Coronal Magnetic Field Measurements
作者： H. Lin , J. R. Kuhn , R. Coulter
DOI: 10.1086/425217
关键词: Nanoflares 、 Coronal plane 、 Coronal loop 、 Physics 、 Astrophysics 、 Astronomy 、 Corona 、 Stellar magnetic field 、 Chromosphere 、 Coronal radiative losses 、 Zeeman effect
摘要: A long-standing solar problem has been to measure the coronal magnetic field. We believe it determines structure and dynamics from upper chromosphere out into heliospheric environment. It is only recently that Zeeman splitting observations of infrared emission lines have successfully used deduce flux density. Here we extend this technique report first results a novel magnetometer uses an off-axis reflecting coronagraph optical fiber-bundle imaging spectropolarimeter. determine line-of-sight density transverse field orientation in two-dimensional map with sensitivity about 1 G 20'' spatial resolution after 70 minutes integration. These full-Stokes spectropolarimetric measurements forbidden Fe XIII 1075 nm line reveal 100'' above active region 4 G.
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