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Calibration and initial results of the HeI D3 line flash spectrum obtained during the 2008 total solar eclipse View all abstracts by submitter

Hui Li   Submitted: 2009-04-22 18:52

The flash spectra in the HeI D3 line are obtained during the 2008 total solar eclipse. We describe the instrument and the calibration of the obtained flash spectrum, and present our initial results in this paper. The average integrated intensity is Eave=8.13 imes1013erg cm-1s-1ster-1 at h=1100 km, which confirms that the HeI D3 emission is negatively correlated with the solar activity. The surface brightness reaches a maximum of Fave=8.25 imes105erg cm-2s-1ster-1 at about happrox1290pm75 km and then decreases exponentially with height when h>1800 km with an exponential index eta=1.63 imes10-8cm-1.

Authors: LI Hui, JI HaiSheng, NI HouKun, ZHANG HaiYing, et al.
Projects: None

Publication Status: Science in China, in press
Last Modified: 2009-04-23 09:11
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