Skip to main content
SpringerLink
Log in

Spectral analysis of Hα, Hβ, and Hγ lines of a white-light flare (3B/X6.1) on October 27, 1991

  • Published:
Solar Physics Aims and scope Submit manuscript

Abstract

We have analyzed time series of Hα, Hβ, and Hγ line profiles taken from a 3B/X6.1 flare which occurred on October 27, 1991 in active region NOAA 6891. Each set of the spectra was taken simultaneously for the first 10 min of the flare event with a low and non-uniform time resolution of 10–40 s. A total of 22 sets of Hα, Hβ, and Hγ were scanned by a PDS with absolute intensity calibration to derive the dynamics and energetics of material in the flare region. Our results are as follows: (1) The Balmer line emitting region is accelerated downward to about 50 km s-1 for the first 50 s and then is decelerated to about 10 km s-1 for the next 150 s. (2) The radial velocity peak precedes the Balmer line intensity peak by about 40 s. (3) The total energy radiated from these Balmer lines is estimated to be 4.9 × 1029 erg.

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

Access this article

Log in via an institution

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

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Beckers, J. M., Bridges, C. A., and Gilliam, L. B.: 1976, A High Resolution Spectal Atlas of the Solar Irradiance from 380 to 700 Nanometers, Air Force Geophys. Lab. U.S.A.

    Google Scholar 

  • Canfield, R. C. and Gayley, K. G.: 1987, Astrophys J. 322, 999.

    Google Scholar 

  • Canfield, R. C., Kiplinger, A. L., Penn, M. J., and Wülser, J. -P.: 1990, Astrophys. J. 363, 318.

    Google Scholar 

  • Chen, J., Huang, Y, and Liu, Z.: 1994, Solar Phys. 150, 179.

    Google Scholar 

  • de la Beaujardière, J.-R, Kiplinger, A. L., and Canfield, R. C.: 1992, Astrophys. J. 401, 761.

    Google Scholar 

  • Ding, M., Fang, C., and Okamoto, T.: 1993, Chinese Astron. Astrophys. 17/4, 413.

    Google Scholar 

  • Donati-Falchi, A., Falciani, R., and Smaldone, L. A.: 1984, Astron. Astrophys. 131, 256.

    Google Scholar 

  • Huang, Z., Ma, L., Fang, C., and Hu, J.: 1993, Chinese Astron. Astrophys. 17/3, 291.

    Google Scholar 

  • Ichimoto, K. and Kurokawa, H.: 1984, Solar Phys. 93, 105.

    Google Scholar 

  • Ji, G. P., Kurokawa, H., Fang, C., and Huang, Y R.: 1994, Solar Phys. 149, 195.

    Google Scholar 

  • Kämpfer, N. and Magun, A.: 1983, Astrophys. J. 274, 910.

    Google Scholar 

  • Labs, D. and Neckel, H.: 1970, Solar Phys. 15, 79.

    Google Scholar 

  • Neidig, D. F.: 1989, Solar Phys. 121, 261.

    Google Scholar 

  • Schoolman, S. A. and Ganz, E. D.: 1981, Solar Phys. 70, 363.

    Google Scholar 

  • Švestka, Z.: 1976, Solar Flares, D. Reidel Publ. Co., Dordrecht, Holland.

    Google Scholar 

  • Tang, F.: 1983, Solar Phys. 83, 15.

    Google Scholar 

  • Wülser, J.-P.: 1987, Solar Phys. 114, 115.

    Google Scholar 

  • Wülser, J.-P. and Marti, H.: 1989, Astrophys. J. 341, 1088.

    Google Scholar 

  • Zarro, D. M. and Canfield, R. C.: 1989, Astrophys. J. 338, L33.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Astronomy Department, Seoul National University, 151-742, Seoul, Korea

    S. W. Lee & H. S. Yun

  2. Department of Astronomy, Nanjing University, 210093, Nanjing, China

    J. Hu & C. Fang

  3. Beijing Astronomical Observatory, 100080, Beijing, China

    J. L. Wang

Authors
  1. S. W. Lee
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. H. S. Yun
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. J. Hu
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. C. Fang
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. J. L. Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Lee, S.W., Yun, H.S., Hu, J. et al. Spectral analysis of Hα, Hβ, and Hγ lines of a white-light flare (3B/X6.1) on October 27, 1991. Sol Phys 163, 361–370 (1996). https://doi.org/10.1007/BF00148007

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00148007

Keywords

Search

Navigation