The Charge-to-Mass Dependence of Solar Energetic Particle Spectral Breaks

Creators: Mewaldt, R. A.; Cohen, C. M. S.; Haggerty, D. K.; Labrador, A. W.; Looper, M. D.; Li, G.; Mason, G. M.; Mazur, M. A.; Popecki, M. A.

Others:: Caballero, R.; D'Olivo, J. C.; Medina-Tanco, G.; Nellen, L.; Sanchez, F. A.; Valdés-Galicia, J. F.

Abstract

Measurements of the energy spectra of SEP events over a broad energy range (~0.1 to 100 MeV/nuc) show that all large SEP events have spectral beaks organized by the charge-to-mass ratio (Q/M) of the ions. In this paper we present preliminary results of a multi-spacecraft study of the Q/M-dependence of spectral breaks in 11 SEP events and investigate whether the deduced Q/M dependence is correlated with other characteristics of the events.

Additional Information

Copyright Universidad Nacional Autónoma de México This work was supported by NASA under NNX06AC21G, NNG04GB55G, NNG04088G, and NAS5-12929. We appreciate the use of GOES data provided by NOAA.

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