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

Rachmeler, Laurel ; McKenzie, David E ; Ishikawa, Ryohko ; Kano, Ryouhei ; Bueno, Javier Trujillo ; Kobayashi, Ken ; Song, Donguk ; Yoshida, Masaki ; Auchere, Frederic ; Okamoto, Takenori

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

RP-ID  :  MSFC-E-DAA-TN75969,SH11D-3380

学科分类：空间科学

美国|英语

来源: NASA Technical Reports Server

【 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.