Weaker solar wind from the polar coronal holes and the whole Sun

Details Weaker solar wind from the polar coronal holes and the whole Sun Weaker solar wind from the polar coronal holes and the whole Sun

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3518103m&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 18, CiteID L18103

Physics

108

Interplanetary Physics: Solar Wind Plasma, Interplanetary Physics: Solar Cycle Variations (7536), Interplanetary Physics: Interplanetary Magnetic Fields, Interplanetary Physics: Heliopause And Solar Wind Termination, Interplanetary Physics: Solar Wind Sources

Scientific paper

Observations of solar wind from both large polar coronal holes (PCHs) during Ulysses' third orbit showed that the fast solar wind was slightly slower, significantly less dense, cooler, and had less mass and momentum flux than during the previous solar minimum (first) orbit. In addition, while much more variable, measurements in the slower, in-ecliptic wind match quantitatively with Ulysses and show essentially identical trends. Thus, these combined observations indicate significant, long-term variations in solar wind output from the entire Sun. The significant, long-term trend to lower dynamic pressures means that the heliosphere has been shrinking and the heliopause must be moving inward toward the Voyager spacecraft. In addition, our observations suggest a significant and global reduction in the mass and energy fed in below the sonic point in the corona. The lower supply of mass and energy may result naturally from a reduction of open magnetic flux during this period.

Affiliated with

Also associated with

No associations

Rating

Weaker solar wind from the polar coronal holes and the whole Sun 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 Weaker solar wind from the polar coronal holes and the whole Sun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weaker solar wind from the polar coronal holes and the whole Sun will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1334473