HIGH-ENERGY COSMIC-RAY RESULTS FROM THE ULYSSES ASCENT TO THE SOLAR SOUTH-POLE

Citation
H. Kunow et al., HIGH-ENERGY COSMIC-RAY RESULTS FROM THE ULYSSES ASCENT TO THE SOLAR SOUTH-POLE, Nuclear physics. B, 1995, pp. 75-86
Citations number
40
Categorie Soggetti
Physics, Nuclear
Journal title
ISSN journal
05503213
Year of publication
1995
Supplement
39A
Pages
75 - 86
Database
ISI
SICI code
0550-3213(1995):<75:HCRFTU>2.0.ZU;2-0
Abstract
The high energy cosmic rays observed with the Kiel Electron Telescope (KET) on board ULYSSES vary with solar activity as well as with helios pheric position. Starting February 1992 ULYSSES climbed to high latitu des with a maximum reached in mid September 1994 at 80 degrees above t he south polar cap. During the time of transition to solar minimum con ditions the observed latitude dependence is much smaller than expected for both positively and negatively charged particles. Latitudinal gra dients of quiet time nuclei are between 0.1 and 0.6%/(o) with similar values for electrons. Surprisingly effects of corotating interaction r egions were observed up into the solar polar region as accelerated low energy ions and as recurrent decreases of high energy ions.