Stokes-spectro-polarimetry with a two-dimensional diode array

Details Stokes-spectro-polarimetry with a two-dimensional diode array Stokes-spectro-polarimetry with a two-dimensional diode array

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985soph...99..349s&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 99, Sept. 1985, p. 349-363.

Physics

12

Arrays, Diodes, Polarimeters, Spatial Resolution, Stokes Law, Telescopes, Birefringence, Circular Polarization, Line Spectra, On-Line Systems, Sun

Scientific paper

A new apparatus is described which measures the Stokes profiles by means of a two-dimensional 100 x 100 detector array. On-line processing allows the immediate visualization of the profiles corresponding to several spectral lines observed simultaneously along one spatial direction on the solar disk. An improved method for the accurate compensation of the telescopic birefringence with a Bowen compensator is realized. Three different methods for the investigation of fluxtube properties are discussed, based on the analysis of V profiles and illustrated by first measurements with the apparatus. Two characteristics of V profiles; excess polarization and zero crossing wavelength of the V profile show strong spatial variations in plages and network indicating different dynamical conditions for individual fluxtubes.

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