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Diagnostics of interplanetary and flaring plasmas in impulsive solar energetic particle events

  • Proceedings of the XXX All-Russia Conference on Cosmic Rays
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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Using instruments onboard the ACE and Wind spacecrafts, we study temporal evolution, spectra, and ionization states of Fe in the impulsive solar energetic particle (SEP) events of September 6, 1998 and May 1, 2000. Proton and electron intensities and anisotropies were used to constrain the particle mean free path in interplanetary space. The derived values were used to explain the observed energy and charge spectra of heavy ions. It is concluded that the sharp increase in the average charge of Fe ions in the range from 200 to 600 keV per nucleon observed in both events cannot be explained within the framework of the model of single-temperature source even if the effects of interplanetary propagation are taken into account. At least two acceleration regions with temperatures ∼106 and 107 K should exist in the source.

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Authors and Affiliations

  1. Ioffe Physical-Technical Institute, Russian of Academy of Science, Politekhnicheskaya str. 2, St.-Petersburg, 194021, Russia

    Y. Y. Kartavykh

  2. Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Würzburg, 97074, Germany

    W. Dröge

  3. Max-Planck-Institut für extraterrestrische Physik, Garching, Germany

    B. Klecker

  4. Applied Physics Lab., John Hopkins University, Laurel, MD, 20723, USA

    G. M. Mason

  5. Space Science Center and Department of Physics, University of New Hampshire, Durham, NH, USA

    E. Möbius & M. Popecki

  6. University of California, Berkeley, CA, 94720, USA

    S. Krucker

Authors
  1. Y. Y. Kartavykh
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  2. W. Dröge
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  3. B. Klecker
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  4. G. M. Mason
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  5. E. Möbius
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  6. M. Popecki
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  7. S. Krucker
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Corresponding author

Correspondence to Y. Y. Kartavykh.

Additional information

Original Russian Text © Y.Y. Kartavykh, W. Dröge, B. Klecker, G.M. Mason, E.Möbius, M. Popecki, S. Krucker, 2009, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2009, vol. 73, No. 3, pp. 308–310.

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Kartavykh, Y.Y., Dröge, W., Klecker, B. et al. Diagnostics of interplanetary and flaring plasmas in impulsive solar energetic particle events. Bull. Russ. Acad. Sci. Phys. 73, 291–293 (2009). https://doi.org/10.3103/S1062873809030022

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  • DOI: https://doi.org/10.3103/S1062873809030022

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