AI 中文总结
该研究利用SKA的高分辨率、宽波段等独特能力，针对太阳和恒星耀斑中的准周期脉冲，计划解决能量分配、磁重联等7类科学问题，以推进耀斑模型与相关物理研究。
AI 中文摘要
准周期脉冲（QPP）是一种未被标准耀斑模型描述的、被广泛研究的耀斑发射现象。由于对QPP现象的分析本质上需要高时间分辨率和高空间分辨率的结合，尤其是在射电波段，SKA的前所未有的能力为我们在QPP的观测研究中取得突破性进展提供了独特机会。SKA中频波段处于一个独特窗口，可同时研究粒子加速区的相干发射和日冕环中非热粒子的非相干回旋同步辐射。凭借额外的偏振维度和宽带光谱成像能力，回旋同步辐射（≥1 GHz）和等离子体发射中的QPP将有助于理解活动现象导致的局地磁场调制，以及约600 MHz以下粒子加速观测的响应。利用SKA可解决的部分具体科学问题包括：(a) QPP在耀斑能量分配中的作用；(b) 不同类型QPP对耀斑区的地震学研究；(c) 太阳和恒星耀斑中QPP的异同；(d) 推进标准耀斑模型；(e) 重复磁重联的物理：自发与诱导；(f) 机器学习（ML）技术在QPP检测、分类和分析中的应用；(g) 弱耀斑中的QPP。其中弱耀斑这一主题可借助SKA得到显著推进，SKA将能对弱能量释放事件进行高 cadence（高节奏）高保真射电成像。
英文摘要
An intensively studied phenomenon which is not described by the standard flare model are quasi-periodic pulsations (QPP) of the flaring emission. As analysis of the QPP phenomenon intrinsically requires a combination of high time and spatial resolutions, especially in the radio band, the unprecedented capabilities of SKA offer us a unique opportunity to reach a breakthrough progress in the observational study of QPP. The SKA-Mid-frequency band falls in a unique window where both coherent emissions from particle acceleration sites and incoherent gyrosynchrotron emissions from non-thermal particles in coronal loops can be studied. With an additional polarisation dimension and the capability to perform wideband spectroscopic imaging, the QPPs in gyrosynchrotron emission ($\ge 1$~GHz) and plasma emission will help understand the local magnetic field modulation due to active phenomena and the response seen in the particle acceleration observable below ~600~MHz. An incomplete list of specific science questions to be addressed with SKA includes (a) the role of QPP in the energy partition in flares, (b) seismology of flaring sites by QPP of different classes, (c ) differences and similarities between QPP in solar and stellar flares, (d) advancing the standard flare model, (e) the physics of repetitive magnetic reconnection: spontaneous vs induced, (f) ML techniques in the detection, classification and analysis of QPP, (g) QPP in weak flares. The latter topic could be especially advanced with SKA which will allow for high-cadence high fidelity radio imaging of weak energy release events.
CommentsPublished in Advancing Astrophysics with the SKA II (AASKAII), 2026 (arXiv:2606.20366). Report-no:AASKAII/Nakariakov01. Advancing Astrophysics with SKA II (AASKAII) outlines the transformative scientific advances that will be enabled by the SKA telescopes
