Search for long term variations of the interplanetary magnetic field |
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Authors: | F Mariani L Diodato G Moreno |
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Institution: | 1. Istituto di Fisica - Università - 67100 L'Aquila, and Labaratorio Plasma Spazio - CNR, 00044, Frascati, Italy 2. Laboratorio Plasma Spazio - CNR, 00044, Frascati, Italy
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Abstract: | A statistical study is made of the long term variations of the interplanetary magnetic field parameters collected in the years 1964 to 1973 by 12 spacecraft (IMP's, Pioneers and HEOS). Although temporal fluctuations are observed on field components and magnitudes no clear solar cycle variation is found. The same conclusion holds for the statistical distributions and variances of these parameters. A search for possible heliographic latitude effects on the field also leads to a negative conclusion. |
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