在冠状磁场重建中包括立体信息
Including stereoscopic information in the reconstruction of coronal magnetic fields
摘要：
我们提出了一种方法，包括立体信息的三维结构的磁通管到冠状磁场的重建。由于日冕中的等离子体β较低，我们可以假设一个无力的磁场，电流密度平行于磁场线。为了简单起见，这里我们使用线性无力场。该方法使用光球上的视线磁场作为观测输入。通过将重建的磁场与观察到的结构进行比较来迭代地确定$α$的值。最后的配置是最佳的线性力的解决方案约束的光球磁图和所观察到的等离子体结构。作为一个例子，我们应用我们的方法SOHO MDI/EIT数据的活动区域。今后，计划将该方法用于分析STEREO飞行任务上SECCHI仪器的数据。
英文摘要：
We present a method to include stereoscopic information about the three dimensional structure of flux tubes into the reconstruction of the coronal magnetic field. Due to the low plasma beta in the corona we can assume a force free magnetic field, with the current density parallel to the magnetic field lines. Here we use linear force free fields for simplicity. The method uses the line of sight magnetic field on the photosphere as observational input. The value of $α$ is determined iteratively by comparing the reconstructed magnetic field with the observed structures. The final configuration is the optimal linear force solution constrained by both the photospheric magnetogram and the observed plasma structures. As an example we apply our method to SOHO MDI/EIT data of an active region. In the future it is planned to apply the method to analyse data from the SECCHI instrument aboard the STEREO mission.
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