The role of Trees of Fragmenting Granules (TFG) in the formation of the solar supergranulation: a comparison between simulation and Hinode results

We present an exceptional scientific dataset allowing to investigate the structure and evolution of the interior of the solar supergranulation cells. Trees of Fragmenting Granules (TFG) and associated horizontal flows were evidenced from a 24 H MHD simulation and a 48 H duration sequence of Hinode (JAXA/NASA) observations. The simulation and observations are in agreement and show that the TFG generate horizontal flows with lifetime of 1-2 hours over a scale of 10 arcsec (the mesogranulation). These flows act on the diffusion of the intranetwork magnetic elements and corks migrate towards the cell boundaries. Hence, the TFG appear as one of the major elements involved in supergranular formation and evolution.