Shock formation in magnetised electron–positron plasmas: mechanism and timing
The shock formation process in electron–positron pair plasmas is investigated in the presence of an ambient perpendicular magnetic field. In initially unmagnetised plasmas, which are dominated by the Weibel or filamentation instability, the shock formation time is a multiple of the saturation time o...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2016-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/18/10/105002 |
| _version_ | 1797751033185697792 |
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| author | A Stockem Novo A Bret U Sinha |
| author_facet | A Stockem Novo A Bret U Sinha |
| author_sort | A Stockem Novo |
| collection | DOAJ |
| description | The shock formation process in electron–positron pair plasmas is investigated in the presence of an ambient perpendicular magnetic field. In initially unmagnetised plasmas, which are dominated by the Weibel or filamentation instability, the shock formation time is a multiple of the saturation time of the linear instability. While in weakly magnetised plasmas the mechanism is still the same, higher magnetisations induce synchrotron maser modes such that the shock formation is dominated by magnetic reflection. As a consequence the formation times are reduced. The focus is on the detailed picture of the particle kinetics, in which the transition between Weibel and magneto-hydrodynamic shocks can be clearly identified. |
| first_indexed | 2024-03-12T16:42:31Z |
| format | Article |
| id | doaj.art-6d6ac91c2551418c8fa167baf4d405e4 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:42:31Z |
| publishDate | 2016-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-6d6ac91c2551418c8fa167baf4d405e42023-08-08T14:23:57ZengIOP PublishingNew Journal of Physics1367-26302016-01-01181010500210.1088/1367-2630/18/10/105002Shock formation in magnetised electron–positron plasmas: mechanism and timingA Stockem Novo0A Bret1U Sinha2Institut für Theoretische Physik, Lehrstuhl IV: Weltraum- & Astrophysik, Ruhr-Universität , Bochum, GermanyETSI Industriales, Universidad de Castilla-La Mancha , E-13071 Ciudad Real, Spain; Instituto de Investigaciones Energéticas y Aplicaciones Industriales, Campus Universitario de Ciudad Real , E-13071 Ciudad Real, SpainGoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa , Lisboa, PortugalThe shock formation process in electron–positron pair plasmas is investigated in the presence of an ambient perpendicular magnetic field. In initially unmagnetised plasmas, which are dominated by the Weibel or filamentation instability, the shock formation time is a multiple of the saturation time of the linear instability. While in weakly magnetised plasmas the mechanism is still the same, higher magnetisations induce synchrotron maser modes such that the shock formation is dominated by magnetic reflection. As a consequence the formation times are reduced. The focus is on the detailed picture of the particle kinetics, in which the transition between Weibel and magneto-hydrodynamic shocks can be clearly identified.https://doi.org/10.1088/1367-2630/18/10/105002instabilitiesrelativistic processesshock waves |
| spellingShingle | A Stockem Novo A Bret U Sinha Shock formation in magnetised electron–positron plasmas: mechanism and timing New Journal of Physics instabilities relativistic processes shock waves |
| title | Shock formation in magnetised electron–positron plasmas: mechanism and timing |
| title_full | Shock formation in magnetised electron–positron plasmas: mechanism and timing |
| title_fullStr | Shock formation in magnetised electron–positron plasmas: mechanism and timing |
| title_full_unstemmed | Shock formation in magnetised electron–positron plasmas: mechanism and timing |
| title_short | Shock formation in magnetised electron–positron plasmas: mechanism and timing |
| title_sort | shock formation in magnetised electron positron plasmas mechanism and timing |
| topic | instabilities relativistic processes shock waves |
| url | https://doi.org/10.1088/1367-2630/18/10/105002 |
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