论文标题
首先观察II型太阳能无线电爆发在固定状态和漂流状态之间的过渡
First Observation of a Type II Solar Radio Burst Transitioning Between a Stationary and Drifting State
论文作者
论文摘要
据信站立冲击是负责固定的II型太阳能无线电爆发的原因，而流动II型爆发是通过与冠状质量弹出（CMES）相关的移动冲击而激发的。对静止或漂流II型爆发的观察很常见，但尚未报告两种状态之间的过渡。在这里，我们提出了II型爆发，该爆发显示了从静止状态到漂流状态的清晰，连续的过渡，这是对同类的第一个观察。此外，在爆发的固定部分中观察到带状分裂，以及固定排放中的阴性和正频滴罚细节。无线电排放与观察到的射流和狭窄的CME的关系在多个波长之间进行了研究，并确定了导致过渡II型爆发的机制。我们发现，喷气喷发会产生流媒体 - 释放CME，并且CME驱动的冲击与流媒体之间的相互作用可能是对观察到的无线电发射负责的。
Standing shocks are believed to be responsible for stationary Type II solar radio bursts, whereas drifting Type II bursts are excited by moving shocks often related to coronal mass ejections (CMEs). Observations of either stationary or drifting Type II bursts are common, but a transition between the two states has not yet been reported. Here, we present a Type II burst which shows a clear, continuous transition from a stationary to a drifting state, the first observation of its kind. Moreover, band splitting is observed in the stationary parts of the burst, as well as intriguing negative and positive frequency-drift fine structures within the stationary emissions. The relation of the radio emissions to an observed jet and a narrow CME was investigated across multiple wavelengths, and the mechanisms leading to the transitioning Type II burst were determined. We find that a jet eruption generates a streamer-puff CME and that the interplay between the CME-driven shock and the streamer is likely to be responsible for the observed radio emissions.
