、偏心率、寿命和动态速度），并使用线性和非线性方法计算相关系数，以揭示这些参数之间的关系。我们发现：i) UD 的直径在 92.2 km 到 246.5 km 之间变化，偏心率在 0.02 到 0.65 之间变化，UD 的寿命在 0.75 到 120.00 min 之间变化，动速度从 0.01 km s−1 到 3.80 km s−1 变化。 ii) 强度-直径和直径-偏心率关系显示出最高程度的相关性，而直径-寿命关系获得最低线性相关性，偏心率-寿命关系获得最低非线性相关性。 iii) 一般来说，非线性相关系数无一例外地高于线性相关系数。 iv) 在直径-偏心率关系的情况下，线性和非线性相关系数彼此非常接近。 v) 虽然平均直径、强度和偏心率与本影区域有关，但 UD 的平均寿命和动态速度并不依赖于本影区域。
We present a comprehensive analysis of the physical parameters and relationships of umbral dots (UDs), which assists in our understanding of the physical properties of the Sun. This study is based on a detailed analysis of UDs detected in 12 umbras belonging to 10 different sunspots using high-resolution data recorded by the Goode Solar Telescope at Big Bear Solar Observatory. We obtained the physical parameters (total intensity, diameter, eccentricity, lifetime, and dynamic velocity) of each UD and calculated correlation coefficients using linear and nonlinear approaches to reveal the relationships between these parameters. We found that: i) The diameter of UDs vary between 92.2 km and 246.5 km, the eccentricity varies between 0.02 and 0.65, the lifetimes of UDs vary from 0.75 to 120.00 min and the dynamic velocities vary from 0.01 km s−1to 3.80 km s−1. ii) The intensity–diameter and diameter–eccentricity relationships show the highest degree of correlation, while the lowest linear correlation was obtained for the diameter–lifetime relationship and the lowest nonlinear correlation was obtained for the eccentricity–lifetime relationship. iii) In general, the nonlinear correlation coefficients are higher than the linear correlation without exception. iv) The linear and nonlinear correlation coefficients are very close to each other in the case of the diameter–eccentricity relation. v) While the average diameter, intensity, and eccentricity are related to the umbral area, the average lifetime and dynamic velocity of UDs are not dependent on the umbral area.