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UN R Ô LE POUR LE TÉLESCOPE THEMIS DANS LA PRÉVISION DES ÉJECTIONS DE MATIÈRE

UN R Ô LE POUR LE TÉLESCOPE THEMIS DANS LA PRÉVISION DES ÉJECTIONS DE MATIÈRE. Véronique BOMMIER LERMA, Observatoire de Meudon V.Bommier@obspm.fr 01 45 07 79 48. PNST, Observatoire de Paris 15 janvier 2008. Éjection d'une protubérance 18 août 1980. http://www.swpc.noaa.gov/.

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UN R Ô LE POUR LE TÉLESCOPE THEMIS DANS LA PRÉVISION DES ÉJECTIONS DE MATIÈRE

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  1. UN RÔLE POUR LE TÉLESCOPE THEMIS DANS LA PRÉVISION DES ÉJECTIONS DE MATIÈRE Véronique BOMMIER LERMA, Observatoire de Meudon V.Bommier@obspm.fr 01 45 07 79 48 PNST, Observatoire de Paris 15 janvier 2008

  2. Éjection d'une protubérance 18 août 1980

  3. http://www.swpc.noaa.gov/

  4. http://www.swpc.noaa.gov/

  5. http://www.swpc.noaa.gov/

  6. – la météo spatiale:du soleil à la terre – la météo:une carte + un code

  7. Les cartes de champ magnétique vectoriel à la surface du soleil: THEMIS

  8. polarimetric analysis I,Q,U,V inversion B,, 2 components atmosphere Observations

  9. polarimetric analysis I,Q,U,V Observations

  10. inversion B,, 2 components atmosphere UNNOFIT Landolfi, M., Landi Degl'Innocenti, E., Arena, P., 1984, Solar Physics 93, 269 • Unno-Rachkowsky analytical solution in a Milne-Eddington atmosphere • Marquardt algorithm to reach the minimum 2 (Harvey et al., 1972, Auer et al., 1977) •  Magneto-optical and damping effects (Landolfi & Landi Degl'Innocenti, 1982)

  11. Vector Magnetic Field maps – THEMIS observations – UNNOFIT inversion 13 September 2005, Delta-Spot, NOAA 10808, courtesy V.Bommier – first map: 7 December 2003, published (Bommier et al., 2007, A&A 464, 323, also UNNOFIT reference) –191 vector maps now visible on the web – 155 in the BASS2000 data basis (2004-2007) (15 are bursts on an AR, 108 are multiline 6302/5250, + PCA inversion in the 6301 line) – 36 in the V. Bommier personal page (2005-2006) (28 in common with BASS2000, but including band assembling for large maps (up to 6x4 arcmin) and anamorphosis correction, 2 are multiline 6301/6302/5250, 1 is multiline 6301/6302/5250/6103) – all obtained in THEMIS/MTR-basic mode – in addition, 53 inverted maps are not yet on the web (2005-2008) (V. Bommier, P. Mein, S. Gosain, G. Yang, ...) – inversion of THEMIS/MTR-basic, THEMIS/MTR-grid and THEMIS/MSDP maps – targets: – sunspots – active regions – filaments and filament channels – quiet sun – our last campaign in November 2007 (10 days, 30 maps at BASS2000) unfortunately lacks of solar activity

  12. UNNOFIT Landolfi, M., Landi Degl'Innocenti, E., Arena, P., 1984, Solar Physics 93, 269 • • Unno-Rachkowsky analytical solution in a Milne-Eddington atmosphere • • Marquardt algorithm to reach the minimum 2 (Harvey et al., 1972, Auer et al., 1977) • •  Magneto-optical and damping effects (Landolfi & Landi Degl'Innocenti, 1982) • • + magnetic filling factor (Bommier et al., 2007) • in the visible wavelength range, for solar surface typical field strengths, • the magnetic filling factor  and the magnetic field strength B effects cannot be separated in Stokes V • only their product B(the "local average magnetic field strength")can be determined UNNOFIT inversion accuracy from input test values, noised at the THEMIS polarimetric accuracy level 1.5x10–3 (input) B >= 45G NETWORK

  13. EXTRAPOLATIONS of THEMIS magnetic field maps – Potential field extrapolation: (from longitudinal magnetograms) 2002  Eibe et al. (2002), Aulanier (2002, MDI magnetogram + THEMIS H), Li et al. (2005), Li et al. (2006) – Linear force free field extrapolation (from longitudinal magnetograms, often THEMIS inserted in MDI) 2004  Berlicki et al. (2004), Schmieder et al. (2006a,b), Schmieder et al. (2007) Dudik et al. (2008) – Non-linear force free field extrapolation (from vector magnetograms, needs the ambiguity solution) 2008  Li et al. (2007, THEMIS longitudinal + HUAIROU vector), Canou et al. (stage M2 2008; 2009, submitted) THEMIS pixel: 0.5 arcsec up to 2007, 0.2 arcsec since 2007 (new cameras)

  14. NLFFF EXTRAPOLATION : Evidence of a Twisted Flux Rope in a pre-eruptive structure from Canou, A., Amari, T., Bommier, V., Schmieder, B., Aulanier , G., & Li, H.: 2009, ApJL (submitted) (code: XTRAPOL, Amari et al., 2006) AR 10808, THEMIS vector magnetic field map (with solved ambiguity) The Twisted Flux Rope (TFR)

  15. ... et le pas de temps courtesy T. Amari, thèse A. Canou (code: METEOSOL, Amari, 1996) Eruption of the Twisted Flux Rope (TFR)

  16. – échéance THEMIS le 25 mai 2009. Renouvellement pas acquis Projet: – les codes sont prêts – passer à une phase d'exploitation – développer les observations et les extrapolations systématiques – en vue de roder le moteur de prévision – travail "en amont" de la prévision proprement dite – appel à idées pour la structuration de ce projet

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