Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008apj...673..621r&link_type=abstract
The Astrophysical Journal, Volume 673, Issue 1, pp. 621-628.
Astronomy and Astrophysics
Astronomy
1
Acceleration Of Particles, Interplanetary Medium, Shock Waves, Sun: Abundances, Sun: Activity, Sun: Coronal Mass Ejections (Cmes)
Scientific paper
The study of particles from the solar wind thermal population up to higher near-relativistic energies provides a tool to analyze and characterize the internal structure of magnetic clouds (MCs). In this work, we analyze the elemental composition of energetic particles at ~1 MeV nucleon-1. Statistically, using a data set of 40 MCs, we find that the relative abundances of the particles inside magnetic clouds are consistent with those found for gradual solar energetic particle events (SEPs). However, there are isolated cases in which flare particles are detected. We present one example of a MC, observed by Ulysses in 2001, that shows characteristics of flare-accelerated energetic particles and signs of flare interaction in the charge state distributions of solar wind ions.
Fränz Markus
Krupp Norbert
Rodriguez Luciano
Woch Joachim
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