Space Science Reviews

, Volume 151, Issue 4, pp 243–332 | Cite as

Physics of Solar Prominences: I—Spectral Diagnostics and Non-LTE Modelling

  • N. Labrosse
  • P. Heinzel
  • J.-C. Vial
  • T. Kucera
  • S. Parenti
  • S. Gunár
  • B. Schmieder
  • G. Kilper
Article

Abstract

This review paper outlines background information and covers recent advances made via the analysis of spectra and images of prominence plasma and the increased sophistication of non-LTE (i.e. when there is a departure from Local Thermodynamic Equilibrium) radiative transfer models. We first describe the spectral inversion techniques that have been used to infer the plasma parameters important for the general properties of the prominence plasma in both its cool core and the hotter prominence-corona transition region. We also review studies devoted to the observation of bulk motions of the prominence plasma and to the determination of prominence mass. However, a simple inversion of spectroscopic data usually fails when the lines become optically thick at certain wavelengths. Therefore, complex non-LTE models become necessary. We thus present the basics of non-LTE radiative transfer theory and the associated multi-level radiative transfer problems. The main results of one- and two-dimensional models of the prominences and their fine-structures are presented. We then discuss the energy balance in various prominence models. Finally, we outline the outstanding observational and theoretical questions, and the directions for future progress in our understanding of solar prominences.

Keywords

Solar prominences Spectroscopy Radiative transfer Diagnostics Modelling 

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • N. Labrosse
    • 1
  • P. Heinzel
    • 2
  • J.-C. Vial
    • 3
  • T. Kucera
    • 4
  • S. Parenti
    • 5
  • S. Gunár
    • 2
  • B. Schmieder
    • 6
  • G. Kilper
    • 7
  1. 1.Department of Physics and AstronomyUniversity of GlasgowGlasgowUK
  2. 2.Astronomical InstituteAcademy of Sciences of the Czech RepublicOndřejovCzech Republic
  3. 3.Institut d’Astrophysique SpatialeUniversité Paris XI/CNRSOrsay CedexFrance
  4. 4.NASA/GSFCGreenbeltUSA
  5. 5.Observatoire Royal de BelgiqueBruxellesBelgium
  6. 6.Observatoire de ParisLESIAMeudon cedexFrance
  7. 7.Dept. of Physics and AstronomyRice UniversityHoustonUSA

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