Turbulence in Magnetic Reconnection Jets from Injection to Sub-Ion Scales
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866911767079157760 |
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| author | Richard, L. Sorriso-Valvo, L. Yordanova, E. Graham, D. B. Khotyaintsev, Yu. V. |
| author_facet | Richard, L. Sorriso-Valvo, L. Yordanova, E. Graham, D. B. Khotyaintsev, Yu. V. |
| contents | We investigate turbulence in magnetic reconnection jets in the Earth's magnetotail using data from the Magnetospheric Multiscale spacecraft. We show that signatures of a limited inertial range are observed in many reconnection jets. The observed turbulence develops on the time scale of a few ion gyroperiods, resulting in intermittent multifractal energy cascade from the characteristic scale of the jet down to the ion scales. We show that at sub-ion scales, the fluctuations are close to mono-fractal and predominantly kinetic Alfvén waves. The observed energy transfer rate across the inertial range is $\sim 10^8~\mathrm{J}~\mathrm{kg}^{-1}~\mathrm{s}^{-1}$, which is the largest reported for space plasmas so far. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_08693 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Turbulence in Magnetic Reconnection Jets from Injection to Sub-Ion Scales Richard, L. Sorriso-Valvo, L. Yordanova, E. Graham, D. B. Khotyaintsev, Yu. V. Space Physics Plasma Physics We investigate turbulence in magnetic reconnection jets in the Earth's magnetotail using data from the Magnetospheric Multiscale spacecraft. We show that signatures of a limited inertial range are observed in many reconnection jets. The observed turbulence develops on the time scale of a few ion gyroperiods, resulting in intermittent multifractal energy cascade from the characteristic scale of the jet down to the ion scales. We show that at sub-ion scales, the fluctuations are close to mono-fractal and predominantly kinetic Alfvén waves. The observed energy transfer rate across the inertial range is $\sim 10^8~\mathrm{J}~\mathrm{kg}^{-1}~\mathrm{s}^{-1}$, which is the largest reported for space plasmas so far. |
| title | Turbulence in Magnetic Reconnection Jets from Injection to Sub-Ion Scales |
| topic | Space Physics Plasma Physics |
| url | https://arxiv.org/abs/2303.08693 |