Properties of Coronal Hole/Streamer Boundaries and Adjacent Regions as Observed by SPARTAN 201
Abstract
The Spartan 201 flights from 1993 to 1995 provided us with observations in H I Lyman-α of several coronal hole/streamer boundaries and adjacent streamers during the declining phase of the current solar cycle: Analysis of the latitudinal dependence of the line intensities clearly shows that there is a boundary region at the coronal hole/streamer interface where the H I Lyman-α intensity reaches a minimum value. Similar results are also found in UVCS/SOHO observations. We also discuss differences in the coronal hole/streamer boundaries for different types of streamers and their changes over the three year period of Spartan 201 observations.
- Publication:
-
Space Science Reviews
- Pub Date:
- January 1999
- DOI:
- 10.1023/A:1005177207810
- Bibcode:
- 1999SSRv...87..277M