Physics – Plasma Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jgra..107.1452b&link_type=abstract
Journal of Geophysical Research (Space Physics), Volume 107, Issue A12, pp. SSH 7-1, CiteID 1452, DOI 10.1029/2002JA009267
Physics
Plasma Physics
1
Interplanetary Physics: Solar Wind Plasma, Interplanetary Physics: Mhd Waves And Turbulence, Interplanetary Physics: Interplanetary Magnetic Fields, Space Plasma Physics: Turbulence
Scientific paper
Plasma and magnetic field measurements by Ulysses during its first out-of-ecliptic orbit have allowed extensive investigations on the behavior of Alfvénic turbulence in high-latitude solar wind from 1 to 5 AU. Most analyses have shown that the turbulence evolution in high-latitude wind is radial, rather than latitudinal, in nature. However, a recent study, based on magnetic field fluctuations, has suggested that latitudinal effects might play a nonnegligible role. Here we further examine this possibility by using Elsässer's variables, quantities that directly are related to the Alfvénic content of solar wind fluctuations. Our conclusion, supported by a comparison between polar and ecliptic observations, is that latitude does not appear to have an appreciable influence on the turbulence evolution in high-latitude solar wind.
Bavassano Bruno
Bruno Roberto
Pietropaolo Ermanno
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