Plasma diagnostic of a solar prominence from hydrogen and helium resonance lines

Labrosse, N. , Vial, J.-C. and Gouttebroze, P. (2006) Plasma diagnostic of a solar prominence from hydrogen and helium resonance lines. In: Barret, D., Casoli, F., Lagache, G., Lecavelier, A. and Pagani, L. (eds.) SF2A-2006: Proceedings of the Annual Meeting of the French Society of Astronomy and Astrophysics. French Society of Astronomy and Astrophysics: Paris, France, pp. 549-550.

Abstract

We present the first comparison of profiles of H et He resonance lines observed by SUMER with theoretical profiles computed with our non-LTE radiative transfer code. We use the H I Lyman-beta, H I Lyman-epsilon, and He I 584 A lines. Our code allows us to obtain the plasma parameters in prominences in conjunction with a multi-line, multi-element set of observations. The plasma temperature in the prominence core is ~ 8600 K and the pressure is 0.03 dyn/cm². The Ly-beta line is formed in a higher temperature region (more than 11000 K).

• Item Type: Book Sections
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Labrosse, Dr Nicolas
• Authors: Labrosse, N., Vial, J.-C., and Gouttebroze, P.
• Subjects: Q Science > QB Astronomy; Q Science > QC Physics
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Publisher: French Society of Astronomy and Astrophysics