| Issue |
A&A
Volume 702, October 2025
|
|
|---|---|---|
| Article Number | L14 | |
| Number of page(s) | 6 | |
| Section | Letters to the Editor | |
| DOI | https://doi.org/10.1051/0004-6361/202556592 | |
| Published online | 20 October 2025 | |
Letter to the Editor
Complexity-entropy analysis of solar photospheric turbulence: Hinode images of magnetic and Poynting fluxes
1
Institut für Theoretische Physik, Technische Universität Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig, Germany
2
School of Computer and Mathematical Sciences, Adelaide University, Adelaide, SA 5005, Australia
3
Division of Space Geophysics, National Institute for Space Research (INPE), São José dos Campos SP 12227-010, Brazil
4
Departamento de Física, Universidade Estadual de Maringá, Maringá PR 87020-900, Brazil
5
Department of Mathematics, Aeronautics Institute of Technology (ITA), São José dos Campos SP 12228-900, Brazil
6
Faculty of Science and Technology in Engineering, and Institute of Physics, University of Brasília, Brasília DF 70910-900, Brazil
7
Instituto de Astrofísica de Andalucía (IAA-CSIC), Apartado de Correos 3004, E-18080 Granada, Spain
8
Lockheed Martin Solar & Astrophysics Laboratory, 3251 Hanover St, Palo Alto, CA 94304, USA
9
SETI Institute, 339 Bernardo Ave, Suite 200, Mountain View, CA 94043, USA
10
Institute of Mathematics and Statistics (IME), University of São Paulo, São Paulo SP 05508-090, Brazil
⋆ Corresponding author: abraham.chian@gmail.com
Received:
25
July
2025
Accepted:
21
September
2025
The spatiotemporal inhomogeneous-homogeneous transition in the dynamics and structures of solar photospheric turbulence is studied by applying the complexity-entropy analysis to Hinode images of a vortical region of supergranular junctions in the quiet Sun. During a period of supergranular vortex expansion lasting 37.5 min, the spatiotemporal dynamics of the line-of-sight magnetic field and the horizontal electromagnetic energy flux displayed characteristics of an inverse turbulent cascade, as evidenced by the formation of a large magnetic coherent structure via the merger of two small magnetic elements trapped by a long-duration vortex. Consistent with Hinode observations, the magnetic and Poynting fluxes both exhibited an admixture of chaos and stochasticity in the complexity-entropy plane involving a temporal transition from low to high complexity and a temporal transition from high to low entropy during the period of vortex expansion.
Key words: magnetic reconnection / turbulence / Sun: activity / Sun: evolution / Sun: granulation / Sun: photosphere
© The Authors 2025
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
This article is published in open access under the Subscribe to Open model. Subscribe to A&A to support open access publication.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.