Using the SIT (Suprathermal Ion Telescope) instrument on STEREO-A we have examined the abundance of the rare isotope during the rising activity phase of solar cycle 24 between January 2010 and December 2011. We have identified six solar energetic particle (SEP) events with enormous abundance enhancements of . The events were short lasting, typically ∼ 0.5 - 1 day and most of them occurred in association with high-speed solar wind streams and corotating interaction regions. With one exception the events were not associated with ∼ 100 keV solar electron intensity increases. The events showed also enhanced NeS/O and Fe/O ratios. The solar images indicate that the events were generally associated with the active regions located near a coronal hole.
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Research Article| June 13 2013
-rich SEP events observed by STEREO-A
G. M. Mason;
AIP Conf. Proc. 1539, 139–142 (2013)
R. Bućík, U. Mall, A. Korth, G. M. Mason, R. Gómez-Herrero; -rich SEP events observed by STEREO-A. AIP Conf. Proc. 13 June 2013; 1539 (1): 139–142. https://doi.org/10.1063/1.4811007
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