Contrast of Fine-scale Structures in a Quiet Sun Network Region

Details Contrast of Fine-scale Structures in a Quiet Sun Network Region Contrast of Fine-scale Structures in a Quiet Sun Network Region

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008espm...12.2.35s&link_type=abstract

"12th European Solar Physics Meeting, Freiburg, Germany, held September, 8-12, 2008. Online at http://espm.kis.uni-freiburg.de/,

Physics

Scientific paper

We study the contrast of fine structures (mottles), found in a quiet-Sun network region and close to a filament, observed by the SOHO/SUMER spectrograph. The observations were made during August 29 -- 30, 1996, in several chromospheric, transition-region and coronal EUV lines. The contrasts of the fine-scale structures were obtained in the different spectral lines and compared to find whether they have any dependence on the inclination of the magnetic field lines and the line formation height. Also contributions of the absorption and emissivity blocking to the depression of brightness in these fine-scale structures are studied by comparing the observations in transition-region lines with wavelengths above and below 912 A (the head of the hydrogen Lyman continuum).

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