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首页> 外文期刊>The Astrophysical journal >Complete Models of Axisymmetric Sunspots: Magnetoconvection with Coronal Heating
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Complete Models of Axisymmetric Sunspots: Magnetoconvection with Coronal Heating

机译:轴对称黑子的完整模型:日冕加热的磁对流

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We present detailed results of numerical experiments into the nature of complete sunspots. The models remain highly idealized but include fully nonlinear compressible magnetoconvection in an axisymmetric layer that drives energy into an overlying, low-β plasma. We survey a range of parameters in which the resulting magnetoconvection displays the formation of pore- and sunspot-like behavior and assess the coronal signatures resulting from the energy generated by the magnetoconvection. The coronal heating is assumed to be a result of the dissipation by an unspecified means of a fraction of the Poynting flux entering the corona. The expected signatures in the EUV and soft X-ray bandpasses of the Transition Region and Coronal Explorer and Yohkoh/SXT, respectively, are examined. This ad hoc coupling of the corona to the subphotospheric region results in a dynamical behavior that is consistent with recent observational results. This agreement demonstrates that even simple coupled modeling can lead to diagnostics for investigations of both subphotospheric sunspot structures and coronal heating mechanisms.
机译:我们介绍了完整黑子性质的数值实验的详细结果。这些模型保持高度理想化,但在轴对称层中包含完全非线性的可压缩磁对流,该层将能量驱动到上覆的低β等离子体中。我们调查了一系列参数,在这些参数中,所产生的磁对流显示出孔状和黑子状行为的形成,并评估了磁对流产生的能量所产生的日冕特征。冠冕加热被认为是通过未指定的手段消散了一部分进入电晕的Poynting通量的消散结果。分别检查了过渡区和日冕探测器和Yohkoh / SXT的EUV和软X射线带通中的预期特征。电晕与亚光圈以下区域的这种特殊耦合导致了一种动态行为,该行为与最近的观测结果一致。该协议表明,即使简单的耦合建模也可以导致对亚光层黑子结构和日冕加热机制的研究诊断。

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