Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.235..161j&link_type=abstract
In ESA Future Missions in Solar, Heliospheric and Space Plasma Physics p 161-167 (SEE N86-27330 18-12)
Astronomy and Astrophysics
Astronomy
Magnetic Field Configurations, Solar Atmosphere, Solar Magnetic Field, Ultraviolet Astronomy, Electron Density Profiles, Line Spectra, Plasma Heating, Soho Mission, Solar Corona, Solar Flux Density, Spectrum Analysis
Scientific paper
High resolution observations in the ultraviolet spectral region to study the structure and energy balance of the solar atmosphere are discussed. Observations with high spatial and spectral resolution show structure in the quiet and active atmosphere on the 1 arcsec scale. In addition to the all pervasive nonthermal line broadening, such observations show small regions where unusally large line widths and line shifts exist. Their relation to heating processes and mass flux deserves further study. Observations required to investigate the existence of wave heating modes are discussed, emphasizing the importance of simultaneous measurements of line fluxes, electron densities, and line profiles. The SOHO mission provides an excellent opportunity to resolve the issue of coronal heating.
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