太阳射电暴与喷发及受限耀斑的关联
The Association of Solar Radio Bursts with Eruptive and Confined Flares
- Space Warfare Directorate, Air Force Research Laboratory（太空作战司令部，空军研究实验室）
- University of New Mexico（新墨西哥大学）
- University of Colorado, Boulder（科罗拉多大学博尔德分校）
- National Solar Observatory（国家太阳观测台）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本研究通过对比2010-2016年喷发与受限耀斑的射电暴关联率，发现受限耀斑缺乏II型和IV型辐射，而喷发耀斑与多种射电暴高度关联，并基于重联拓扑解释了这一差异。
AI中文摘要：
我们使用Kazachenko（2023）识别的2010年至2016年间的事件样本，对与喷发（与日冕物质抛射相关）耀斑和受限耀斑相关的米波射电辐射进行了分类。我们发现两类耀斑在射电暴发生上存在显著差异：对于软X射线耀斑强度大于M1.4的事件，受限耀斑大多缺乏II型（关联率1%）和IV型（关联率6%）辐射。约15%的≥M1.4受限耀斑样本与脉冲相III型射电暴相关。另一方面，喷发耀斑与II型、III型（包括脉冲相和晚期相）及IV型射电暴的关联率在45-60%之间。不同类型的射电暴与不同的驱动机制相关（III型与电子束相关，II型与激波相关，IV型与耀斑后环相关），因此所有三种射电暴类型与喷发耀斑的关联如此显著是引人注目的。这些结果可以从主要候选耀斑类型的重联拓扑结构来解释，即受限耀斑对应闭合场线之间的重联，喷发耀斑对应CSHKP模型中的X点重联，而喷流型耀斑和III型射电暴则与互换重联相关。
英文摘要：
We classify the metric radio emission associated with eruptive (CME-associated) and confined flares using the sample of events between 2010 and 2016 identified by Kazachenko (2023). We find striking differences in the occurrence of radio bursts between the two classes of flare: for soft X-ray flare sizes above M1.4, confined flares largely lack Type II (1\% association rate) and Type IV (6\%) emission. Approximately 15\% of the sample of $\geq$M1.4 confined flares are associated with impulsive-phase Type III bursts. On the other hand, eruptive flares are associated with Type II, Type III (both impulsive and late phase), and Type IV bursts 45-60\% of the time. The different types of radio burst are associated with different drivers (IIIs with electron beams, IIs with shocks, IVs with post-flare loops), so it is striking that the connection of all three burst types to eruptive flares is so pronounced. These results can be interpreted in terms of the reconnection topology of the principle candidate flare types, viz., reconnection between closed field lines for confined flares and X-point reconnection in a CSHKP model for eruptive flares, with interchange reconnection for jet-type flares and Type III bursts.
