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首页> 外文期刊>The Astrophysical Journal. Letters >MESOGRANULATION AND THE SOLAR SURFACE MAGNETIC FIELD DISTRIBUTION
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MESOGRANULATION AND THE SOLAR SURFACE MAGNETIC FIELD DISTRIBUTION

机译：中霉素和太阳能表面磁场分布

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The relation of the solar surface magnetic field with mesogranular cells is studied using high spatial (≈100 km) and temporal (≈30 s) resolution data obtained with the IMaX instrument on board SUNRISE. First, mesogranular cells are identified using Lagrange tracers (corks) based on horizontal velocity fields obtained through local correlation tracking. After ≈20 minutes of integration, the tracers delineate a sharp mesogranular network with lanes of width below about 280 km. The preferential location of magnetic elements in mesogranular cells is tested quantitatively. Roughly 85% of pixels with magnetic field higher than 100 G are located in the near neighborhood of mesogranular lanes. Magnetic flux is therefore concentrated in mesogranular lanes rather than intergranular ones. Second, magnetic field extrapolations are performed to obtain field lines anchored in the observed flux elements. This analysis, therefore, is independent of the horizontal flows determined in the first part. A probability density function (PDF) is calculated for the distribution of distances between the footpoints of individual magnetic field lines. The PDF has an exponential shape at scales between 1 and 10 Mm, with a constant characteristic decay distance, indicating the absence of preferred convection scales in the mesogranular range. Our results support the view that mesogranulation is not an intrinsic convective scale (in the sense that it is not a primary energy-injection scale of solar convection), but also give quantitative confirmation that, nevertheless, the magnetic elements are preferentially found along mesogranular lanes.
机译：使用高空间（≈100km）和使用IMAX仪器上的MESON仪器的分辨率数据研究了太阳能表面磁场与中切形细胞的关系。首先，基于通过局部相关性跟踪获得的水平速度场，使用拉格朗日示踪剂（软木塞）来识别中切形细胞。在≈20分钟的集成之后，追踪器描绘了一个尖锐的间歇性网络，宽度低于约280公里。定量测试中木瓜细胞中磁性元素的优先位置。大约85％的磁场高于100g的像素位于间歇龟头的近附近。因此，磁通量集中在中切形泳道中而不是晶间血管内。其次，执行磁场外推，以获得锚定在观察到的磁通元件中的场线。因此，该分析独立于第一部分中确定的水平流。计算概率密度函数（PDF），用于分布各个磁场线的距离之间的距离。 PDF在1到10mm的刻度处具有指数形状，具有恒定的特征衰减距离，表示中切形范围内的优选对流量表。我们的研究结果支持中，中草化不是内在的对流量表（从中的太阳对流的主要能量注射量表），但也给出了定量确认，虽然，磁性元件沿中鳞状通道发现磁性元件。

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