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  The Maximum Entropy Limit of Small-scale Magnetic Field Fluctuations in the Quiet Sun

Gorobets, A. Y., Berdyugina, S. V., Riethmüller, T., Rodríguez, J. B., Solanki, S. K., Barthol, P., et al. (2017). The Maximum Entropy Limit of Small-scale Magnetic Field Fluctuations in the Quiet Sun. The Astrophysical Journal Supplement Series, 233: 5. doi:10.3847/1538-4365/aa8ef8.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-41C7-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-4971-E
Genre: Journal Article

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 Creators:
Gorobets, A. Y., Author
Berdyugina, S. V., Author
Riethmüller, Tino1, Author              
Rodríguez, J. Blanco, Author
Solanki, Sami K.1, Author              
Barthol, Peter1, Author              
Gandorfer, Achim M.1, Author              
Gizon, Laurent2, Author              
Hirzberger, Johann1, Author              
van Noort, Michiel1, Author              
Del Toro Iniesta, J. C., Author
Orozco Suárez, D., Author
Schmidt, W., Author
Martínez Pillet, V., Author
Knölker, M., Author
Affiliations:
1Department Sun and Heliosphere, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832289              
2Department Solar and Stellar Interiors, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832287              

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 Abstract: The observed magnetic field on the solar surface is characterized by a very complex spatial and temporal behavior. Although feature-tracking algorithms have allowed us to deepen our understanding of this behavior, subjectivity plays an important role in the identification and tracking of such features. In this paper, we continue studies of the temporal stochasticity of the magnetic field on the solar surface without relying either on the concept of magnetic features or on subjective assumptions about their identification and interaction. We propose a data analysis method to quantify fluctuations of the line-of-sight magnetic field by means of reducing the temporal field's evolution to the regular Markov process. We build a representative model of fluctuations converging to the unique stationary (equilibrium) distribution in the long time limit with maximum entropy. We obtained different rates of convergence to the equilibrium at fixed noise cutoff for two sets of data. This indicates a strong influence of the data spatial resolution and mixing-polarity fluctuations on the relaxation process. The analysis is applied to observations of magnetic fields of the relatively quiet areas around an active region carried out during the second flight of the Sunrise/IMaX and quiet Sun areas at the disk center from the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory satellite.

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Language(s): eng - English
 Dates: 2018-05-072017
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.3847/1538-4365/aa8ef8
 Degree: -

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Title: The Astrophysical Journal Supplement Series
Source Genre: Journal
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Publ. Info: London : IOP Publishing
Pages: - Volume / Issue: 233 Sequence Number: 5 Start / End Page: - Identifier: ISSN: 0067-0049
CoNE: https://pure.mpg.de/cone/journals/resource/954922828211_1