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Characterization of H α Filbril Structure

Characterization of H α Filbril Structure. YUAN YUAN Space Weather Research Lab Oct. 26 th , 2010. Abstract. Introduction Method Results Conclusion. Introduction (1). Motivation

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Characterization of H α Filbril Structure

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  1. Characterization of Hα Filbril Structure YUAN YUAN Space Weather Research Lab Oct. 26th, 2010

  2. Abstract • Introduction • Method • Results • Conclusion

  3. Introduction (1) • Motivation • Compare the chromospheric magnetic fields (found out using NLFF extrapolation) with Hα Filbril Structure to measure the accuracy of NLFF extrapolation method

  4. Introduction (2) The filament structure seen in the extrapolated chromoshpere (a) and in Hα observation (b). Courtesy of Ju Jing et al., (2010).

  5. Method (1) Modeling of Hα Filbril Structure

  6. Method (2) Modeling of Hα Filbril Structure

  7. Method (3)

  8. Method (4)

  9. Method (5)

  10. Result (1)

  11. Result (2)

  12. Result (1)

  13. Conclusion • An Hα FilbrilStructure characterization method is put forward using image gradient information. • The orientation identified on the boundary of filbril structure is more accurate than other region.

  14. Thanks!

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