Testing the Steady-State Fluctuation Relation in the Solar Photospheric Convection

The turbulent thermal convection on the Sun is an example of an irreversible non-equilibrium phenomenon in a quasi-steady state characterized by a continuous entropy production rate. Here, the statistical features of a proxy of the local entropy production rate, in solar quiet regions at different t...

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Bibliographic Details
Published in:Entropy (Basel, Switzerland) Switzerland), 2020-06, Vol.22 (7), p.716
Main Authors: Viavattene, Giorgio, Consolini, Giuseppe, Giovannelli, Luca, Berrilli, Francesco, Del Moro, Dario, Giannattasio, Fabio, Penza, Valentina, Calchetti, Daniele
Format: Article
Language:English
Subjects:
astrophysical fluid dynamics
convection
fluctuation theorems
non-equilibrium stationary state
photosphere
Sun
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Summary:The turbulent thermal convection on the Sun is an example of an irreversible non-equilibrium phenomenon in a quasi-steady state characterized by a continuous entropy production rate. Here, the statistical features of a proxy of the local entropy production rate, in solar quiet regions at different timescales, are investigated and compared with the symmetry conjecture of the steady-state fluctuation theorem by Gallavotti and Cohen. Our results show that solar turbulent convection satisfies the symmetries predicted by the fluctuation relation of the Gallavotti and Cohen theorem at a local level.
ISSN:1099-4300
1099-4300
DOI:10.3390/e22070716