Skip to main content
Log in

Physical conditions in the corona for a bipolar magnetic region

  • Articles
  • Published:
Solar Physics Aims and scope Submit manuscript

Abstract

We have used the S-056 X-ray data from Skylab to determine quantitative values for the coronal conditions characterizing a new bipolar magnetic region (BMR). In particular, we include: (a) the time variation of the total soft X-ray flux from the BMR as a function of time; (b) the temporal and spatial variation of the temperature and emission measure; (c) the variation with time of thermal energy density; (d) the (calculated) magnetic field configuration and magnetic flux density in the corona; and (e) the temporal variation of the magnetic field energy in the corona. Detailed comparisons are made between the configuration of X-ray features and the magnetic field topology.

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

  • Billings, D.: 1966, A Guide to the Solar Corona, Academic Press, N.Y.

    Google Scholar 

  • Bruzek, A.: 1967, Solar Phys. 2, 451.

    Google Scholar 

  • Dunn, R.: 1971, in Macris (ed.), Physics of the Solar Corona, pp. 114–129.

  • Landini, M., Fossi, M., Krieger, A., and Vaiana, G.: 1975, Solar Phys. 44, 69.

    Google Scholar 

  • Roberts, P.: 1970, Ph. D. Thesis, California Institute of Technology.

  • Underwood, J. and McKenzie, D.: 1978, submitted to Solar Phys.

  • Underwood, J., Milligan, J., deLoach, T., and Hoover, R.: 1977, Appl. Opt. 16, 858.

    Google Scholar 

  • Vaiana, G., Krieger, A., and Timothy, A.: 1973, Solar Phys. 32, 81.

    Google Scholar 

  • Vorpahl, J.: 1973, Solar Phys. 28, 115.

    Google Scholar 

  • Vorpahl, J.: 1975, Bull. Am. Astron. Soc. 7, 346.

    Google Scholar 

  • Wellck, R. and Nakagawa, Y.: 1973, NCAR Technical Note TN/STR-87, Boulder, Colo., U.S.A.

  • Weart, S.: 1970, ‘The Birth and Growth of Sunspot Regions’, Cal. Tech. preprint.

  • Weart, S.: 1971, ‘What Makes Active Regions Grow?’, Big Bear Solar Observatory preprint.

  • Zirin, H.: 1972, Solar Phys. 26, 393.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Vorpahl, J.A. Physical conditions in the corona for a bipolar magnetic region. Sol Phys 57, 297–308 (1978). https://doi.org/10.1007/BF00160103

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00160103

Keywords

Navigation