Reconnection-driven energy cascade in magnetohydrodynamic turbulence
| العنوان: | Reconnection-driven energy cascade in magnetohydrodynamic turbulence |
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| المؤلفون: | Chuanfei Dong, Liang Wang, Yi-Min Huang, Luca Comisso, Timothy A. Sandstrom, Amitava Bhattacharjee |
| المصدر: | Science Advances. 8 |
| بيانات النشر: | American Association for the Advancement of Science (AAAS), 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | High Energy Astrophysical Phenomena (astro-ph.HE), Multidisciplinary, FOS: Physical sciences, Computational Physics (physics.comp-ph), Astrophysics - Astrophysics of Galaxies, Space Physics (physics.space-ph), Physics - Plasma Physics, Plasma Physics (physics.plasm-ph), Astrophysics - Solar and Stellar Astrophysics, Physics - Space Physics, Astrophysics of Galaxies (astro-ph.GA), Astrophysics - High Energy Astrophysical Phenomena, Physics - Computational Physics, Solar and Stellar Astrophysics (astro-ph.SR) |
| الوصف: | Magnetohydrodynamic turbulence regulates the transfer of energy from large to small scales in many astrophysical systems, including the solar atmosphere. We perform three-dimensional magnetohydrodynamic simulations with unprecedentedly large magnetic Reynolds number to reveal how rapid reconnection of magnetic field lines changes the classical paradigm of the turbulent energy cascade. By breaking elongated current sheets into chains of small magnetic flux ropes (or plasmoids), magnetic reconnection leads to a new range of turbulent energy cascade, where the rate of energy transfer is controlled by the growth rate of the plasmoids. As a consequence, the turbulent energy spectra steepen and attain a spectral index of -2.2 that is accompanied by changes in the anisotropy of turbulence eddies. The omnipresence of plasmoids and their consequences on, e.g., solar coronal heating, can be further explored with current and future spacecraft and telescopes. 32 pages, 8 figures, the world's largest 3D MHD turbulence simulation using a fifth-order scheme |
| تدمد: | 2375-2548 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a8cf8de131ea736949ca207d2f6aa90Test https://doi.org/10.1126/sciadv.abn7627Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....8a8cf8de131ea736949ca207d2f6aa90 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 23752548 |
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