标题： 太阳耀斑条纹中子结构的多波长观测 显示英文标题

标题： Multi-wavelength observations of substructures in solar flare ribbons

摘要： 太阳耀斑条纹是低大气中的特征，表现出增强的发射强度，在过渡区和高层色球的H$\alpha$和极紫外图像中尤为明显。 在本研究中，我们提供了观测证据，表明耀斑条纹由大量相干子结构组成，我们称之为\textit{肋条}。 我们的观测使用了瑞典1米太阳望远镜/CRisp成像光谱偏振计（SST/CRISP）仪器，专注于2014年6月10日发生的一个X1.5级耀斑。 利用从SST/CRISP获得的数据，我们使用CRISPEX这一交互式图形用户界面工具，单独跟踪和分析这些细丝的动态演化，从而初步了解它们的特性。 我们的研究揭示了耀斑条纹内存在两种不同的细丝类别。 第一类细丝在其生命周期内以恒定速度垂直于条纹向太阳表面演化。 我们展示了一个速度为18.04公里/秒的细丝，持续时间为67秒。 第二类细丝具有变化的速度，表明其演化模式更为复杂且非线性。 我们展示了一个平均加速度为0.70公里/秒$^2$、持续时间为22.8秒的细丝。 具有不同特性的细丝为更详细地研究太阳耀斑对色球层的响应提供了机会。 显示英文摘要

摘要： Solar flare ribbons are features in the lower atmosphere that show enhanced emission intensity, particularly noticeable in H$\alpha$ and EUV images of the transition region and upper chromosphere. In this study, we provide observational evidence that the flare ribbons are composed of a large number of coherent sub-structures that we call \textit{riblets}. Our observations, taken with the Swedish 1-m Solar Telescope / CRisp Imaging Spectro-Polarimeter (SST/CRISP) instrument, focused on an X1.5-class flare that occurred on June 10, 2014. Using data obtained from SST/CRISP, we utilize CRISPEX, an interactive graphical user interface tool, to individually track and analyze the dynamic evolution of these riblets, gaining initial insights into their characteristics. Our investigation reveals the existence of two distinct categories of riblets within the flare ribbons. The first category comprises riblets that evolve perpendicular to the ribbon towards the solar surface at a constant velocity over their lifespan. We present one such riblet with a velocity of 18.04 km/s, persisting for a duration of 67 seconds. The second category includes riblets with varying velocities, indicating a more complex and non-linear evolution pattern. We present one such riblet with an average acceleration of 0.70 km/s$^2$ and a duration of 22.8 seconds. Riblets, with their distinct characteristics, provide an opportunity to study the chromospheric response to a solar flare in a more detailed manner.