论文标题

使用Stokes-V Cryo-NIRSP/DKIST观察的使用辩护

Justification of the use of Stokes-V Cryo-NIRSP/DKIST observations for the 3D Reconstruction of the Coronal Magnetic Field

论文作者

Kramar, Maxim, Lin, Haosheng

论文摘要

这项研究为使用Stokes-V Cryo-NIRSP/DKIST观测值的使用辩护,用于冠状磁场的3D重建。预测科学公司产生的太阳电晕的磁性水力动力学(MHD)模型用于合成Fe XIII 1075 nm冠状发射线的光谱测量值,如从地球上观察到的。 Stokes-Q,U数据是通过升级的冠状多通道偏光仪(UCOMP)“获取”半太阳旋转期(约两个星期)的,视场(FOV)高达$ 2 \ r_ \ odot $。 Cryo-NIRSP/DKIST每天每天一次“获取” Stokes-V数据,总FOV等于两个Cryo-NIRSP FOV。我们证明,即使是Cryo-NIRSP FOV覆盖范围的Stokes-V观测值也可以显着改善活性区域的3D冠状磁场重建,而仅基于UCOMP线性极化数据的层析成像重建。

This study presents a justification of the use of Stokes-V Cryo-NIRSP/DKIST observations for the 3D Reconstruction of the Coronal Magnetic Field. A magnetohydrodynamic (MHD) model of the solar corona during solar minimum generated by Predictive Science Inc. was used to synthesize spectropolarimetric measurements of the Fe XIII 1075 nm coronal emission line as observed from the Earth. Stokes-Q,U data is "taken" for half a solar rotation period (about two weeks) by Upgraded Coronal Multichannel Polarimeter (UCoMP) with field of view (FOV) up to $2\ R_\odot$. Stokes-V data is "taken" once a day for two days by Cryo-NIRSP/DKIST with a total FOV equal to the two Cryo-NIRSP FOVs. We demonstrated that even this amount Stokes-V observations with Cryo-NIRSP FOV coverage can remarkably improve the 3D coronal magnetic field reconstruction over an active region compared with tomography reconstruction based only on UCoMP linear polarization data.

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