Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jgr...104.9691g&link_type=abstract
Journal of Geophysical Research, Volume 104, Issue A5, p. 9691-9700
Astronomy and Astrophysics
Astrophysics
64
Solar Physics, Astrophysics, And Astronomy
Scientific paper
We model electron densities of the simplest, most symmetric solar minimum streamer structure observed during the Whole Sun Month (WSM) campaign, using coronal observations of both visible white light and extreme ultraviolet (EUV) emission. Using white light data from the SOHO/LASCO/C2 and HAO/Mauna Loa Mark 3 coronagraphs, we determine electron densities by way of a Van de Hulst inversion. We compare the white light densities to those determined from the density sensitive EUV line ratios of Si IX 350/342 Å observed by the SOHO/coronal diagnostic spectrometer (CDS). Moreover, from the white light density profiles we calculate hydrostatic temperature profiles and compare to temperatures derived from the Si XII/Mg X line ratio. We find the white light and spectral analysis produce consistent density and temperature information.
Bagenal Fran
Biesecker Doug
Bromage Barbara
Del Zanna Giulio
Fludra Andrzej
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