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arXiv 1409.0896astro-ph.SR
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3D无线电和X射线建模和数据分析软件:揭示耀斑的复杂性

3D Radio and X-Ray Modeling and Data Analysis Software: Revealing Flare Complexity

Gelu M. Nita, Gregory D. Fleishman, Alexey A. Kuznetsov, Eduard P. Kontar, Dale E. Gary

摘要:

我们对早期开发的用于微波和X射线发射建模的基于IDL的模拟工具进行了重大增强。基于对象的架构提供了交互式图形用户界面,其允许用户导入光球磁场图并执行磁场外推以几乎立即生成3D磁场模型,通过交互式地创建磁场线和相关联的磁通量管来研究这些模型的磁拓扑,用用户定义的非均匀热等离子体和各向异性、非均匀非热电子分布;调查从模型计算的无线电和X射线发射的空间和光谱特性,并将模型导出的图像和光谱与观测数据进行比较。该应用程序集成了共享对象库,其中包含用FORTRAN和C++开发的快速陀螺同步辐射代码,用IDL开发的软、硬X射线代码,基于FORTRAN的势场外推例程和基于IDL的线性无力场外推例程。交互式界面允许用户添加任何符合我们的界面标准的用户定义的辐射代码,以及用户定义的磁场外推例程。在这里,我们使用这个工具来分析一个简单的单环耀斑,并使用该模型来约束磁耀斑环的三维结构和该环内的快速电子的三维空间分布。我们迭代计算多频微波和多能X射线图像从现实的磁通量管从外推的前采取的耀斑的磁图,并将它们与成像数据SDO,NoRH和RHESSI仪器。我们用这个事件来说明使用的工具,一般解释太阳耀斑,以解决太阳物理学中的不同问题。

英文摘要:

We have undertaken a major enhancement of our IDL-based simulation tools developed earlier for modeling microwave and X-ray emission. The object-based architecture provides an interactive graphical user interface that allows the user to import photospheric magnetic field maps and perform magnetic field extrapolations to almost instantly generate 3D magnetic field models, to investigate the magnetic topology of these models by interactively creating magnetic field lines and associated magnetic flux tubes, to populate the flux tubes with user-defined nonuniform thermal plasma and anisotropic, nonuniform, nonthermal electron distributions; to investigate the spatial and spectral properties of radio and X-ray emission calculated from the model, and to compare the model-derived images and spectra with observational data. The application integrates shared-object libraries containing fast gyrosynchrotron emission codes developed in FORTRAN and C++, soft and hard X-ray codes developed in IDL, a FORTRAN-based potential-field extrapolation routine and an IDL-based linear force free field extrapolation routine. The interactive interface allows users to add any user-defined radiation code that adheres to our interface standards, as well as user-defined magnetic field extrapolation routines. Here we use this tool to analyze a simple single-loop flare and use the model to constrain the 3D structure of the magnetic flaring loop and 3D spatial distribution of the fast electrons inside this loop. We iteratively compute multi-frequency microwave and multi-energy X-ray images from realistic magnetic fluxtubes obtained from an extrapolation of a magnetogram taken prior to the flare, and compare them with imaging data obtained by SDO, NoRH, and RHESSI instruments. We use this event to illustrate use of the tool for general interpretation of solar flares to address disparate problems in solar physics.

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