Physics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sh32b03r&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SH32B-03
Physics
7509 Corona
Scientific paper
We report on our continuing efforts to refine the technique described by Reginald and Davila (2000) where white-light spectroscopy is used to measure the solar wind velocity and electron temperature globally. This method is complementary to those that have been used to date (e.g., UV and EUV spectral measurements; visible line ratios; interplanetary radio scintillation, and semi-empirical modeling). This paper will concentrate on instrumentation issues, and modeling efforts relevant to the technique are reported elsewhere in this volume. Results from the 1999 total eclipse in Turkey will be shown, and preparations for the 2001 eclipse in Africa will be discussed. A second related technique using passband filters will also be deployed in 2001 for direct comparison to the spectroscopic method. A groundbased coronagraph is under development to extend this technique beyond eclipse opportunities. But the low stray light levels available on a spacebased platform, along with the heritage of coronagraphic techniques, should make this technique a strong candidate for future spaceflight opportunities.
Cyr Orville Chris St.
Davila Jose Manuel
Reginald N.
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