Solar Extreme Events of 2003:
Fundamental Science and Applied Aspects

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A series of short duration (~1-3 hours) energetic ion bursts observed by ACE (~1 AU) and Ulysses (~5.25 AU) on days 25-27, November 2003.
Anagnostopoulos G., Louri I., Marhavilas P., Sarris E.,

A series of short duration (~1-3 hours) enhancement in ion fluxes above the background of a great solar particle event was observed on days 25-27 in November 2003 by the spacecraft ACE, between Earth and Sun, and by Ulysses at large distances (~5.25 AU), as approaching the ecliptic plane and Jupiter (~2000 RJ). The series of ion enhancements were more pronounced at the position of ACE ( a peak - to - background flux ratio as high as ~100 at ~70 keV), than at Ulysses, where it was just observable. At ACE, the ion flows were detected as strong field aligned beams from the anti-sunward direction. The special characteristics (spectra, composition etc.), the possible relation and the (planetary / interplanetary) origin of the unusual ion flows observed both near Earth and in the deep space are investigated and discussed in this paper by comparing magnetic field observations and energetic particle measurements (EPAM, HI-SCALE) obtained by ACE and Ulysses





Skobeltsyn Institute of Nuclear Physics, Moscow State University, 2004