AbstractThe results of proton energy (tens keV – several MeV) spectrum measurements near geomagnetic equator (L<1.15) at low altitudes (<1000km) are presented. We used data of experiments onboard ACTIVE, SAMPEX, NOAA TIROS-N satellites and SPRUT-VI (MIR station) and cover a time range of about 30 years (including previous measurements). It was found that the kappa-distribution function fits the experimental spectrum with the best correlation coefficient. A comparison of energy spectra of near-equatorial protons and ring-current protons was made. Using the estimation of the life time of near-equatorial protons we explain the difference in spectral indices of radiation belt and near-equatorial proton formation. We conclude that the ring current is the main source of the near-equatorial protons.


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    Titel :

    Energy spectrum of proton flux near geomagnetic equator at low altitudes


    Beteiligte:
    Petrov, A.N. (Autor:in) / Grigoryan, O.R. (Autor:in) / Panasyuk, M.I. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 41 , 8 ; 1269-1273


    Erscheinungsdatum :

    2007-08-03


    Format / Umfang :

    5 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch






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