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Solar Energetic Particle Events recorded aboard SOHO on December 24, 1996 and on May 6, 1998

This paper is available in a repository.
This paper is available in a repository.

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Abstract

The LION experiment on SOHO (which records protons from 44 keV-6 MeV and electrons from 44 keV-300 keV), and the energetically complementary EPHIN experiment (which measures protons + helium ions to >53 MeV/n and electrons to >5 MeV), each detected many energetic particle events (SEPs) in the early rising phase of Solar Cycle 23 (from ~ July 1996) - a period commonly associated with Coronal Mass Ejections (CMEs). The present paper contains an account of two representative rapid intensity increases recorded simultaneously by LION and EPHIN, each of which was accompanied by a CME and by impulsive type flaring. The SEPs have characteristics typical of both Gradual and Impulsive events and may be described as `Mixed'.