Cold Solar Flares I. Microwave Domain Appendix

We present the appendix of the statistical analysis of ~100 solar flares with prominent electron acceleration, ``cold'' flares, in the microwave range.<br> These cold flares are characterized by a weak thermal response relative to nonthermal emission.<br> This work is a follow up of a previous statistical study of cold flares, which focused on hard X-ray emission to quantify the flare nonthermal component. Here we focus on the microwave emission.<br> Thermal response is evaluated by soft X-ray emission observed by GOES X-ray sensors.<br> We obtain spectral parameters of the flare gyrosynchrotron emission and reveal patterns of their temporal evolution.<br> Main results of the previous statistical study are confirmed: as compared to a ``mean'' flare, the cold flares have shorter durations, higher spectral peak frequencies, and harder spectral indices after the spectral peak.<br> Though, there are cold flares with moderate and low peak frequencies.<br> In a majority of cold flares, we find evidence in favor of Razin effect in the microwave spectra indicative of rather dense flaring loops.<br> We discuss obtained results in the context of electron acceleration efficiency. Appendix contains figures and tables with temporal and spectral characteristics of all cold flares analyzed in this work.<br> Figures present microwave dynamic spectra, time profiles in soft X-ray range and temporal evolution of gyrosynchrotron spectral parameters.<br> Tables contain quantifications of the flare microwave and soft X-ray emission, the beginning and the end of the flare impulsive phase, flare helioprojective coordinates, obtained patterns of parameter temporal evolution.本文提供了对约100例具有显著电子加速现象的微波波段"冷"耀斑（cold flares）进行统计分析的附录。 此类冷耀斑的特征为：相较于非热辐射，其热响应强度较弱。 本研究是此前一项冷耀斑统计研究的延续，该前期研究聚焦硬X射线辐射以量化耀斑的非热辐射组分；本文则将研究重点置于微波辐射。 热响应通过地球静止业务环境卫星（Geostationary Operational Environmental Satellite, GOES）X射线探测器观测到的软X射线辐射进行评估。 我们获取了耀斑回旋同步辐射的光谱参数，并揭示了其随时间演化的规律。 本研究验证了此前统计研究的主要结论：相较于"平均"耀斑，冷耀斑的持续时长更短、光谱峰值频率更高，且在光谱峰值后的光谱指数更硬。 不过，也存在峰值频率处于中等及偏低水平的冷耀斑。 在多数冷耀斑的微波光谱中，我们发现了支持拉津效应（Razin effect）的证据，这表明耀斑环的密度相对较高。 我们结合电子加速效率的相关背景对本研究所得结果展开了讨论。 附录收录了本文所分析的全部冷耀斑的时序与光谱特征相关的图表。 图表包含微波动态光谱、软X射线波段的时间剖面，以及回旋同步辐射光谱参数的随时间演化情况。 表格则定量表征了耀斑的微波与软X射线辐射、耀斑脉冲相的起止时刻、耀斑的日面投影坐标，以及本次研究得到的参数随时间演化的规律。