Physical properties of the quiescent prominence of 5 June 1996, from H alpha observations

The Multichannel Subtractive Double Pass spectrograph (MSDP) is designed to observe line profiles in a 2D field of view with a good spatial and temporal resolution. In order to deal with this unique opportunity, we introduce a new method for fitting the hydrogen H alpha line formed in prominences an...

Full description

Saved in:
Bibliographic Details
Published in:Solar physics 1998, Vol.183 (2), p.323-338
Main Authors: Li, Kejun, Schmieder, B, Malherbe, J-M, Roudier, Th, Wiik, J-E
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The Multichannel Subtractive Double Pass spectrograph (MSDP) is designed to observe line profiles in a 2D field of view with a good spatial and temporal resolution. In order to deal with this unique opportunity, we introduce a new method for fitting the hydrogen H alpha line formed in prominences and deriving various plasma parameters from line profile observations. A quiescent prominence was observed on 5 June 1996, at the Pic du Midi during an international campaign between 09:30 UT and 11:00 UT with the MSDP spectrograph operating in H alpha at the Turret Dome. Using the new fitting method, we show that the temperature, column density of hydrogen atoms and microturbulent velocity of the prominence are respectively about 8500 K, 1.4 x 10 super(1) super(2) cm super(-) super(2) , and 10 to 20 km s super(-) super(1) . The electron density of the prominence is about 1.8 x 10 super(1) super(0) cm super(-) super(3) .
ISSN:0038-0938
DOI:10.1023/A:1005060613653