| Issue |
A&A
Volume 419, Number 2, May IV 2004
|
|
|---|---|---|
| Page(s) | 757 - 762 | |
| Section | The Sun | |
| DOI | https://doi.org/10.1051/0004-6361:20035739 | |
| Published online | 03 May 2004 | |
Relation between families of granules, mesogranules and photospheric network
Laboratoire d'Astrophysique de Toulouse, Observatoire Midi-Pyrénées, 57 avenue d'Azereix 65008 Tarbes, France
Corresponding author: Th. Roudier, roudier@obs-mip.fr
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
© ESO, 2004
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