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Modelling of 2D radiative transfer in quiescent prominences

Modelling of 2D radiative transfer in quiescent prominences. Structure of the presentation. Modelling of prominences. Grid of models. Contribution functions. Results and analyses. Conclusion. Two dimensional Kippenhahn-Schlüter model. Two dimensional Kippenhahn-Schlüter model.

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Modelling of 2D radiative transfer in quiescent prominences

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  1. Modelling of 2D radiative transfer in quiescent prominences

  2. Structure of the presentation • Modelling of prominences • Grid of models • Contribution functions • Results and analyses • Conclusion

  3. Two dimensionalKippenhahn-Schlüter model

  4. Two dimensionalKippenhahn-Schlüter model

  5. Kuperus-Raadu model

  6. 2D radiative transfer equation

  7. Modelling of 2D radiative transfer in quiescent prominences • Heasley a Mihalas (1976) – non-LTE model with inclusion of MHS and radiative transfer • Mihalas et al. (1978) – the first 2D model • Heinzelet al. (1987) – inclusion of PRD • Fontenlaet al. (1996) – multi-threat model • Anzer a Heinzel (1999) – inclusion of PCTR • Heinzel a Anzer (2001) – generalisation of MHS for 2D

  8. 2D models of the quiescent prominences Motivation – the different orientation of the magnetic field lines towards the observer (Heinzel et al. 2001) Model – 12-level Hydrogen atom – MHS equations of 2D K-S type –numerical solution of radiative transfer by ALI method (Auer and Paletou 1994) with usage of SC (Kunasz andAuer1988)

  9. Short Characteristics method (SC)

  10. Two-dimensional magnetic dip model

  11. The temperature structure

  12. The density structure The magnetic dip

  13. Grid of models Constant parameters

  14. The geometrical shape of the prominence threats of each model

  15. The dependence of profiles on magnetic field orientation

  16. Contribution functions

  17. Contribution functions – A1 Lb

  18. Conclusion • Multi-threat model • Inclusion of the velocity field • Creation of 3D code • Comparison of synthetic profiles with observed profiles on SOHO

  19. Who says that Solar Physics is boring ?

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