2D radiative modelling of He I spectral lines formed in solar prominences

2007/12/11 by L. Leger, F. Paletou, Leger, L. +1
Computer Science · Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #Ionosphere and magnetosphere dynamics #Solar Radiation and Photovoltaics #Solar and Space Plasma Dynamics

paper · pdf · doi:10.48550/arxiv.0712.1701

openalex publication_date 2007/12/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present preliminary results of 2D radiative modelling of He I lines in solar prominences, using a new numerical code developed by us (Leger, Chevallier and Paletou 2007). It treats self-consistently the radiation transfer and the non-LTE statistical equilibrium of H and, in a second stage, the one of He using a detailed atomic model. Preliminary comparisons with new visible plus near-infrared observations made at high spectral resolution with THeMIS are very satisfactory.

Related

• Spectral Diagnostics of Active Prominences
• The Helium spectrum in erupting solar prominences
• Improved Radiative Transfer Corrections in Helium Emission Lines
• Plasma diagnostic of a solar prominence from hydrogen and helium resonance lines
• Measurements of quiescent prominence spectra - Ca/+/ double-lambda 8542, 8498 and He lambda 4471, Ti/+/ lambda 4468