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Seismology of the Sun and the Distant Stars 2016
Using Today’s Successes to Prepare the Future
Joint TASC2 & KASC9 Workshop – SPACEINN & HELAS8 Conference

Evolution of solar intermediate-scale convection
Jan Langfellner (Max Planck Institute for Solar System Research Göttingen), Laurent Gizon (Max Planck Institute for Solar System Research), Aaron C. Birch (Max Planck Institute for Solar System Research)

We study the near-surface solar convection on the length scale of supergranulation and larger, making use of observations from the Solar Dynamics Observatory (SDO) spacecraft. On a given length scale, the time series of flow maps for the average convective feature shows a complex evolution with an oscillatory component. Such an evolution pattern is also visible in maps of the continuum intensity contrast and of the magnetic field. Finally, we discuss the fingerprint of supergranulation in disk-integrated intensity and radial velocity signals, with stellar applications in mind.

Instituto de Astrofísica e Ciências do Espaço Universidade do Porto Faculdade de Ciências da Universidade de Lisboa
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia