The role of Trees of Fragmenting Granules (TFG) in the formation of the solar supergranular pattern from Hinode observations
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866929755760099328 |
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| author | Malherbe, Jean-Marie Roudier, Thierry |
| author_facet | Malherbe, Jean-Marie Roudier, Thierry |
| contents | We present in this paper an exceptional scientific dataset allowing to investigate the structure and evolution of the interior of solar supergranulation cells. Trees of Fragmenting Granules (TFG) and associated flows were evidenced using Local Correlation Tracking techniques (LCT) from a 24 H duration sequence of Hinode (JAXA/NASA) observations. The treatment of the dataset exhibits the evolution of the TFG and shows that their mutual interactions are able to build horizontal flows with longer lifetime than granules (1 to 2 hours) over a scale of 10 arcsec (the mesogranulation). These flows act on the diffusion of the intranetwork magnetic elements and also on the location and shape of the network. Hence, the TFG appear as one of the major elements involved in supergranular formation and evolution. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2503_09161 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The role of Trees of Fragmenting Granules (TFG) in the formation of the solar supergranular pattern from Hinode observations Malherbe, Jean-Marie Roudier, Thierry Solar and Stellar Astrophysics Instrumentation and Methods for Astrophysics We present in this paper an exceptional scientific dataset allowing to investigate the structure and evolution of the interior of solar supergranulation cells. Trees of Fragmenting Granules (TFG) and associated flows were evidenced using Local Correlation Tracking techniques (LCT) from a 24 H duration sequence of Hinode (JAXA/NASA) observations. The treatment of the dataset exhibits the evolution of the TFG and shows that their mutual interactions are able to build horizontal flows with longer lifetime than granules (1 to 2 hours) over a scale of 10 arcsec (the mesogranulation). These flows act on the diffusion of the intranetwork magnetic elements and also on the location and shape of the network. Hence, the TFG appear as one of the major elements involved in supergranular formation and evolution. |
| title | The role of Trees of Fragmenting Granules (TFG) in the formation of the solar supergranular pattern from Hinode observations |
| topic | Solar and Stellar Astrophysics Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2503.09161 |