天文学进展2017，Vol.35Issue(3)：267-287,21.DOI:10.3969/j.issn.1000-8349.2017.03.01
日珥振荡研究进展
Research Progress on Prominence Oscillation
摘要
Abstract
According to velocity amplitude, prominence oscillations can be classified into two groups: large amplitude oscillations (≥20 km·s-1) and small amplitude ones (1～3 km·s-1). Large amplitude oscillations are usually initiated by interactions between prominences and coronal waves that are generated by distant flares. Sometimes, nearby energetic events, such as jets, sub-flares or magnetic reconnection, can also trigger such oscillations. For small am-plitude oscillations, the 5-min photospheric and 3-min chromospheric oscillations are possible origins. This kind of oscillations is common among filament threads and can be explained by MHD wave modes theoretically. Generally, temporal or spatial damping is attributed to various energy dissipation processes, such as coronal viscosity, magnetic dissipation, radioac-tive losses of optically thin plasma, thermal conduction, heating and wave leakage. It seems that thermal mechanisms can only attenuate slow mode waves with low efficiency and they do not affect fast mode waves. For fast mode and Alfvén mode, ion-neutral collision may be a possible mechanism, though the damping rate do not match the observation well. Apart from these non-ideal processes, fast mode waves in filament threads can be damped by resonant absorption. Prominence oscillation is intensely related to the physical properties of the the prominence and ambient corona. Therefore, prominence seismology is developed to study the prominence and the coronal environment where it is embedded through the oscillations. Moreover, prominence oscillations can be used as flare or CME precursor in some cases. How-ever, further efforts are needed as theories cannot cover all the observed features yet. It will easier for us to set up a more intuitive impression on the prominences with upcoming high resolution instruments and developing 3D simulation techniques.关键词
日珥振荡/暗条/日珥/珥震学Key words
prominence oscillation/filament/prominence/prominence seismology分类
天文与地球科学引用本文复制引用
谢文彬,陈嘉琳..日珥振荡研究进展[J].天文学进展,2017,35(3):267-287,21.基金项目
国家自然科学基金(11078012) （11078012）
