Helioseismology with PICARD

Thierry Corbard (1) , David Salabert (1) , Patrick Boumier (2) , Thierry Appourchaux (2) , Alain Hauchecorne (3) , Patrice Journoud (2) , Arthur Nunge (2) , Bernard Gelly (4) , Jean-François Hochedez (3) , Abdanour Irbah (3) , Mustapha Meftah (3) , Catherine Renaud (1) , Sylvaine Turck-Chièze (5)

1 LAGRANGE - Joseph Louis LAGRANGE
2 IAS - Institut d'astrophysique spatiale
3 STRATO - LATMOS
4 THEMIS - Télescope héliographique pour l'étude du magnétisme et des instabilites solaires
5 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

PICARD is a CNES micro-satellite launched in June 2010 (Thuillier at al. 2006). Its main goal is to measure the solar shape, total and spectral irradiance during the ascending phase of the activity cycle. The SODISM telescope onboard PICARD also allows us to conduct a program for helioseismology in intensity at 535.7 nm (Corbard et al. 2008). One-minute cadence low-resolution full images are available for a so-called medium-$l$ program, and high-resolution images of the limb recorded every 2 minutes are used to study mode amplification near the limb in the perspective of g-mode search. First analyses and results from these two programs are presented here.

Domains: Solar and Stellar Astrophysics [astro-ph.SR]; Solar and Stellar Astrophysics [astro-ph.SR]

Thierry Corbard, David Salabert, Patrick Boumier, Thierry Appourchaux, Alain Hauchecorne, et al.. Helioseismology with PICARD. Journal of Physics: Conference Series, 2013, 440, pp.012025. ⟨10.1088/1742-6596/440/1/012025⟩. ⟨hal-00796969⟩