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Solar Physics

, Volume 186, Issue 1–2, pp 259–280 | Cite as

Filament channel structures in a Si  iv line related to a 3d magnetic model

  • T.A. Kucera
  • G. Aulanier
  • B. Schmieder
  • N. Mein
  • J.-C. Vial
Article

Abstract

A recent 3D magnetic model of filament support (Aulanier and Démoulin, 1998) has shown that specific morphologies derived from the model, based on SOHO/MDI magnetograms, match quite well with the observations of a filament observed in Hα and Ca ii lines with the German telescope VTT in Tenerife on 25 September 1996 (Aulanier et al., 1998, 1999a). Some predictions of this model concern the filament channel. To continue the comparison of model and data, we have investigated the same filament region observed in ultraviolet by the SOHO spectrometers SUMER and CDS. The elongated EUV fine structures in the filament channel observed in the Si iv 1393.76 Å line by SUMER have similar orientations and locations to features predicted by the model of Aulanier et al. (1999a). These regions are near the bases of field lines which tangentially join to the photosphere in so called 'bald patches' and are parts of large arcades above the filament channel. In addition, we consider the Si iv Doppler shifts in these structures and compare them to what might be expected from the model field structure. Our study also suggests that the filament has a very low opacity in Si iv, lower than that of the O v line observed by CDS.

Keywords

Field Line Doppler Shift Specific Morphology Field Structure Channel Structure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Aly, J. J. and Amari, T.: 1997, Astron. Astrophys. 319, 699.Google Scholar
  2. Aulanier, G. and Démoulin, P.: 1998, Astron. Astrophys. 329, 1125.Google Scholar
  3. Aulanier, G., Démoulin, P., van Driel-Gesztelyi L., Mein P., and DeForest C.: 1998a, Astron. Astrophys. 335, 309.Google Scholar
  4. Aulanier, G, Schmieder, B., Démoulin, P., Mein, N., van Driel, L., Mein, P., and Deforest C.: 1998b, in R. A. Harris, F. Moreno-Insertis, E. R. Priest (eds.), A crossroads for European, Solar and Heliospheric Physics, ESA, SP-417, p. 217.Google Scholar
  5. Aulanier, G., Démoulin, P., Mein, N., van Driel-Gesztelyi, L., Mein, P., and Schmieder, B.: 1999a, Astron. Astrophys. in press.Google Scholar
  6. Aulanier, G., Démoulin, P., Schmieder, B., Fang, C., and Tang, Y. H.: 1999b, Solar Phys. in press.Google Scholar
  7. Billinghurst, M. N., Craig, I. J. D., and Sneyd, A. D.: 1993, Astron. Astrophys. 279, 589.Google Scholar
  8. Bommier V., Landi Degl'Innocenti E., Leroy J. L., and Sahal-Bréchot S.: 1994, Solar Phys. 154, 231.Google Scholar
  9. Brekke, P., Hassler, D. M., and Wilhelm, K: 1998, Solar Phys. 175, 349.Google Scholar
  10. Bungey, T. N., Titov, V. S., and Priest, E. R.: 1996, Astron. Astrophys. 308, 233.Google Scholar
  11. Chae, J. C, Yun, H. S., and Poland, A. T.: 1998, Astrophys. J. Suppl. Ser. 114, 151.Google Scholar
  12. Chiuderi-Drago, F., Engvold, O., and Jensen, E.: 1992, Solar Phys. 139, 47.Google Scholar
  13. Démoulin, P.: 1998, in D. Webb, B. Schmieder, and D. Rust (eds.), 'New Perspectives on Solar Prominences', IAU Colloq. 167; Astron. Soc. Pacific Conf. Ser. 150, 78.Google Scholar
  14. Démoulin, P. and Priest E. R.: 1989, Astron. Astrophys. 214, 360.Google Scholar
  15. Démoulin, P., Priest E. R., and Anzer U.: 1989, Astron. Astrophys. 221, 326.Google Scholar
  16. Démoulin, P., Hénoux, J. C., and Mandrini, C. H.: 1992, Solar Phys. 139, 105.Google Scholar
  17. Démoulin, P., Hénoux, J. C., Priest, E. R., and Mandrini, C. H.: 1996, Astron. Astrophys. 308, 643.Google Scholar
  18. Démoulin, P., Bagalá, L. G., Mandrini, C. H., Hénoux, J. C., and Rovira M. G.: 1997, Astron. Astrophys. 325, 305.Google Scholar
  19. Engvold O.: 1989, E. R. Priest (ed.), Dynamics and Structure of Quiescent Polar Prominences, Kluwer Academic Publishers, Dordrecht, Holland. p. 47.Google Scholar
  20. Engvold, O., Tandberg-Hanssen, E., and Reichmann, E.: 1985, Solar Phys. 96, 35.Google Scholar
  21. Feldman, U., Laming, J. M., Mandelbaum, P, Goldstein, W. H., and Osterheld, A.: 1992, Astrophys. J. Suppl. Ser. 398, 692.Google Scholar
  22. Forbes, T. G. and Acton, L. W.: 1996, Astrophys. J. 459, 330.CrossRefGoogle Scholar
  23. Forbes, T. G. and Malherbe, J. M.: 1986, Astrophys. J. 302, L67.Google Scholar
  24. Harrison, R. A. et al.: 1995, Solar Phys. 162, 233.CrossRefGoogle Scholar
  25. Harrison, R. A. et al.: 1997, Solar Phys. 170, 123.Google Scholar
  26. Karpen J. T., Antiochos S. K., and DeVore C. R.: 1991, Astrophys. J. 382, 327.Google Scholar
  27. Klimchuk, J. A.: 1987, Astrophys. J. 323, 368.Google Scholar
  28. Koutchmy, O. and Koutchmy, S.: 1989, in O. von der Luhe (ed.) Proc. 10th Sacramento Peak Summer Workshop, High Spatial Resolution Solar Observations, NSO, Sunspot, p. 217.Google Scholar
  29. Lemaire, P. et al.: 1997, Solar Phys. 170, 105CrossRefGoogle Scholar
  30. Low, B. C.: 1992, Astrophys. J. 399, 300.CrossRefGoogle Scholar
  31. Low, B. C. and Wolfson, R.: 1988, Astrophys. J. 324, 574.Google Scholar
  32. Malherbe, J. M., Schmieder, B., Simon, G., Mein, P., and Tandberg-Hanssen, E.: 1987, Solar Phys. 112, 233.Google Scholar
  33. Mandrini, C. H., Démoulin, P., Van Driel-Gesztelyi, L., Schmieder, B., Cauzzi, G., and Hofmann, A.: 1996, Solar Phys. 168, 115.Google Scholar
  34. Martin, S. F. and McAllister, A. H.: 1996, in 'Magnetodynamic Phenomena in the Solar Atmosphere', Proc. IAU Colloq. 153, 497.Google Scholar
  35. Martin, S. F., Bilimoria, R., and Tracadas, P. W.: 1994, in R. J. Rutten and C. Schrijvers (eds.), Solar Surface Magnetism, Kluwer Academic Publishers, Dordrecht, Holland, p. 303.Google Scholar
  36. Mein, P.: 1991, Astron. Astrophys. 248, 669.Google Scholar
  37. Mein, P., Schmieder, B., Malherbe, J.-M., Wiik, J. E., Engvold, O., Brekke, P., Zirker, J. B., Poland, A. I., Delaboudinière, J.-P., and Staiger, J.: 1998, in D. Webb B. Schmieder, and D. Rust (eds.), 'New Perspectives on Solar Prominences', IAU Colloq. 167; Publ. Astron. Soc. Pacific 150, 135.Google Scholar
  38. Meyer, J.-P.: 1985, Astrophys. J. Suppl. Ser. 57, 173.Google Scholar
  39. Moran, T.: 1999, in preparation.Google Scholar
  40. Poland, A.: 1990, in V. Ruždjak and E. Tandberg-Hanssen (eds.), Dynamics of Quiescent Prominences, Springer-Verlag, Berlin, Vol. 363, p. 120.Google Scholar
  41. Poland, A. I. and Tandberg-Hanssen, E.: 1983, Solar Phys. 84, 63.CrossRefGoogle Scholar
  42. Schmieder, B.: 1989, in E. R. Priest (ed.), Dynamics and Structure of Quiescent Solar Prominences, Kluwer Academic Publishers, Dordrecht, Holland, p. 15.Google Scholar
  43. Schmieder, B, Malherbe, J. M., Mein, P., and Tandberg-Hanssen, E.: 1984, Astron. Astrophys. 136, 81.Google Scholar
  44. Schmieder B., Forbes, T. G., Malherbe, J. M., and Machado, M. E.: 1987, Astrophys. J. 317, 956.Google Scholar
  45. Schmieder, B., Malherbe, J. M., Simnett G. M., Forbes, T. G., and Tandberg-Hanssen, E.: 1990, Astrophys. J. 356, 720.Google Scholar
  46. Schmieder, B., Aulanier, G., Démoulin, P., van Driel-Gesztelyi, L., Roudier, T., Nitta, N., and Cauzzi, G.: 1997a, Astron. Astrophys. 325, 1213.Google Scholar
  47. Schmieder, B., van Driel-Gesztelyi, L., Wiik, J. E., Kucera, T., Thompson, B., DeForest, C., StCyr, C., and Simnett, G. M.: 1997b, in A. Wilson (ed.), Fifth SOHO Workshop: the Corona and Solar Wind Near Minimum Activity, ESA, SP-404, p. 663.Google Scholar
  48. Titov, V. S., Priest, E. R., and Démoulin, P.: 1993, Astron. Astrophys. 276, 564.Google Scholar
  49. van Driel-Gesztelyi, L. Schmieder, B., Martens, P., Zarro, D., DeForest, C., Thompson, B., Aulanier, G., Démoulin, P., StCyr, C., Burkepile, J., White, O. R., Kucera, T., Nitta, N., Hanaoka, Y., Mein, P., Malherbe, J.-M.: 1997, Annales Geophysicae Supplement, Part III, Space & Planetary Sciences, Supplement III to Volume 16, C918.Google Scholar
  50. van Driel-Gesztelyi, L., Schmieder, B., Aulanier, C., Démoulin, P., Martins, P. C. H., Zarro, D., DeForest, C., Thompson, B., St.Cyr, C., Kucera, T., Burkepile, J. T., White, O. R., Hanaoka, Y., and Nitta, N.: 1998, in D. Webb, B. Schmieder, and D. Rust (eds.), 'New Perspectives on Solar Prominences', IAU Colloq. 167; Astron. Soc. Pacific Conf. Ser. 150, 366.Google Scholar
  51. Vekstein, G. E., Priest, E. R., and Amari, T.: 1991, Astron. Astrophys. 243, 492.Google Scholar
  52. Vesecky, J. F., Antiochos, S. K., and Underwood, J. H.: 1979, Astrophys. J. 233, 987.Google Scholar
  53. Vial, J. C.: 1990, in V. Ruždjak and E. Tandberg-Hanssen (eds.), Dynamics of Quiescent Prominences, Springer-Verlag, Berlin, Vol. 363, p. 106.Google Scholar
  54. Wilhelm, K. et al.: 1995, Solar Phys. 162, 189.CrossRefGoogle Scholar
  55. Wilhelm K. et al.: 1997, Solar Phys. 170, 75.CrossRefGoogle Scholar

Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • T.A. Kucera
    • 1
  • G. Aulanier
    • 2
  • B. Schmieder
    • 2
  • N. Mein
    • 2
  • J.-C. Vial
    • 3
  1. 1.Code 682.3NASA/Goddard Space Flight CenterGreenbeltU.S.A
  2. 2.section Meudon, DASOP, URA 2080 (CNRS)Observatoire de ParisMeudon Principal CedexFrance
  3. 3.Intstitut d'Astrophysique SpatialeUnité mixte CNRS-Université Paris XIOrsay CedexFrance

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