Magnetodynamic Phenomena in the Solar Atmosphere pp 329-336 | Cite as
The Dynamics of Magnetic Flux Tubes in the Solar Convection Zone
A Study of Active Region Formation
Chapter
Abstract
We describe some of our recent work on the dynamics of flux tubes in the solar convection zone. We focus on two topics, the first being the orientation (“tilt”) of active regions, and how comparisons between observations of tilt and tilts computed from numerical simulations of flux tubes can be used to infer properties of magnetic fields deep in the solar interior. The second topic is an investigation of the kink instability of twisted flux tubes in the solar interior, and its possible relationship with flare-productive δ spot regions.
Keywords
Tilt Angle Flux Tube Convection Zone Sunspot Group Magnetic Flux Tube
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References
- Caligari, P., Moreno-Insertis, F. & Schüssler, M. 1995 “Emerging flux tubes in the solar convection zone. I. Asymmetry, tilt and emergence latitude”, Ap. J 441, 886.ADSCrossRefGoogle Scholar
- Choudhuri, A.R. 1989, “The evolution of loop structures in the flux rings within the solar convection zone”, Sol. Phys. 123, 217.ADSCrossRefGoogle Scholar
- D’Silva, S. & Choudhuri, A.R. 1993, “A theoretical model for tilts of bipolar magnetic regions”, A & A 272, 621.ADSGoogle Scholar
- Fan, Y., Fisher, G.H. & DeLuca, E.E. 1993 (FFD), “The origin of morphological asymmetries in bipolar active regions”, Ap.J 405, 390.ADSCrossRefGoogle Scholar
- Fan, Y., Fisher, G.H. & McClymont, A.N. 1994 (FFM), “Dynamics of emerging active region flux loops”, Ap. J 436, 907.ADSCrossRefGoogle Scholar
- Fisher, G.H., Fan, Y. & Howard, R.F. 1995 (FFH), “Comparisons between theory and observations of active region tilts”, Ap. J 438, 463.ADSCrossRefGoogle Scholar
- Hale, G.E., Ellerman, S., Nicholson, S.B. k Joy, A.H. 1919, “The magnetic polarity of sunspots”, Ap. J 49, 153.ADSCrossRefGoogle Scholar
- Howard, R., Gilman, P.A. & Gilman, P.I. 1984, “Rotation of the Sun measured from Mount Wilson white-light images”, Ap. J 283, 373.ADSCrossRefGoogle Scholar
- Howard, R.F. 1991b, “Axial tilt angles of sunspot groups”, Sol. Phys. 136, 251.ADSCrossRefGoogle Scholar
- Howard, R.F. 1992 “The rotation of active regions with differing magnetic polarity separation”, Sol. Phys. 142, 233.ADSCrossRefGoogle Scholar
- Kurokawa, H. 1991, “Optical Observations of Flare Productive Flux Emergence”, Lecture Notes in Physics, 387, 39 (Springer: Berlin).Google Scholar
- Leighton, R.B. 1964, “Transport of magnetic fields on the Sun”, Ap. J 140, 1547.ADSMATHCrossRefGoogle Scholar
- Leighton, R.B. 1969, “A magneto-kinematic model of the solar cycle”, Ap. J 156, 1.ADSCrossRefGoogle Scholar
- Leka, K.D., Canfield, R.C., McClymont, A.N., & van Driel-Gesztelyi, L. 1995, “Evidence for Current Carrying Emerging Flux”, Ap. J submitted.Google Scholar
- Linton, M.G., Longcope, D.W., & Fisher, G.H. 1995, “The Helical Kink Instability of Isolated, Twisted Magnetic Flux Tubes”, Ap. J, submitted.Google Scholar
- Longcope, D.W. & Fisher, G.H. 1995 (LF), “The effect of convection zone turbulence on a rising flux tube”, Ap. J accepted for publication.Google Scholar
- Moreno-Insertis, F., Schüssler, M. & Ferriz-Mas, A. 1992, “Storage of magnetic flux tubes in a convective overshoot region”, A & A 264, 686.ADSGoogle Scholar
- Moreno-Insertis, F. 1994, “The magnetic field in the convection zone as a link between the active regions on the surface and the field in the solar interior”, p. 117 in Solar Magnetic Fields, eds. Schüssler, M. & Schmidt, W., Cambridge Univ. Press.Google Scholar
- Schüssler, M., Calgari, P., Ferriz-Maz, A. & Moeron-Insertis, F. 1994, “Instability and eruption of magnetic flux tubes in the solar convection zone”, A & A 281, L69.ADSGoogle Scholar
- Spruit, H.C. 1981, “Motion of magnetic flux tubes in the solar convection zone and chromosphere”, A & A 98, 155.ADSMATHGoogle Scholar
- Tanaka, K. 1991, “Studies on a very flare-active 6 group: Peculiar 6 spot evolution and inferred subsurface magnetic rope structure”, Sol. Phys. 136, 133.ADSCrossRefGoogle Scholar
- Wang, Y.-M. & Sheeley, N.R., Jr. 1989, “Average properties of bipolar magnetic regions during sunspot cycle 21”, Sol. Phys. 124, 81.ADSCrossRefGoogle Scholar
- Wang, Y.-M. & Sheeley, N.R., Jr. 1991, “Magnetic flux transport and the Sun’s dipole moment: new twists to the Bab cock-Leighton model”, Ap. J 375, 761.ADSCrossRefGoogle Scholar
- Zirin, H. 1988, Astrophysics of the Sun, Cambridge Univ. Press.Google Scholar
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© Kluwer Academic Publishers 1996