- Conference date: 19–23 March 2012
- Location: Palm Springs, CA, USA
We have extended our prior survey of Corotation Interaction Region (CIR) heavy ion abundances and spectra to include the recent solar minimum and return of solar activity starting in 2010. During this new survey period, we find that the CIR spectra and low energy intensities show similar ranges of values to more active periods; however, above a few MeV/nucleon the intensities were much lower. We find during active periods the heavy ion abundances are significantly enhanced compared to solar minimum, and the Fe/O ratio varies by a factor of ∼6, much more than the solar wind. These observations add to the evidence that CIR major heavy ion species are accelerated suprathermals, not bulk solar wind.
- Solar wind
- Solar activity
- Solar activity cycles
- Solar energetic particles
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