Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.298..763k&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 298, Issue 3, pp. 763-776.
Astronomy and Astrophysics
Astronomy
8
Line: Profiles, Sun: Atmosphere, Sun: Prominences, Ultraviolet: Stars
Scientific paper
An analysis is described which can derive optical thicknesses and associated quantities from measured intensities and linewidths using convenient expressions for photon escape probabilities and for opacity-broadened line halfwidths. An associated analysis of the effect of observational errors is provided. The analysis treats intensities and linewidths independently so that internal consistency of results can provide a measure of observational accuracy, which is shown here to be a stringent requirement. As examples, first applications are made to SiII lines in a solar prominence and to some high-resolution observations of the solar HeII 303.78-Å resonance line.
Bhatia Anand K.
Kastner Sidney O.
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