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    Model of the energization of outer-zone electrons by whistler-mode chorus during the October 9, 1990 geomagnetic storm

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    Authors
    Summers, D.
    Ma, C.
    Meredith, N.P.
    Horne, R.B.
    Thorne, R.M.
    Heynderickx, D.
    Anderson, R.R.
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    Discipline
    Physical sciences
    Subject
    Electron energy levels
    Magnetosphere
    Satellites
    Storms
    Electron energy levels
    Electrons
    Geomagnetism
    Integral equations
    Magnetosphere
    Radiation effects
    Stochastic systems
    Storms
    Magnetic storms
    Geomagnetism
    Atmospherics
    atmospheric electricity
    geomagnetic storm
    magnetosphere
    Electron energy distributions
    Geomagnetic storm
    Inner magnetosphere
    Model kinetic equations
    Stochastic acceleration
    Substorm activity
    Whistler-mode chorus
    Whistler-mode waves
    Audience
    Scientific
    Date
    2002
    Metadata
    Show full item record
    Description
    Relativistic (>1 MeV) 'killer electrons' are frequently generated in the Earth's inner magnetosphere during the recovery phase of a typical magnetic storm. We test the hypothesis that the energization of electrons takes place by means of stochastic gyroresonant interaction between lower-energy (several 100 keV) seed electrons and whistler-mode chorus waves. We develop a model kinetic equation for the electron energy distribution, and utilize both electron and whistler-mode wave data at L = 4 for a typical geomagnetic storm (on October 9, 1990) from instruments carried on the Combined Release and Radiation Effects Satellite (CRRES). Our model solutions are found to match well with the CRRES profiles of the electron flux. We conclude that the mechanism of stochastic acceleration by whistler-mode turbulence is a viable candidate for generating killer electrons, not only for the storm considered, but for similar storms with a several-day recovery phase containing prolonged substorm activity.
    Citation
    Summers, D.; Ma, C.; Meredith, N.P.; Horne, R.B.; Thorne, R.M.; Heynderickx, D.; Anderson, R.R. (2002). Model of the energization of outer-zone electrons by whistler-mode chorus during the October 9, 1990 geomagnetic storm. , Geophysical Research Letters, Vol. 29, Issue 24, A2174, DOI: 10.1029/2002GL016039.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/5195
    doi: http://dx.doi.org/10.1029/2002GL016039
    scopus: 2-s2.0-0038404906
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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