Tearing Instability in Alfvén and Kinetic‐Alfvén Turbulence
Recently, it has been realized that magnetic plasma turbulence and magnetic field reconnection are inherently related phenomena. Turbulent fluctuations generate regions of sheared magnetic field that become unstable to the tearing instability and reconnection, thus modifying turbulence at the corres...
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| Format: | Article |
| Language: | English |
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American Geophysical Union (AGU)
2021
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| Online Access: | https://hdl.handle.net/1721.1/133045 |
| _version_ | 1810997116979380224 |
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| author | Boldyrev, Stanislav Gomes Loureiro, Nuno F |
| author2 | Massachusetts Institute of Technology. Plasma Science and Fusion Center |
| author_facet | Massachusetts Institute of Technology. Plasma Science and Fusion Center Boldyrev, Stanislav Gomes Loureiro, Nuno F |
| author_sort | Boldyrev, Stanislav |
| collection | MIT |
| description | Recently, it has been realized that magnetic plasma turbulence and magnetic field reconnection are inherently related phenomena. Turbulent fluctuations generate regions of sheared magnetic field that become unstable to the tearing instability and reconnection, thus modifying turbulence at the corresponding scales. In this contribution, we give a brief review of some recent results on tearing-mediated magnetic turbulence. We illustrate the main ideas of this rapidly developing field of study by concentrating on two important examples—magnetohydrodynamic Alfvén turbulence and small-scale kinetic-Alfvén turbulence. Due to various potential applications of these phenomena in space physics and astrophysics, we specifically try not to overload the text by heavy analytical derivations but rather present a qualitative discussion accessible to a non-expert in the theories of turbulence and reconnection. |
| first_indexed | 2024-09-23T14:23:57Z |
| format | Article |
| id | mit-1721.1/133045 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:23:57Z |
| publishDate | 2021 |
| publisher | American Geophysical Union (AGU) |
| record_format | dspace |
| spelling | mit-1721.1/1330452022-10-01T21:06:26Z Tearing Instability in Alfvén and Kinetic‐Alfvén Turbulence Boldyrev, Stanislav Gomes Loureiro, Nuno F Massachusetts Institute of Technology. Plasma Science and Fusion Center Recently, it has been realized that magnetic plasma turbulence and magnetic field reconnection are inherently related phenomena. Turbulent fluctuations generate regions of sheared magnetic field that become unstable to the tearing instability and reconnection, thus modifying turbulence at the corresponding scales. In this contribution, we give a brief review of some recent results on tearing-mediated magnetic turbulence. We illustrate the main ideas of this rapidly developing field of study by concentrating on two important examples—magnetohydrodynamic Alfvén turbulence and small-scale kinetic-Alfvén turbulence. Due to various potential applications of these phenomena in space physics and astrophysics, we specifically try not to overload the text by heavy analytical derivations but rather present a qualitative discussion accessible to a non-expert in the theories of turbulence and reconnection. NSF (Awards 1654168, DE-SC0016215) 2021-10-19T14:59:24Z 2021-10-19T14:59:24Z 2020-09 2020-08 2021-10-19T13:44:17Z Article http://purl.org/eprint/type/JournalArticle 2169-9380 2169-9402 https://hdl.handle.net/1721.1/133045 Boldyrev, Stanislav and Nuno F. Loureiro. "Tearing instability in Alfvén and kinetic-Alfvén turbulence. " Journal of Geophysical Research: Space Physics 125, 9 (September 2020): e2020JA028185. ©2020 American Geophysical Union en http://dx.doi.org/10.1029/2020ja028185 Journal of Geophysical Research: Space Physics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Geophysical Union (AGU) Prof. Gomes Loureiro |
| spellingShingle | Boldyrev, Stanislav Gomes Loureiro, Nuno F Tearing Instability in Alfvén and Kinetic‐Alfvén Turbulence |
| title | Tearing Instability in Alfvén and Kinetic‐Alfvén Turbulence |
| title_full | Tearing Instability in Alfvén and Kinetic‐Alfvén Turbulence |
| title_fullStr | Tearing Instability in Alfvén and Kinetic‐Alfvén Turbulence |
| title_full_unstemmed | Tearing Instability in Alfvén and Kinetic‐Alfvén Turbulence |
| title_short | Tearing Instability in Alfvén and Kinetic‐Alfvén Turbulence |
| title_sort | tearing instability in alfven and kinetic alfven turbulence |
| url | https://hdl.handle.net/1721.1/133045 |
| work_keys_str_mv | AT boldyrevstanislav tearinginstabilityinalfvenandkineticalfventurbulence AT gomesloureironunof tearinginstabilityinalfvenandkineticalfventurbulence |