Irreversibility and Energy Transfer at Non-MHD Scales in a Magnetospheric Current Disruption Event
Irreversibility and the processes occurring at ion and sub-ion scales are key challenges in understanding energy dissipation in non-collisional space plasmas. Recent advances have significantly improved the characterization of irreversibility and energy transfer across scales in turbulent fluid-like...
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MDPI AG
2025-03-01
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| Series: | Entropy |
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| Online Access: | https://www.mdpi.com/1099-4300/27/3/260 |
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| author | Giuseppe Consolini Paola De Michelis |
| author_facet | Giuseppe Consolini Paola De Michelis |
| author_sort | Giuseppe Consolini |
| collection | DOAJ |
| description | Irreversibility and the processes occurring at ion and sub-ion scales are key challenges in understanding energy dissipation in non-collisional space plasmas. Recent advances have significantly improved the characterization of irreversibility and energy transfer across scales in turbulent fluid-like media, using high-order correlation functions and testing the validity of certain fluctuation relations. In this study, we explore irreversibility at non-MHD scales during a magnetospheric current disruption event. Our approach involves analyzing the asymmetric correlation function, assessing the validity of a fluctuation relation, and investigating delayed coupling between different scales to reveal evidence of a cascading mechanism. The results clearly demonstrate the irreversible nature of fluctuations at ion and sub-ion scales. Additionally, we provide potential evidence for an energy cascading mechanism occurring over short time delays. |
| format | Article |
| id | doaj-art-3a55fddfbb8a4fb8855d3274925693d6 |
| institution | Kabale University |
| issn | 1099-4300 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj-art-3a55fddfbb8a4fb8855d3274925693d62025-08-20T03:43:11ZengMDPI AGEntropy1099-43002025-03-0127326010.3390/e27030260Irreversibility and Energy Transfer at Non-MHD Scales in a Magnetospheric Current Disruption EventGiuseppe Consolini0Paola De Michelis1INAF—Istituto di Astrofisica e Planetologia Spaziali, Via del Fosso del Cavaliere 100, 00133 Roma, ItalyIstituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143 Roma, ItalyIrreversibility and the processes occurring at ion and sub-ion scales are key challenges in understanding energy dissipation in non-collisional space plasmas. Recent advances have significantly improved the characterization of irreversibility and energy transfer across scales in turbulent fluid-like media, using high-order correlation functions and testing the validity of certain fluctuation relations. In this study, we explore irreversibility at non-MHD scales during a magnetospheric current disruption event. Our approach involves analyzing the asymmetric correlation function, assessing the validity of a fluctuation relation, and investigating delayed coupling between different scales to reveal evidence of a cascading mechanism. The results clearly demonstrate the irreversible nature of fluctuations at ion and sub-ion scales. Additionally, we provide potential evidence for an energy cascading mechanism occurring over short time delays.https://www.mdpi.com/1099-4300/27/3/260space plasma turbulenceirreversibilityenergy transfermagnetospheric current disruption |
| spellingShingle | Giuseppe Consolini Paola De Michelis Irreversibility and Energy Transfer at Non-MHD Scales in a Magnetospheric Current Disruption Event Entropy space plasma turbulence irreversibility energy transfer magnetospheric current disruption |
| title | Irreversibility and Energy Transfer at Non-MHD Scales in a Magnetospheric Current Disruption Event |
| title_full | Irreversibility and Energy Transfer at Non-MHD Scales in a Magnetospheric Current Disruption Event |
| title_fullStr | Irreversibility and Energy Transfer at Non-MHD Scales in a Magnetospheric Current Disruption Event |
| title_full_unstemmed | Irreversibility and Energy Transfer at Non-MHD Scales in a Magnetospheric Current Disruption Event |
| title_short | Irreversibility and Energy Transfer at Non-MHD Scales in a Magnetospheric Current Disruption Event |
| title_sort | irreversibility and energy transfer at non mhd scales in a magnetospheric current disruption event |
| topic | space plasma turbulence irreversibility energy transfer magnetospheric current disruption |
| url | https://www.mdpi.com/1099-4300/27/3/260 |
| work_keys_str_mv | AT giuseppeconsolini irreversibilityandenergytransferatnonmhdscalesinamagnetosphericcurrentdisruptionevent AT paolademichelis irreversibilityandenergytransferatnonmhdscalesinamagnetosphericcurrentdisruptionevent |