Global structure of the out-of-ecliptic solar wind

Details Global structure of the out-of-ecliptic solar wind Global structure of the out-of-ecliptic solar wind

Mar 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jgra..11003103w&link_type=abstract

Journal of Geophysical Research, Volume 110, Issue A3, CiteID A03103

Astronomy and Astrophysics

Astrophysics

10

Interplanetary Physics: Solar Cycle Variations (7536), Interplanetary Physics: Solar Wind Plasma, Solar Physics, Astrophysics, And Astronomy: Coronal Holes, Solar Physics, Astrophysics, And Astronomy: Magnetic Fields

Scientific paper

We use the observed photospheric field maps and the wind speed observed from Ulysses to study the out-of-ecliptic solar wind. The model calculates the wind speed from the rate of magnetic flux tube expansion factors using a conversion function that is determined by least squares fit of all currently available data from Ulysses. Using the best fit conversion function, we investigate the global solar wind covering a 36-year period from 1968 through 2003. The results complement and expand upon earlier studies conducted with interplanetary scintillation and other in situ spacecraft observations. The rotationally averaged wind speed is a function of two parameters: the heliolatitude and the phase of the solar cycle. The out-of-ecliptic solar wind has a recurrent stable structure, and the average wind speed varies like a sine square of latitude profile spanning more than 5 years during the declining phase and solar minimum in each solar cycle. Ulysses has observed this stable structure in its first polar orbit in 1992-1997. Near solar maximum the structure of the out-of-ecliptic solar wind is in a transient state lasting 2-3 years when the stable structure breaks down during the disappearance and reappearance of the polar coronal holes.

Affiliated with

Also associated with

No associations

Rating

Global structure of the out-of-ecliptic solar wind does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Global structure of the out-of-ecliptic solar wind, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Global structure of the out-of-ecliptic solar wind will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1219471