Spatial Structure of Transverse Oscillations in the Interplanetary Magnetic Field

Details Spatial Structure of Transverse Oscillations in the Interplanetary Magnetic Field Spatial Structure of Transverse Oscillations in the Interplanetary Magnetic Field

Aug 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973ap%26ss..23..301c&link_type=abstract

Astrophysics and Space Science, Volume 23, Issue 2, pp.301-314

Astronomy and Astrophysics

Astrophysics

17

Scientific paper

The spatial structure of the transverse oscillations in the interplanetary magnetic field at 1 AU is studied by comparing the simultaneous observations by Explorer 33 and 35 satellites at the maximum separation of about 200R E. The anisotropy characteristics of these oscillations suggest that the oscillations sampled are Alfvén waves. It is found that the size of the region of the wave coherence is related to the solar wind velocity; the size is ˜80R E when the wind velocity is lower than ˜500 km s-1 but becomes less than this when the wind velocity is higher. An inference is made that the solar atmospheric turbulence contributing to the faster solar wind is finer in scale than that associated with the slower wind.

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