Fully kinetic Biermann battery and associated generation of pressure anisotropy
The dynamical evolution of a fully kinetic, collisionless system with imposed background density and temperature gradients is investigated analytically. The temperature gradient leads to the generation of temperature anisotropy, with the temperature along the gradient becoming larger than that in th...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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American Physical Society
2018
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| Online Access: | http://hdl.handle.net/1721.1/114528 https://orcid.org/0000-0001-9755-6563 |
| _version_ | 1826212493599440896 |
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| author | Schoeffler, K. M. Silva, L. O. 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 Schoeffler, K. M. Silva, L. O. Gomes Loureiro, Nuno F |
| author_sort | Schoeffler, K. M. |
| collection | MIT |
| description | The dynamical evolution of a fully kinetic, collisionless system with imposed background density and temperature gradients is investigated analytically. The temperature gradient leads to the generation of temperature anisotropy, with the temperature along the gradient becoming larger than that in the direction perpendicular to it. This causes the system to become unstable to pressure anisotropy driven instabilities, dominantly to the electron Weibel instability. When both density and temperature gradients are present and nonparallel to each other, we obtain a Biermann-like linear-in-time magnetic field growth. Accompanying particle-in-cell numerical simulations are shown to confirm our analytical results. |
| first_indexed | 2024-09-23T15:22:33Z |
| format | Article |
| id | mit-1721.1/114528 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:22:33Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1145282022-09-29T14:34:00Z Fully kinetic Biermann battery and associated generation of pressure anisotropy Schoeffler, K. M. Silva, L. O. Gomes Loureiro, Nuno F Massachusetts Institute of Technology. Plasma Science and Fusion Center Gomes Loureiro, Nuno F The dynamical evolution of a fully kinetic, collisionless system with imposed background density and temperature gradients is investigated analytically. The temperature gradient leads to the generation of temperature anisotropy, with the temperature along the gradient becoming larger than that in the direction perpendicular to it. This causes the system to become unstable to pressure anisotropy driven instabilities, dominantly to the electron Weibel instability. When both density and temperature gradients are present and nonparallel to each other, we obtain a Biermann-like linear-in-time magnetic field growth. Accompanying particle-in-cell numerical simulations are shown to confirm our analytical results. National Science Foundation (U.S.) (Award 1654168) 2018-04-03T19:24:32Z 2018-04-03T19:24:32Z 2018-03 2017-10 2018-03-26T18:00:15Z Article http://purl.org/eprint/type/JournalArticle 2470-0045 2470-0053 http://hdl.handle.net/1721.1/114528 Schoeffler, K. M. et al. "Fully kinetic Biermann battery and associated generation of pressure anisotropy." Physical Review E 97, 3 (March 2018): 033204 © 2018 American Physical Society https://orcid.org/0000-0001-9755-6563 en http://dx.doi.org/10.1103/PhysRevE.97.033204 Physical Review E 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. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Schoeffler, K. M. Silva, L. O. Gomes Loureiro, Nuno F Fully kinetic Biermann battery and associated generation of pressure anisotropy |
| title | Fully kinetic Biermann battery and associated generation of pressure anisotropy |
| title_full | Fully kinetic Biermann battery and associated generation of pressure anisotropy |
| title_fullStr | Fully kinetic Biermann battery and associated generation of pressure anisotropy |
| title_full_unstemmed | Fully kinetic Biermann battery and associated generation of pressure anisotropy |
| title_short | Fully kinetic Biermann battery and associated generation of pressure anisotropy |
| title_sort | fully kinetic biermann battery and associated generation of pressure anisotropy |
| url | http://hdl.handle.net/1721.1/114528 https://orcid.org/0000-0001-9755-6563 |
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