论文标题
孔高于孔的染色体等离子体射血
Chromospheric plasma ejection above a pore
论文作者
论文摘要
我们提出了高空间分辨率的观测值，即短寿命瞬变，色带和喷气机，例如在Ca II H图像中的孔上方的事件，这些事件在基础光球中存在精细的结构，例如Umbral Dots，Lightbridge和Penumbral Micro细丝。我们发现，由于其水平场和环境垂直场之间的剪切，当前层是在对流良好结构边缘形成的。在这些事件周围的光球中观察到高垂直电流密度斑块，这表明在重新连接部位形成了电流板。在过去的研究框架内，低海拔重新连接可能是产生此类事件的机制。重新连接是由相反的极性场引起的，该极性场是由磁场线在孔细胞边缘的对流下面弯曲而产生的。
We present high spatial resolution observations of short lived transients, ribbon and jets like events above a pore in Ca II H images where fine structure like umbral dots, lightbridge and penumbral micro filaments are present in the underlying photosphere. We found that current layers are formed at the edges of convective fine structure due to the shear between their horizontal field and the ambient vertical field. High vertical electric current density patches are observed in the photosphere around these events which indicates the formation of a current sheet at the reconnection site. In the framework of past studies, low altitude reconnection could be the mechanism that produces such events. The reconnection is caused by an opposite polarity field produced by the bending of field lines by convective downflows at the edge of the pore fine structures.
