Projects per year
Abstract
This paper describes a model of electron energization and cyclotron maser emission applicable to astrophysical magnetised collisionless shocks. It is motivated by the work of Begelman, Ergun and Rees [1] who argued that the cyclotron maser instability occurs in localised magnetised collisionless shocks such as those expected in Blazar jets. We report on recent research carried out to investigate electron acceleration at collisionless shocks and maser radiation associated with the accelerated electrons. We describe how electrons accelerated by lower-hybrid waves at collisionless shocks generate cyclotron maser radiation when the accelerated electrons move into regions of stronger magnetic fields. The electrons are accelerated along the magnetic field and magnetically compressed leading to the formation of an electron velocity distribution having a horseshoe shape due to conservation of the electron magnetic moment. Under certain conditions the horseshoe electron velocity distribution function is unstable to the cyclotron maser instability [2,3].
Original language | English |
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Article number | e17 |
Number of pages | 8 |
Journal | High Power Laser Science and Engineering |
Volume | 7 |
DOIs | |
Publication status | Published - 14 Mar 2019 |
Keywords
- laboratory astrophysics
- plasma physics
- particle acceleration
- plasma-wave instabilities
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Dive into the research topics of 'Maser radiation from collisionless shocks: application to astrophysical jets'. Together they form a unique fingerprint.Projects
- 2 Finished
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Parametric Wave Coupling and Non-Linear Mixing in Plasma
Ronald, K., Bingham, R., Eliasson, B., Phelps, A., MacInnes, P., Speirs, D. & Whyte, C.
EPSRC (Engineering and Physical Sciences Research Council)
1/08/17 → 31/07/20
Project: Research
Research output
- 1 Conference contribution book
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Apparatus for investigating non-linear microwave interactions in magnetised plasma
Ronald, K., Phelps, A. D. R., Cairns, R. A., Bingham, R., Eliasson, B., Koepke, M. E., Cross, A. W., Speirs, D. C., Robertson, C. W. & Whyte, C. G., 31 Oct 2018, 45th EPS Conference on Plasma Physics (EPS 2018) . Coda, S., Lapenta, G., Michaut, C., Berndt, J., Mantsinen, M. & Weber, S. (eds.). p. 961-964 4 p.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book
Open AccessFile