A&A 419, 757-762 (2004)
Relation between families of granules, mesogranules and photospheric networkTh. Roudier and R. Muller
Laboratoire d'Astrophysique de Toulouse, Observatoire Midi-Pyrénées, 57 avenue d'Azereix 65008 Tarbes, France
(Received 25 November 2003 / Accepted 13 February 2004)
The analysis of a solar granulation 3-h time sequence obtained at the Pic du Midi Observatory confirms the existence of Trees of Fragmenting Granules (TFG). The TFG lifetime histogram is fitted by a power law with an exponent equal to -1.68. The positive divergences (i.e. mesogranules) come from several families that are visible at different stages of the mesogranule evolution. We observe a good coincidence between the cork (passive scalars) distribution and the TFG boundaries. Thus, TFGs seem to play a role in the diffusion of the magnetic elements on the Sun surface.
Key words: Sun: photosphere -- Sun: granulation
Offprint request: Th. Roudier, firstname.lastname@example.org
© ESO 2004