Twisted solar active region magnetic fields as drivers of space weather: Observational and theoretical investigations

Journal of Atmospheric and Solar-Terrestrial Physics

Volumn 70, Issue 2-4, 2008, Pages 605-613

  Nandy, Dibyendu ^a   Mackay, Duncan H ^b   Canfield, Richard C ^a   Martens, P C H ^a  

^a MONTANA STATE UNIVERSITY   (United States)

^b UNIVERSITY OF ST ANDREWS   (United Kingdom)

Author keywords

Active regions; CMEs; Flares; Helicity; Solar magnetic fields; Space weather

Indexed keywords

COMPUTER SIMULATION; MAGNETIC FIELDS; MAGNETIC FLUX; METEOROLOGY; SUN;

CORONAL FIELD; FLARING ACTIVITY; HELIOSPHERIC FIELD; SPACE WEATHER;

SOLAR RADIATION;

EID: 38949104034     PISSN: 13646826     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.jastp.2007.08.034     Document Type: Article

References (50)

1. Amari T., Luciani J.F., Mikic Z., and Linker J. Three-dimensional solutions of magnetohydrodynamic equations for prominence magnetic support: twisted magnetic flux rope. Astrophysical Journal Letters 518 (1999) L57-L60
2. Amari T., Luciani J.F., Aly J.J., Mikic Z., and Linker J. Coronal mass ejection: initiation, magnetic helicity, and flux ropes. II. Turbulent diffusion-driven evolution. Astrophysical Journal 595 (2003) 1231-1250
3. Canfield R.C., et al. The morphology of flare phenomena, magnetic fields, and electric currents in active regions. I-Introduction and methods. Astrophysical Journal 411 (1993) 362-369
4. Canfield R.C., Hudson H.S., and McKenzie D.E. Sigmoidal morphology and eruptive solar activity. Geophysical Research Letters 26 (1999) 627-630
5. Einaudi, G., van Hoven, G., 1983. The stability of coronal loops - Finite-length and pressure-profile limits. Solar Physics 88, 163-177.
6. Fan Y. Coronal mass ejections as loss of confinement of kinked magnetic flux ropes. Astrophysical Journal 630 (2005) 543-551
7. Fan Y., and Gibson S.E. Numerical simulations of three-dimensional coronal magnetic fields resulting from the emergence of twisted magnetic flux tubes. Astrophysical Journal 609 (2004) 1123-1133
8. Fan Y., Fisher G.H., and DeLuca E.E. The origin of morphological asymmetries in bipolar active regions. Astrophysical Journal 405 (1993) 390-401
9. Fan Y., Fisher G.H., and McClymont A.N. Dynamics of emerging active region flux loops. Astrophysical Journal 436 (1994) 907-928
10. Fisher G.H., Fan Y., and Howard R.F. Comparisons between theory and observation of active region tilts. Astrophysical Journal 438 (1995) 463-471
11. Hahn M., Gaard S., Jibben P., Canfield R.C., and Nandy D. Spatial relationship between twist in active region magnetic fields and solar flares. Astrophysical Journal 629 (2005) 1135-1140
12. Holder Z.A., Canfield R.C., McMullen R.A., Nandy D., Howard R.F., and Pevtsov A.A. On the tilt and twist of solar active regions. Astrophysical Journal 611 (2004) 1149-1155
13. Hood A.W., and Priest E.R. Kink instability of solar coronal loops as the cause of solar flares. Solar Physics 64 (1979) 303-321
14. Hundhausen A.J. Sizes and locations of coronal mass ejections-SMM observations from 1980 and 1984-1989. Journal of Geophysical Research 98 (1993) 13177-13200
15. Isenberg P.A., Forbes T.G., and Demoulin P. Catastrophic evolution of a force-free flux rope: a model for eruptive flares. Astrophysical Journal 417 (1993) 368-386
16. Leamon R.J., Canfield R.C., Blehm Z., and Pevtsov A.A. What is the role of the kink instability in solar coronal eruptions?. Astrophysical Journal Letters 596 (2003) L255-L258
17. Leighton R.B. Transport of magnetic fields on the Sun. Astrophysical Journal 140 (1964) 1547-1562
18. Leka K.D., Fan Y., and Barnes G. On the availability of sufficient twist in solar active regions to trigger the kink instability. Astrophysical Journal 626 (2005) 1091-1095
19. Lin J., and Forbes T.G. Effects of reconnection on the coronal mass ejection process. Journal of Geophysical Research 105 (2000) 2375-2392
20. Linton M.G., Longcope D.W., and Fisher G.H. The helical kink instability of isolated, twisted magnetic flux rubes. Astrophysical Journal 469 (1996) 954-963
21. Linton M.G., Fisher G.H., Dahlburg R.B., and Fan Y. Relationship of the multimode kink instability to delta-Spot formation. Astrophysical Journal 522 (1999) 1190-1205
22. Low B.C. Coronal mass ejections, magnetic flux ropes, and solar magnetism. Journal of Geophysical Research 106 (2001) 25141-25164
23. Mackay D.H., and van Ballegooijen A.A. A possible solar cycle dependence to the hemispheric pattern of filament magnetic fields?. Astrophysical Journal 560 (2001) 445-455
24. Mackay D.H., and van Ballegooijen A.A. New results in modeling the hemispheric pattern of solar filaments. Astrophysical Journal Letters 621 (2005) L77-L80
25. Mackay D.H., and van Ballegooijen A.A. Models of the large-scale corona. I. Formation, evolution, and liftoff of magnetic flux ropes. Astrophysical Journal 641 (2006) 577-589
26. Mackay D.H., and van Ballegooijen A.A. Models of the large-scale corona. II. Magnetic connectivity and open flux variation. Astrophysical Journal 642 (2006) 1193-1204
27. Mackay D.H., Gaizauskas G., Rickard G.J., and Priest E.R. Force-free and potential models of a filament channel in which a filament forms. Astrophysical Journal 486 (1997) 534-549
28. Martin S.F. Conditions for the formation and maintenance of filaments. Solar Physics 182 (1998) 107-137
29. Melville J.P., Hood A.W., and Priest E.R. The ideal magnetohydrodynamic stability of a line-tied coronal magnetohydrostatic equilibrium. Solar Physics 105 (1986) 291-306
30. Metcalf T.R., Jiao L., McClymont A.N., Canfield R.C., and Uitenbroek H. Is the solar chromospheric magnetic field force-free?. Astrophysical Journal 439 (1995) 474-481
31. Mickey D.L. The haleakala stokes polarimeter. Solar Physics 97 (1985) 223-238
32. Mikić Z., Schnack D.D., and van Hoven G. Dynamical evolution of twisted magnetic flux tubes. I-Equilibrium and linear stability. Astrophysical Journal 361 (1990) 690-700
33. Nandy D. Magnetic helicity and flux tube dynamics in the solar convection zone: comparisons between observation and theory. Journal of Geophysical Research 111 (2006) A12S01
34. Nandy D., Hahn M., Canfield R.C., and Longcope D.W. Detection of a Taylor-like plasma relaxation process in the sun. Astrophysical Journal Letters 597 (2003) L73-L76
35. Pevtsov A.A. Active-region filaments and X-ray sigmoids. Solar Physics 207 (2002) 111-123
36. Pevtsov A.A., Canfield R.C., and Metcalf T.R. Latitudinal variation of helicity of photospheric magnetic fields. Astrophysical Journal 440 (1995) L109-L112
37. Priest E.R. Solar Magneto-hydrodynamics (1982), D. Reidel Pub. Co., Hingham, Dordrecht, Holland, Boston
38. Priest, E.R., 1989. Dynamics and structure of quiescent solar prominences. In: Proceedings of the Workshop, Palma de Mallorca, Spain, November 1987, ASSL vol. 150: Dynamics and Structure of Quiescent Solar Prominences.
39. Priest E.R., and Démoulin P. Three-dimensional magnetic reconnection without null points. 1. Basic theory of magnetic flipping. Journal of Geophysical Research 100 (1995) 23443-23464
40. Régnier S., and Canfield R.C. Evolution of magnetic fields and energetics of flares in active region 8210. Astronomy and Astrophysics 451 (2006) 319-330
41. Russell C.T., Priest E.R., and Lee L.-C. Physics of Magnetic Flux Ropes (1990), American Geophysical Union, Washington, DC
42. Rust D.M., and Kumar A. Evidence for helically kinked magnetic flux ropes in solar eruptions. Astrophysical Journal Letters 464 (1996) L199-L202
43. Sammis I., Tang F., and Zirin H. The dependence of large flare occurrence on the magnetic structure of sunspots. Astrophysical Journal 540 (2000) 583-587
44. Schrijver C.J., DeRosa M.L., Title A.M., and Metcalf T.R. The nonpotentiality of active-region coronae and the dynamics of the photospheric magnetic field. Astrophysical Journal 628 (2005) 501-513
45. Somov B.V. Physical Processes in Solar Flares. Astrophysics and Space Science Library vol. 172 (1992), Kluwer Academic Publishers, Dordrecht p. 257
46. Török T., and Kliem B. Confined and ejective eruptions of kink-unstable flux ropes. Astrophysical Journal Letters 630 (2005) L97-L100
47. Török T., Kliem B., and Titov V.S. Ideal kink instability of a magnetic loop equilibrium. Astronomy and Astrophysics 413 (2004) L27-L30
48. Valori G., Kliem B., and Keppens R. Extrapolation of a nonlinear force-free field containing a highly twisted magnetic loop. Astronomy and Astrophysics 433 (2005) 335-347
49. van Ballegooijen A.A., Priest E.R., and Mackay D.H. Mean field model for the formation of filament channels on the sun. Astrophysical Journal 539 (2000) 983-994
50. Yang W.H., Sturrock P.A., and Antiochos S.K. Force-free magnetic fields-the magneto-frictional method. Astrophysical Journal 309 (1986) 383-391