Physics – Plasma Physics
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3519101i&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 19, CiteID L19101
Physics
Plasma Physics
24
Interplanetary Physics: Solar Wind Plasma, Interplanetary Physics: Solar Cycle Variations (7536), Solar Physics, Astrophysics, And Astronomy: Corona, Solar Physics, Astrophysics, And Astronomy: Coronal Holes, Space Plasma Physics: Instruments And Techniques
Scientific paper
We present radio observations of Ulysses' third fast latitude scan near the 2007 solar activity minimum of cycle 23. We deduce in situ measurements of the electron density and temperature using the method of quasi-thermal noise spectroscopy. We study the large-scale properties of the fast solar wind coming from polar coronal holes and compare our results to those obtained during Ulysses' first fast scan in 1994-1995 near the minimum of cycle 22. The fast solar wind in both hemispheres is less dense and cooler by about 19% and 13% respectively, as compared to the last solar minimum.
Hoang Sang
Issautier Karine
Le Chat G.
Macdowall Robert J.
McComas David John
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