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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.