Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009soph..260..347r&link_type=abstract
Solar Physics, Volume 260, Issue 2, pp.347-361
Physics
3
Solar Corona, K-Corona, Electron Temperature, Solar Wind, Eclipse Science And Spectrograph
Scientific paper
We conducted an experiment in conjunction with the total solar eclipse of 29 March 2006 in Libya that measured the coronal intensity through two filters centered at 3850 Å and 4100 Å with bandwidths of ≈ 40 Å. The purpose of these measurements was to obtain the intensity ratio through these two filters to determine the electron temperature. The instrument, Imaging Spectrograph of Coronal Electrons (ISCORE), consisted of an eight inch, f/10 Schmidt Cassegrain telescope with a thermoelectrically-cooled CCD camera at the focal plane. Results show electron temperatures of 105 K close to the limb to 3×106 K at 1.3 R &sun;. We describe this novel technique, and we compare our results to other relevant measurements. This technique could be easily implemented on a space-based platform using a coronagraph to produce global maps of the electron temperature of the solar corona.
Cyr Orville Chris St.
Davila Joseph M.
Guhathakurta Madhulika
Hassler Donald M.
Rabin Douglas M.
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