Corotating particle enhancements out of the ecliptic plane

Details Corotating particle enhancements out of the ecliptic plane Corotating particle enhancements out of the ecliptic plane

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.1561s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 14, p. 1561-1564

Physics

39

Corotation, Ecliptic, Electron Energy, Energy Spectra, Helium, Hydrogen, Ions, Solar Wind, Abundance, Flux (Rate), Phase Shift, Solar Corona, Ulysses Mission

Scientific paper

We have studied greater than 40 keV ion and electron enhancements seen at Ulysses from a series of corotating interaction regions (CIR), from mid-1992 until the end of 1993. The event intensity increased up to latitude 20 deg S; after that the ion flux maxima decreased by approximately 23%/deg while the electron maxima decreased more erratically, and more slowly, during the last half of 1993. After April, 1993, the electron increases lagged the ions by up to four days. The electron energy spectrum hardened both towards the end of the events and as the latitude went above approximately 35 deg. The electron/ion delays and the electron spectral hardening are related to the three-dimensional structure of the reverse shocks at high latitudes. The H/He ratio at approximately 0.4-1.2 MeV/nucleon decreased towards the end of each event; the mean minimum value was 3.5 +/- 0.3, lower than observed in earlier studies of CIR-associated events near the ecliptic plane. The He increases have recurred with a period of 26.0 days. There have been two phase changes: +4.3 days (February 1993) and +2.4 days (August 1993), related to changes in the coronal structure of the source regions for the high speed solar wind streams.

Affiliated with

Also associated with

No associations

Rating

Corotating particle enhancements out of the ecliptic plane 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 Corotating particle enhancements out of the ecliptic plane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Corotating particle enhancements out of the ecliptic plane will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1254997