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Numerical simulation of solar photospheric jet-like phenomena caused by magnetic reconnection

机译：磁重新连接造成的太阳能拍摄射流现象的数值模拟

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摘要

Jet phenomena with a bright loop in their footpoint, called anemone jets, have been observed in the solar corona and chromosphere. These jets are formed as a consequence of magnetic reconnection, and from the scale universality of magnetohydrodynamics (MHD), it can be expected that anemone jets exist even in the solar photosphere. However, it is not necessarily apparent that jets can be generated as a result of magnetic reconnection in the photosphere, where the magnetic energy is not dominant. Furthermore, MHD waves generated from photospheric jets could contribute to chromospheric heating and spicule formation; however, this hypothesis has not yet been thoroughly investigated. In this study, we perform three-dimensional MHD simulation including gravity with the solar photospheric parameter to investigate anemone jets in the solar photosphere. In the simulation, jet-like structures were induced by magnetic reconnection in the solar photosphere. We determined that these jet-like structures were caused by slow shocks formed by the reconnection and were propagated approximately in the direction of the background magnetic field. We also suggested that MHD waves from the jet-like structures could influence local atmospheric heating and spicule formation.
机译：在日冕和色球层中观察到了在脚底有一个明亮环的喷射现象，称为海葵喷射。这些喷流是磁重联的结果，从磁流体力学（MHD）的普遍性来看，可以预期海葵喷流甚至存在于太阳光球层中。然而，光球中的磁场重联并不一定能产生喷流，因为光球中的磁场能量并不占主导地位。此外，光球喷流产生的MHD波可能有助于色球加热和针状体的形成；然而，这一假设尚未得到彻底的研究。在这项研究中，我们进行了三维MHD模拟，包括重力和太阳光球参数，以研究太阳光球中的海葵喷流。在模拟中，太阳光球中的磁重联诱发了类似喷流的结构。我们确定，这些射流状结构是由重联形成的慢激波引起的，并大致沿背景磁场的方向传播。我们还认为，来自射流状结构的MHD波可能会影响局部大气加热和针状体的形成。

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