Re-examination of the October 20, 1989 ESP event

Details Re-examination of the October 20, 1989 ESP event Re-examination of the October 20, 1989 ESP event

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....9.3485l&link_type=abstract

Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int

Physics

1

Scientific paper

The energetic storm particle (ESP) event of October 20, 1989 has often been cited as an example of highenergy (>˜500 MeV) proton acceleration at the arrival of a CME-driven shock at the earth. In this paper we re-examine high-time resolution solar wind, magnetic field, and energetic proton data from the IMP-8 spacecraft. We conclude that the high-energy proton population observed around the shock passage is not a locally shock-accelerated population, but rather a population confined and channeled by a complex magnetic field structure formed in front of the shock.

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