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首页> 外文期刊>The Astrophysical journal >MULTI-SHELL MAGNETIC TWISTERS AS A NEW MECHANISM FOR CORONAL HEATING AND SOLAR WIND ACCELERATION
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MULTI-SHELL MAGNETIC TWISTERS AS A NEW MECHANISM FOR CORONAL HEATING AND SOLAR WIND ACCELERATION

机译:多壳磁扭线作为冠状加热和风速加速的新机制

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We perform numerical simulations of impulsively generated Alfvén waves in an isolated photospheric flux tube?and explore the propagation of these waves along such magnetic structure that extends from the photosphere, where these waves are triggered, to the solar corona, and we analyze resulting magnetic shells. Our model of the solar atmosphere is constructed by adopting the temperature distribution based on the semi-empirical model and specifying the curved magnetic field lines that constitute the magnetic flux tube that is rooted in the solar photosphere. The evolution of the solar atmosphere is described by 3D, ideal MHD equations that are numerically solved by the FLASH code. Our numerical simulations reveal, based on the physical properties of the multi-shell magnetic twisters and the amount of energy and momentum associated with them, that these multi-shell magnetic twisters may be responsible for the observed heating of the lower solar corona and for the formation of solar wind. Moreover, it is likely that the existence of these twisters can be verified by high-resolution observations.
机译:我们在一个孤立的光球通量管中对脉冲产生的Alfvén波进行了数值模拟,并探索了这些波沿着从光球(触发这些光波)延伸到太阳日冕的这种磁性结构的传播,并分析了产生的磁壳。我们的太阳大气模型是通过采用基于半经验模型的温度分布并指定构成根于太阳光球的磁通量管的弯曲磁场线而构建的。太阳大气的演化由3D(理想的MHD方程)描述,该方程由FLASH代码数值求解。我们的数值模拟显示,基于多壳磁旋扭器的物理特性以及与之相关的能量和动量,这些多壳磁旋扭器可能是观测到的下部太阳日冕的加热以及太阳系电晕产生的原因。太阳风的形成。此外,很可能可以通过高分辨率观察来验证这些扭曲器的存在。

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