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Recurrency and the origin of the vertical component of the interplanetary magnetic field

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Abstract

The autocorrelation functions of the solar wind velocity and of the IMF components as well as of the geomagnetic activity indices are studied for two periods: August–December, 1965 and January–May, 1974. The vertical component of the IMF is shown to exhibit a rather definite recurrency relatively independent of the recurrency of the solar wind velocity.

The daily mean values of the Z-component of the IMF are shown to correlate (ϱ = -0.5) with the intensity of the meridional component of the large scale solar magnetic field with time delay of about 5 days with respect to the latter. This result is interpreted as an evidence for the Z- component of the IMF to be carried away by the solar wind from the Sun.

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Pudovkin, M.I., Ponyavin, D.I. & Chertkov, A.D. Recurrency and the origin of the vertical component of the interplanetary magnetic field. Sol Phys 66, 411–416 (1980). https://doi.org/10.1007/BF00150594

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  • DOI: https://doi.org/10.1007/BF00150594

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