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Proton phase space densities (0.5eV<Ep<5MeV) at midlatitudes from Ulysses SWICS/HI-SCALE measurements

  • Session 3: Energetic Particles in the Heliosphere
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Abstract

Proton phase space densities in the solar wind frame from suprathermal velocities 10 km s−1 to 30,000 km s−1 (0.5 eV–5 MeV) were derived from combined SWICS and HISCALE measurements when Ulysses was at 5 AU and −24° heliolatitude. The period (19–23 January 1993) encompasses a forward/reverse shock pair (20 January, 0500 UT and 22 January, 0300 UT). Strong evidence is found for shock acceleration of pickup protons from interstellar hydrogen at all energies measured.

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Authors and Affiliations

  1. Dept. Physics and Astronomy, University of Maryland, 20742, College Park, MD

    G. Gloeckler

  2. Applied Physics Laboratory, Johns Hopkins University, 20723, Laurel, MD

    E. C. Roelof

  3. NASA/Goddard Space Flight Center, 20771, Greenbelt, MD

    K. W. Ogilvie

  4. Hughes STX, 20706, Lanham, MD

    D. B. Berdichevsky

Authors
  1. G. Gloeckler
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  2. E. C. Roelof
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  3. K. W. Ogilvie
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  4. D. B. Berdichevsky
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Gloeckler, G., Roelof, E.C., Ogilvie, K.W. et al. Proton phase space densities (0.5eV<Ep<5MeV) at midlatitudes from Ulysses SWICS/HI-SCALE measurements. Space Sci Rev 72, 321–326 (1995). https://doi.org/10.1007/BF00768798

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  • DOI: https://doi.org/10.1007/BF00768798

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