Abstract
The formation and eruption of active region filaments is supposed to be caused by the increase of a concentrated current embedded in the active region background magnetic field of an active region according to the theory of Van Tend and Kuperus (1978).
The onset of a filament eruption is due to either changes in the background magnetic field or the increase of the filament current intensity. Both processes can be caused by the emergence of new magnetic flux as well as by the motion of the photospheric footpoints of the magnetic field lines. It is shown that if the background field evolves from a potential field to a nearly force-free field the vertical equilibrium of the current filament is not affected, but large forces are generated along the filament axis. This is identified as the cause of filament activation and the increase in filament turbulence during the flare build-up phase. Depending on the evolution of the background field and the current filament, two different scenarios for flare build-up and filament eruption are distinguished.
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References
Birn, J.: 1980, Proc. CECAM workshop ‘Solar Flares’, held in Orsay, 1979, p.3.
Birn, J., Goldstein, H., and Schindler, K.: 1978, Solar Phys. 57, 81.
Heyvaerts, J., Lasry, J. M., Schatzman, M., and Witomsky, P.: 1978, in E. Jensen, P. Maltby, and F. Q. Orrall (eds.), ‘Physics of Solar Prominences’, IAU Colloq. 44, 174.
Heyvaerts, J., Lasry, J. M., Schatzman, M., and Witomsky, P.: 1979, ‘Blowing Up of Force Free Magnetic Configurations’, preprint, Univ. de Paris-Nord.
Kippenhahn, R. and Schlüter, A.: 1957, Z. Astrophys. 43, 36.
Kopp, R. A. and Pneumann, G. W.: 1976, Solar Phys. 50, 85.
Kuperus, M.: 1980, in M. Dryer and E. Tandberg-Hanssen (eds.), ‘Solar and Interplanetary Dynamics’, IAU Symp. 91, 541.
Kuperus, M. and Raadu, M. A.: 1974, Astron. Astrophys. 31, 189.
Kuperus, M. and Švestka, Z.: 1978, ‘Plein Feux sur la Physique Solaire’, contexte coronal des eruptions solaires, Toulouse CNRS, p. 169.
Lerche, I. and Low, B. C.: 1980, Solar Phys. 66, 285.
Low, B. C.: 1975, Astrophys. J. 197, 251.
Low, B. C.: 1977, Astrophys. J. 212, 234.
Moore, R. L. and LaBonte, B. J.: 1980, in M. Dryer and E. Tandberg-Hansen (eds.), ‘Solar and Interplanetary Dynamics’, IAU Symp. 91, 207.
Rust, D. M. et al.: 1979, in P. A. Sturrock (ed.), Proc. Skylab Workshop on Solar Flares, Chapter VII.
Spicer, D.: 1977, Solar Phys. 53, 305.
Spicer, D.: 1980, Proc. CECAM workshop ‘Phys. of Solar Flares’, held in Orsay, 1979, p. 45.
Syrovatskii, S.: 1978, Solar Phys. 58, 89.
van Tend, W.: 1979, ‘Magnetohydrodynamical and Thermal Processes in Solar Flare Energy Build-Up and Release’, thesis Utrecht, Chapter 7.
van Tend, W. and Kuperus, M.: 1978, Solar Phys. 59, 115.
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This work was done while one of the authors (M.K.) was participating in the CECAM workshop on ‘Physics of Solar Flares” held at Orsay, France, in June 1979.
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Kuperus, M., Van Tend, W. The eruption of active region filaments and its relation to the triggering of a solar flare. Sol Phys 71, 125–139 (1981). https://doi.org/10.1007/BF00153612
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DOI: https://doi.org/10.1007/BF00153612