Center-to-Limb Variation of the Polarization of Mg II H & K Lines as Measured by CLASP2

[摘要] Who cares? Magnetograms in the upper chromosphere are needed for accurate magnetic coronal extrapolations. The CLASP2 sounding rocket took spatially resolved spectropolarimetric data of Mg II h & k in the upper chromosphere, that can be used as a pathfinder to routine magnetograms. This work: Preliminary results of the center-to-limb variation (CLV) of the linear polarization in the quiet sun. We compare the signals to recent theoretical calculations of the expected polarization which include PRD, J-state interference, and magneto-optical effects.

[发布日期] 2019-12-09

[学科分类] 空间科学

[关键词] ASTRONOMICAL OBSERVATORIES;CHROMOSPHERE;CORONAS;EXTRAPOLATION;LINEAR POLARIZATION;LOCAL THERMODYNAMIC EQUILIBRIUM;MAGNETIC SIGNATURES;MAGNETO-OPTICS;POLARIMETERS;SOUNDING ROCKETS;SPECTROSCOPY