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The Solar Cycle Variability of Solar Energetic Particle Composition

Leske, R. A. and Cohen, C. M. S. and Cummings, A. C. and Mewaldt, R. A. and Stone, E. C. and Wiedenbeck, M. E. and von Rosenvinge, T. T. (2003) The Solar Cycle Variability of Solar Energetic Particle Composition. In: Proceedings of the 28th International Cosmic Ray Conference. Vol.6. International Union of Applied Physics , Tokyo, Japan, pp. 3237-3240. https://resolver.caltech.edu/CaltechAUTHORS:20150401-085647968

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Abstract

Solar particle isotopic composition varies greatly from event to event, apparently due to mass fractionation during particle acceleration and/or transport. We examine whether the amount of this variability changes during the solar cycle and find a strong indication of less isotopic compositional variability at solar maximum than during less active phases. There also seems to be a similar but weaker association using elemental abundances. The underlying cause of the variability and reasons why it might change over the solar cycle are yet to be determined.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://adsabs.harvard.edu/abs/2003ICRC....6.3237LADSArticle
ORCID:
AuthorORCID
Leske, R. A.0000-0002-0156-2414
Cohen, C. M. S.0000-0002-0978-8127
Cummings, A. C.0000-0002-3840-7696
Mewaldt, R. A.0000-0003-2178-9111
Stone, E. C.0000-0002-2010-5462
Wiedenbeck, M. E.0000-0002-2825-3128
Additional Information:Copyright Universal Academy Press Inc. This work was funded by NASA at Caltech (under grants NAG5-6912 and NAG5-12929), JPL, and the Goddard Space Flight Center. HCS tilt angles were obtained from the Wilcox Solar Observatory web site.
Group:Space Radiation Laboratory
Funders:
Funding AgencyGrant Number
NASANAG5-6912
NASANAG5-12919
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2003-17
Record Number:CaltechAUTHORS:20150401-085647968
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150401-085647968
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56268
Collection:CaltechAUTHORS
Deposited By: Deborah Miles
Deposited On:14 Apr 2015 23:24
Last Modified:09 Mar 2020 13:19

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