Abstract
The solar prominence radiation spectrum has been simulated in close H and K lines of ionized calcium and hydrogen line Hɛ convenient for processing in CCD observations. Equations of radiation transfer and statistical equilibrium in absence of LTE are solved for a model of homogeneous plane layer, taking into account the partial frequency redistribution for a 20-level continuum model of hydrogen atoms and a 5-level continuum model of calcium ions. The ratio of the integral intensities s = E(H Ca II)/E(Hɛ) and t = E(K)/E(H) Ca II is calculated for a model grid (pressure 0.001 < P < 1.0 dyn/cm2, temperature 4000 < T < 20000 K). The s(T, P) and t(T, P) constructed diagnostic charts for solar prominences are obtained for the first time with allowance for the influence of the Lyβ line on the ionization of Ca II ions.
Similar content being viewed by others
References
Filippov, B.P., Eruptivnye protsessy na Solntse (Eruptive Processes on the Sun), Moscow: FIZMATLIT, 2007.
Gouttebroze, P., Radiative Transfer in Cylindrical Threads with Incident Radiation V. 2D Transfer with 3D Velocity Fields, Astron. Astrophys., 2008, vol. 487, pp. 805–813.
Gouttebroze, P. and Labrosse, N., A Ready-Made Code for the Computation of Prominence NLTE Models, Sol. Phys., 2000, vol. 196, pp. 349–355.
Gouttebroze, P. and Heinzel, P., Calcium to Hydrogen Line Ratios in Solar Prominences, Astron. Astrophys., 2002, vol. 385, pp. 273–280.
Heasley, J.N., Radiative Transfer in Cylindrical Media, J. Quant. Spectrosc. Radiat. Transfer, 1977, vol. 18, pp. 541–547.
Heasley, J.N. and Milkey, R.W., Structure and Spectrum of Quiescent Prominences. III. Application of Theoretical Models in Helium Abundance Determinations, Astrophys. J., 1978, vol. 221, pp. 677–688.
Heinzel, P., Gouttebroze, P., and Vial, J.-C., Formation of the Hydrogen Spectrum in Quiescent Prominences: One-Dimensional Models with Standard Partial Redistribution, Astron. Astrophys., 1987, vol. 183, pp. 351–362.
Kalinin, A.A., Theoretical Balmer Decrements in the Spectra of Rotating Cylindrical Prominences, Konferentsiya stran SNG i Pribaltiki Aktual’nye problemy fiziki solnechnoi i zvezdnoi aktivnosti (Proc. Conference of CIS and Baltic States Actual Problems of Physics of Solar and Stellar Activity), Nizhni Novgorod, 2003, Zaitsev, V.V., Ed., pp. 140–143.
Kuznetsov, V.D., Coronal Mass Ejections, in Plazmennaya geliogeofizika (Plasma Heliogeophysics), Zelenyi, L.M. and Veselovsky, I.S., Eds., Moscow: FIZMATLIT, 2008, vol. 1, pp. 81–98.
Labrosse, N., Heinzel, P., Vial, J.-C., et al., Physics of Solar Prominences: I — Spectral Diagnostic and Non-LTE Modeling, Space Sci. Rev., 2010, vol. 151, pp. 243–332.
Morozhenko, N.N., Spektrofotometricheskie issledovaniya spokoinykh solnechnykh protuberantsev (Spectrophotometric Studies of Quiet Solar Prominences), Kiev: Naukova dumka, 1984.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kalinin, A.A. Hydrogen and calcium lines in solar prominence spectra. Geomagn. Aeron. 52, 1050–1054 (2012). https://doi.org/10.1134/S0016793212080154
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0016793212080154