Observation of Chaotic fluctuations in Turbulent Plasma
Fuente:
arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | |
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| _version_ | 1866913512215805952 |
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| author | Bandyopadhyay, Riddi Sarlis, Nicolas V. Weygand, James M. Strangeway, Robert J. Torbert, Roy B. Burch, James L. |
| author_facet | Bandyopadhyay, Riddi Sarlis, Nicolas V. Weygand, James M. Strangeway, Robert J. Torbert, Roy B. Burch, James L. |
| contents | Turbulence is a prevalent phenomenon in space and astrophysical plasmas, often characterized by stochastic fluctuations. While laboratory experiments and numerical simulations have revealed chaotic behavior, in-situ observations of turbulent plasmas in natural environments have predominantly shown highly stochastic signatures. Here, we present unprecedented in-situ evidence of chaotic fluctuations in the turbulent solar wind plasma downstream of the Earth's bow shock. By analyzing the relative location of magnetic-field fluctuations on the permutation entropy-complexity plane (C-H plane), we demonstrate that turbulence in the magnetosheath plasma exhibits characteristics of chaotic fluctuations rather than stochastic behavior, diverging from the expected traits of well-developed turbulence. This finding challenges established notions of plasma turbulence and reveals the need for caution when using the magnetosheath as a laboratory for studying plasma turbulence. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_13991 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Observation of Chaotic fluctuations in Turbulent Plasma Bandyopadhyay, Riddi Sarlis, Nicolas V. Weygand, James M. Strangeway, Robert J. Torbert, Roy B. Burch, James L. Space Physics Plasma Physics Turbulence is a prevalent phenomenon in space and astrophysical plasmas, often characterized by stochastic fluctuations. While laboratory experiments and numerical simulations have revealed chaotic behavior, in-situ observations of turbulent plasmas in natural environments have predominantly shown highly stochastic signatures. Here, we present unprecedented in-situ evidence of chaotic fluctuations in the turbulent solar wind plasma downstream of the Earth's bow shock. By analyzing the relative location of magnetic-field fluctuations on the permutation entropy-complexity plane (C-H plane), we demonstrate that turbulence in the magnetosheath plasma exhibits characteristics of chaotic fluctuations rather than stochastic behavior, diverging from the expected traits of well-developed turbulence. This finding challenges established notions of plasma turbulence and reveals the need for caution when using the magnetosheath as a laboratory for studying plasma turbulence. |
| title | Observation of Chaotic fluctuations in Turbulent Plasma |
| topic | Space Physics Plasma Physics |
| url | https://arxiv.org/abs/2409.13991 |