AI 中文总结
该研究利用SDO的观测数据追踪蝶形日冕洞在太阳盘面的演化，发现其面积、磁通量与辐射强度的变化规律，且该日冕洞对应后续的高速太阳风流，建立了日冕洞演化与太阳风的关联。
AI 中文摘要
我们利用SDO/AIA 193埃图像和SDO/HMI视线磁图，研究了2025年9月8日至14日观测到的一个蝶形日冕洞（CH）的演化。采用固定100 DN强度阈值识别CH边界，并在太阳盘面上追踪其面积、平均极紫外强度和总 unsigned 磁通量。当CH接近中央子午线时，其面积从约7.70×10^16平方米增加到1.63×10^17平方米，unsigned磁通量从8.68×10^21 Mx增加到1.91×10^22 Mx，而平均193埃强度从约61 DN下降到45 DN。面积和unsigned磁通量呈现相似的时间趋势，而强度变化则相反。在通过中央子午线附近时，这些量在数天内保持相对稳定。约2至4天后在1天文单位处检测到高速太阳风流，速度达到600至750 km/s，与该CH作为其可能的太阳源一致。这些结果将CH的形态、辐射和磁演化与后续的高速太阳风流联系起来。
英文摘要
We studied the evolution of a butterfly-shaped coronal hole (CH) observed from 2025 September 8 to 14 using SDO/AIA 193~Å images and SDO/HMI line-of-sight magnetograms. The CH boundary was identified using a fixed 100~DN intensity threshold, and its area, mean EUV intensity, and total unsigned magnetic flux were tracked across the solar disk. As the CH approached the central meridian, its area increased from approximately $7.70\times10^{16}$ to $1.63\times10^{17}$~m$^{2}$ and its unsigned magnetic flux from $8.68\times10^{21}$ to $1.91\times10^{22}$~Mx, while the mean 193~Å intensity decreased from about 61 to 45~DN. The area and unsigned flux showed similar temporal trends, whereas the intensity varied oppositely. Near central-meridian passage, these quantities remained relatively stable for several days. A high-speed solar-wind stream was detected at 1~AU about 2--4 days later, reaching 600--750~km~s$^{-1}$, consistent with the CH being its likely solar source. These results link the morphological, radiative, and magnetic evolution of the CH with the subsequent high-speed solar-wind stream.
