Coronal streamer belt asymmetries and seasonal solar wind variations deduced from Wind and Ulysses data

Details Coronal streamer belt asymmetries and seasonal solar wind variations deduced from Wind and Ulysses data Coronal streamer belt asymmetries and seasonal solar wind variations deduced from Wind and Ulysses data

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jgr...102.4673c&link_type=abstract

Journal of Geophysical Research, Volume 102, Issue A3, p. 4673-4680

Physics

31

Interplanetary Physics: Corotating Streams, Interplanetary Physics: Solar Wind Plasma, Interplanetary Physics: Sources Of The Solar Wind, Magnetospheric Physics: Forecasting

Scientific paper

Solar wind measurements from Wind during March 1995 are combined with those from Ulysses' fast latitude scan to construct a map of the streamer belt. On the timescale of coronal change, the map is nearly a snapshot view of solar wind speed contours threaded by the trace of the heliospheric current sheet (HCS) in the +/-30° heliolatitude range. The combined set of HCS crossings agrees remarkably well with the neutral line on the corresponding classical source surface map. The neutral line is displaced slightly southward, with latitudinal excursions ranging from -22° to +17°. In contrast, a line running through the locus of minimum speed, although following the general trend of the neutral line, is confined to lower latitudes and displaced slightly northward, ranging from -4° to +13°. The separation between the minimum speed locus and the neutral line marking the HCS was unexpected. Possible interplanetary and solar origins are discussed. The deduced asymmetries as well as coronal change between December and March were responsible for solar wind variations at Earth that mimicked the previously reported seasonal variation in Wind data and would have masked it had the observations been taken during September equinox.

Affiliated with

Also associated with

No associations

Rating

Coronal streamer belt asymmetries and seasonal solar wind variations deduced from Wind and Ulysses data 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 Coronal streamer belt asymmetries and seasonal solar wind variations deduced from Wind and Ulysses data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coronal streamer belt asymmetries and seasonal solar wind variations deduced from Wind and Ulysses data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-870722