Abstract
Using data from the SOLWIND coronagraph and photometers aboard HELIOS-A we examine coronal mass ejections from an active region which produced a series of giant post-flare coronal arches. HXIS X-ray observations reveal that in several cases underlying flares did not disrupt these arch structures, but simply revived them, enhancing their temperature, density and brightness. Thus we are curious to know how these quasi-stationary X-ray structures could survive in the corona in spite of recurrent appearances of powerful dynamic flares below them. We have found reliable evidence that two dynamic flares which clearly revived the preexisting giant arch were not associated with any mass ejection. After two other flares, which were associated with mass ejections, the arch might have been newly formed when the ejection was over. In one of these cases, however, the arch had typical characteristics of a revived structure so that it is likely that it survived a powerful mass ejection nearby. In a magnetic configuration of the arch which results from potential-field modelling (Figure 1(b)) such a survival seems possible.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Fárník, F., van Beek, H. F., and Švestka, Z.: 1986, Solar Phys. 104, 321.
Hick, P. and Švestka, Z.: 1987, Solar Phys. 108, 315.
Jackson, B. V.: 1985, Solar Phys. 100, 563.
Jackson, B. V., Rompolt, B., and Švestka, Z.: 1988, Solar Phys. 115, 327.
Jackson, B. V., Howard, R. A., Sheeley, N. R., Jr., Michels, D. J., Koomen, M. J., and Illing, R. M. E.: 1985, J. Geophys. Res. 90, A6, 5075.
Karpen, J. T. and Howard, R. A.: 1987, J. Geophys. Res. 92, 7227.
Kopp, R. A. and Poletto, G.: 1988, Adv. Space Res. (Proc. COSPAR Helsinki) (in press).
Martin, S. F., Švestka, Z., and Bhatnagar, A.: 1989, Solar Phys. (submitted) (Paper MS&B).
McCabe, M. K., Švestka, Z. F., Howard, R. A., Jackson, B. V., and Sheeley, N. R., Jr.: 1986, Solar Phys. 103, 399.
Robinson, R. D.: 1986, Solar Phys. 104, 33.
Sheeley, N. R., Stewart, R. T., Robinson, R. D., Howard, R. A., Koomen, M. J., and Michels, D. J.: 1984, Astrophys. J. 279, 839.
Švestka, Z.: 1984, Solar Phys. 94, 171.
Švestka, Z., Stewart, R., Hoyng, P., Van Tend, W., Acton, L. W., Gabriel, A. H., Rapley, C. G., and 8 co-authors: 1982a, Solar Phys. 75, 305.
Švestka, Z., Dennis, B. R., Pick, M., Raoult, A., Rapley, C. G., Stewart, R. T., and Woodgate, B. E.: 1982b, Solar Phys. 80, 143.
Van Beek, H. F., Hoyng, P., Lafleur, H., and Simnett, G. M.: 1980, Solar Phys. 65, 39.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Švestka, Z.F., Jackson, B.V., Howard, R.A. et al. Giant solar arches and coronal mass ejections in November 1980. Sol Phys 122, 131–143 (1989). https://doi.org/10.1007/BF00162831
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00162831