Ulysses-UVCS coordinated observations

Citation
St. Suess et al., Ulysses-UVCS coordinated observations, SPACE SCI R, 87(1-2), 1999, pp. 319-322
Citations number
2
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
SPACE SCIENCE REVIEWS
ISSN journal
0038-6308 → ACNP
Volume
87
Issue
1-2
Year of publication
1999
Pages
319 - 322
Database
ISI
SICI code
0038-6308(1999)87:1-2<319:UCO>2.0.ZU;2-5
Abstract
We present results from SOHO/UVCS measurements of the density and flow spee d of plasma at the Sun and again of the same plasma by Ulysses/SWOOPS in th e solar wind. UVCS made measurements at 3.5 and 4.5 solar radii and Ulysses was at 5.1 AU. Data were taken for nearly 2 weeks in May-June 1997 at 9-10 degrees north of the equator in the streamer belt on the east limb. Densit y and flow speed were compared to see if near Sun characteristics are prese rved in the interplanetary medium. By chance, Ulysses was at the very north ern edge of the streamer belt. Nevertheless, no evidence was found of fast wind or mixing of slow wind with fast wind coming from the northern polar c oronal hole. The morphology of the streamer belt was similar at the beginni ng and end of the observing period, but was markedly different during the m iddle of the period. A corresponding change in density (but not flow speed) was noted at Ulysses.