磁泵激励网络磁元件慢模的研究
Excitation of Slow-Modes in Network Magnetic Elements Through Magnetic Pumping
摘要：
从太阳大气的辐射磁流体动力学模拟中，我们发现了一种新的机制，在磁通量浓度内的纵向慢模的激发。我们发现，在磁元素的直接周围的对流下降气流是负责的慢模式的激发。外部下沉气流和通量集中内部的等离子体运动之间的耦合由作用于磁通量集中的下沉气流的惯性力介导。这些力与向下的运动相结合，将内部大气向下泵送，这使得磁性元件的光球层和色球层中出现快速的下沉气流。在瞬态泵浦阶段之后，大气反弹，导致沿向上方向的磁通量浓度行进的慢模式。它在色球层高度发展成冲击波，可能能够产生某种动态纤维。我们提出了一个观测检测这个过程。
英文摘要：
From radiation magnetohydrodynamic simulations of the solar atmosphere we find a new mechanism for the excitation of longitudinal slow modes within magnetic flux concentrations. We find that the convective downdrafts in the immediate surroundings of magnetic elements are responsible for the excitation of slow modes. The coupling between the external downdraft and the plasma motion internal to the flux concentration is mediated by the inertial forces of the downdraft that act on the magnetic flux concentration. These forces, in conjunction with the downward movement, pump the internal atmosphere in the downward direction, which entails a fast downdraft in the photospheric and chromospheric layers of the magnetic element. Subsequent to the transient pumping phase, the atmosphere rebounds, causing a slow mode traveling along the magnetic flux concentration in the upward direction. It develops into a shock wave in chromospheric heights, possibly capable of producing some kind of dynamic fibril. We propose an observational detection of this process.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
