Atelier CIAS de spectropolarimetrie

Atelier CIAS de spectropolarimétrie

du 18 au 21 décembre 2006
à l'Observatoire de Meudon




Programme de l'atelier

December 18th: Polarised radiative transfer - Theory

14:00 - 15:00 : Mécanismes polarisants en astrophysique (Paletou)
15:00 - 16:00 : Observable effects of a stellar magnetic field (Landstreet)
16:30 - 17:30 : Polarisation induced by scattering: effects of stellar winds, circumstellar envelopes and discs (Harries)
17:30 - 18:30 : Polarisation and magnetic fields in the interstellar medium (Pinte)

December 19th: Polarised radiative transfer - Forward astrophysical diagnostics

09:00 - 09:45 : Measuring and modelling stellar magnetic fields (Landstreet)
09:45 - 10:30 : The magnetic solar atmosphere: multiline diagnostics, line asymmetries, vertical field gradients... (Lopez)
11:00 - 11:45 : Contribution of polarimetry to the study of circumstellar disks (Pinte)
11:45 - 12:30 : Scattering from discs and winds: additional constraints from line spectropolarimetry (Harries)

14:00 - 16:00 : PRACTICAL WORK: computing Zeeman signatures in spectral lines (Landstreet/Lopez) download Landstreet's practical
16:30 - 18:30 : PRACTICAL WORK: computing continuum and line scattering signatures from discs and winds (Pinte/Harries) download Pinte's practical

19:00 : Reception in the Urania room at the "Château"

December 20th: Instrumental polarimetry and data reduction

09:00 - 10:00 : Anisotropic optics (Donati)
10:00 - 11:00 : Spectropolarimétrie solaire (Paletou)
11:30 - 12:30 : Stellar spectropolarimetry (Petit)

14:00 - 16:00 : PRACTICAL WORK: fitting polarised line profiles using PCA (Lopez)
16:30 - 18:30 : PRACTICAL WORK: reducing spectropolarimetry: esprit (Donati)

December 21rst: Inverse modelling of astrophysical spectropolarimetric data

09:00 - 10:00 : Reconstructing the horizontal/vertical structure of the magnetic atmosphere of the sun (Lopez)
10:30 - 12:30 : PRACTICAL WORK: building a zeeman analyser (Paletou) download Paletou's practical

14:00 - 15:00 : Magnetic mapping (Petit)
15:30 - 17:30 : PRACTICAL WORK: fitting magnetic topologies from sets of polarised line profiles (Petit)