论文标题
Zebra模式的替代模型，2011年6月21日
Alternative Models of Zebra Patterns in the Event on June 21, 2011
论文作者
论文摘要
根据改进的方法来确定斑马结构的相应条纹的谐波数，对2011年6月21日爆发无线电发射的光谱特性进行分析。通过在时间频谱中使用斑马结构的参数，并基于双等离子体共振模型，磁场及其动力学，电子密度以及谐波s = 55和56的条纹之间的距离的时间变化在频率183 MHz附近的频率上已确定在爆发生成的生成区域中。还确定了田间的比例特征与沿电动管的轴沿轴的密度及其对时间依赖性之间的关系之间的关系。获得的磁场（第一个谐波的1.5 g，等离子体频率的第二个谐波的0.75 g）被证明很小，以至于基于MHD波，它无法解释频谱的动态特征，其次，它导致血浆betta的大量值（> 1）。还发现了基于双等离子体共振的斑马模式的发电机理的其他可能的困难。吹口哨的另一种可能的机制在定性上解释了该斑马的主要观察特征。在这种情况下，所需的磁场约为4.5 g，血浆betta为0.14，完全对应于冠状条件。
The analysis of the spectral characteristics of the burst radio emission on June 21, 2011 was carried out on the basis of an improved methodology for determining harmonic numbers for the corresponding stripes of the zebra structure. By using the parameters of the zebra structure in the time frequency spectrum and basing on the double plasma resonance model, the magnetic field and its dynamics, electron density, and the time variation of the distance between the stripes with harmonics s = 55 and 56 and adjacent stripes near the frequency 183 MHz have been determined in the burst generation region. The relationships between the scale characteristics of the field and the density along and across the axis of the power tube and their dependence on time have been also determined. The field obtained (1.5 G for the first harmonic and 0.75 G for the second harmonic of the plasma frequency) turned out to be so small that, firstly, it fails to explain the dynamic features of the spectrum based on MHD waves, and secondly, it results in large values for plasma betta (>1). Other possible difficulties of the generation mechanism of bursts with zebra pattern based on the double plasma resonance are also noted. Another possible mechanism, with whistlers explains qualitatively the main observational characteristics of this zebra. The magnetic field required in this case is about 4.5 G, and the plasma betta is 0.14, which fully corresponds to the coronal conditions.
