AbstractA new method is developed for solar wind speed measurements based on simultaneous observations of radio wave temporal intensity and frequency fluctuations. An estimate of the solar wind convection velocity is obtained from a combination of the frequency (Doppler) fluctuation spectral power at low fluctuating frequency and the power in the flat part of the intensity scintillation spectra below the Fresnel frequency. This new technique was applied to measurements taken during the Ulysses spacecraft coronal sounding experiment in 1991. Comparison of the speed estimates with earlier ones derived from simultaneous Doppler scintillation measurements at widely-spaced ground stations shows a fairly good agreement.


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    Title :

    Simultaneous observations of radio wave frequency and intensity fluctuations for estimates of solar wind speed


    Contributors:
    Efimov, A.I. (author) / Bird, M.K. (author) / Chashei, I.V. (author) / Samoznaev, L.N. (author)

    Published in:

    Advances in Space Research ; 32 , 4 ; 485-490


    Publication date :

    2003-02-22


    Size :

    6 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English