UVCS/SOHO Synoptic Observations of the Extended Corona during the Whole Sun Month Campaign

Details UVCS/SOHO Synoptic Observations of the Extended Corona during the Whole Sun Month Campaign UVCS/SOHO Synoptic Observations of the Extended Corona during the Whole Sun Month Campaign

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spd....28.0122s&link_type=abstract

American Astronomical Society, SPD meeting #28, #01.22; Bulletin of the American Astronomical Society, Vol. 29, p.883

Astronomy and Astrophysics

Astrophysics

Scientific paper

Daily synoptic observations were made with UVCS/SOHO during the Whole Sun Month (10 August to 8 September 1996) in order to characterize the large-scale spatial distributions of plasma parameters in the solar corona from 1.5 to 3 solar radii. We use observed line profiles and intensities of H I Lyman alpha and O VI 1032/1037 Angstroms, and white light polarized brightness measurements to derive physical properties of the plasma in the solar wind acceleration region. Line of sight velocity distributions and bulk outflow velocities for neutral hydrogen and for O({5) +}, and electron densities can be derived from these measurements. We show some results from the on-going effort and present some of these data as synoptic maps. The ultimate goal of this work is to produce a data set that can be used in developing empirical models that describe the solar minimum conditions of the extended corona. This work is supported by NASA under Grant NAG5-3192 to the Smithsonian Astrophysical Observatory, by the Italian Space Agency, and by Swiss funding sources.

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