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Paper: Solar Wind Characteristics during the Current Solar Minimum (2007–2009): STEREO PLASTIC Observations
Volume: 428, SOHO-23: Understanding a Peculiar Solar Minimum
Page: 275
Authors: Galvin, A. B.; Popecki, M.; Simunac, K.; Kistler, L.; Ellis, L.; Farrugia, C.
Abstract: We present solar wind trends observed by STEREO-A PLASTIC during Carrington Rotations 2053–2090 (February 2007 to December 2009) in relation to the current solar cycle conditions. The solar wind speed, mass number, and iron average charge state all showed a decline in the latter half of the survey period, during the time of minimal sunspot area, a retreat of the polar coronal holes (but with occasional isolated coronal holes) and a flattening of the neutral line.
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