Skip to main content
Log in

The lyman alpha line in solar prominences

  • Published:
Solar Physics Aims and scope Submit manuscript

Abstract

We present simplified models for the region where Lα is formed, in the boundary between prominences and corona. The models were calculated by solving the radiation transfer in the line and the energy equation considering conductive flux. We calculate the absolute intensities and profiles of the Lα line given by the models, and compare them with observed values. From the comparison there results that temperature gradient starts increasing in the region of formation of Lyman continuum and reaches a steep gradient in the region where the central core of Lα is formed. We find general agreement and we show the influence of the different parameters on models and on the emerging intensities.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  • Auer, L. H. and Mihalas, D.: 1969, Astrophys. J. 158, 641.

    Google Scholar 

  • Athay, R. G.: 1972, Radiation Transport in Spectral Lines, D. Reidel Publ. Co., Dordrecht, Holland.

    Google Scholar 

  • Bonnet, R. M., Bruner, E. C. Jr., Acton, L. W., Brown, W. A., and Decaudin, M.: 1980, Astrophys. J. 237, L47.

    Google Scholar 

  • Burke, P. G., Ormonde, S., and Withaker, W.: 1967, Proc. Phys. Soc. 92, 319.

    Google Scholar 

  • Engvold, O.: 1976, Solar Phys. 49, 283.

    Google Scholar 

  • Fontenla, J. M.: 1979, Solar Phys. 64, 177.

    Google Scholar 

  • Heasley, J. N. and Mihalas, D.: 1976, Astrophys. J. 205, 273.

    Google Scholar 

  • Heasley, J. N. and Milkey, R. W.: 1976, Astrophys. J. 210, 827.

    Google Scholar 

  • Heasley, J. N. and Milkey, R. W.: 1978, Astrophys. J. 221, 677.

    Google Scholar 

  • Kjeldseth Moe, O., Cook, J. W., and Mango, S. A.: 1979, Solar Phys. 61, 319.

    Google Scholar 

  • Lemaire, P., Gouttebroze, P., Vial, J. C., and Artzner, G. E.: 1981, Astron. Astrophys. 103, 160.

    Google Scholar 

  • Machado, M. E., Avrett, E. H., Vernazza, J. E., and Noyes, R. W.: 1980, Astrophys. J. 242, 336.

    Google Scholar 

  • Milkey, R. W., Heasley, J. N., Schmahl, E. J., and Engvold, O.: 1978, in E. Jensen, P. Maltby, and F. Q. Orrall (eds.), ‘Physics of Solar Prominences’, IAU Colloq. 44, p. 53.

  • Orrall, F. Q. and Speer, R. J.: 1974, in R. G. Athay (ed.), Chromospheric Fine Structures, D. Reidel Publ. Co., Dordrecht, Holland.

    Google Scholar 

  • Orrall, F. Q. and Schmahl, E. J.: 1976, Solar Phys. 50, 365.

    Google Scholar 

  • Raymond, J. C., Cox, D. P., and Smith, B. W.: 1976, Astrophys. J. 204, 290.

    Google Scholar 

  • Reeves, E. M., Timothy, J. G., Huber, M. C. E., and Withbroe, G. L.: 1977, Appl. Opt. 16, 849.

    Google Scholar 

  • Rovira, M.: 1980, Ph.D. Thesis, Universidad de Buenos Aires.

  • Schmahl, E. J. and Orrall, F. Q.: 1979, Astrophys. J. 231, L41.

    Google Scholar 

  • Schmahl, E. J., Foukal, P., Huber, M., Noyes, R., Reeves, E., Timothy, J., Vernazza, J., and Withbroe, G.: 1974, Solar Phys. 39, 337.

    Google Scholar 

  • Spitzer, L.: 1962, Physics of Fully Ionized Gases, 2nd ed., Interscience, New York.

    Google Scholar 

  • Tandberg-Hanssen, E.: 1974, Solar Prominences, D. Reidel Publ. Co., Dordrecht, Holland.

    Google Scholar 

  • Vial, J. C.: 1982a., Astrophys. J. 253, 330.

    Google Scholar 

  • Vial, J. C.: 1982b, Astrophys. J. 254, 780.

    Google Scholar 

  • Vial, J. C., Gouttebroze, P., Artzner, G., and Lemaire, P.: 1979, Solar Phys. 61, 39.

    Google Scholar 

  • Vial, J. C., Martres, M. J., and Salm-Platzer, J.: 1981, Solar Phys. 70, 325.

    Google Scholar 

  • Yang, C., Nicholls, R., and Morgan, F.: 1975, Solar Phys. 45, 351.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

c.c. 67 Suc. 28 Buenos Aires 1428, Argentina.

Member of the Carrera del Investigador, Conicet, Argentina.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Fontenla, J.M., Rovira, M. The lyman alpha line in solar prominences. Sol Phys 85, 141–156 (1983). https://doi.org/10.1007/BF00148265

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00148265

Keywords

Navigation