Hierarchy of spatial scale sin UV prominences
Abstract
Ultraviolet spectra of a quiescent prominence observed with theHigh Resolution Telescope and Spectrograph (HRTS) are analyzed. Different techniques lead to greatly different spatial scales for the prominence structures. The UV spectra show strong variations in intensity and Doppler shift on scales larger than 1700 km. Spectroscopic diagnostics employing line intensity ratios indicate the existence of scales between 400 m to some hundred kilometers. We attempt to interpret various aspects of the prominence intensities and velocities with a multiple thread model.
- Publication:
-
Space Science Reviews
- Pub Date:
- October 1994
- DOI:
- 10.1007/BF00777863
- Bibcode:
- 1994SSRv...70..175S
- Keywords:
-
- Sun;
- Prominences;
- UV radiation