Observation of Transition Region Fine Structures with Soho/Sumer
Abstract
We present a preliminary analysis of two quiet Sun transition region areas observed with the SOHO/SUMER spectrometer, using lines from oxygen, nitrogen and silicon. The average quiet Sun physical parameters are studied as a function of line intensity. Systematic variations of line position and width with increasing intensity are found. A large number of small-scale active points have been observed, and preliminary analysis of the physical properties and dynamics of these active features is presented. A jet-like structure, found in an active point, is also investigated and its velocity along the line of sight determined.
- Publication:
-
Space Science Reviews
- Pub Date:
- January 1999
- DOI:
- 10.1023/A:1005160804176
- Bibcode:
- 1999SSRv...87..241L
- Keywords:
-
- UV spectral emission lines;
- solar transition region