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Backward wave cyclotron-maser emission in the auroral magnetosphere
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dc.contributor.author | Speirs, D. C. | |
dc.contributor.author | Bingham, R. | |
dc.contributor.author | Cairns, R. A. | |
dc.contributor.author | Vorgul, I. | |
dc.contributor.author | Kellett, B. J. | |
dc.contributor.author | Phelps, A. D. R. | |
dc.contributor.author | Ronald, K. | |
dc.date.accessioned | 2014-11-19T17:01:03Z | |
dc.date.available | 2014-11-19T17:01:03Z | |
dc.date.issued | 2014-10-07 | |
dc.identifier | 157835103 | |
dc.identifier | 25bc82f6-b37f-46c3-8941-8838be03d3cf | |
dc.identifier | 000342797100007 | |
dc.identifier | 84907835192 | |
dc.identifier | 000342797100007 | |
dc.identifier.citation | Speirs , D C , Bingham , R , Cairns , R A , Vorgul , I , Kellett , B J , Phelps , A D R & Ronald , K 2014 , ' Backward wave cyclotron-maser emission in the auroral magnetosphere ' , Physical Review Letters , vol. 113 , no. 15 , 155002 . https://doi.org/10.1103/PhysRevLett.113.155002 | en |
dc.identifier.issn | 0031-9007 | |
dc.identifier.uri | https://hdl.handle.net/10023/5802 | |
dc.description | This work was supported by EPSRC Grant No. EP/G04239X/1. | en |
dc.description.abstract | In this Letter, we present theory and particle-in-cell simulations describing cyclotron radio emission from Earth's auroral region and similar phenomena in other astrophysical environments. In particular, we find that the radiation, generated by a down-going electron horseshoe distribution is due to a backward wave cyclotron-maser emission process. The backward wave nature of the radiation contributes to upward refraction of the radiation that is also enhanced by a density inhomogeneity. We also show that the radiation is preferentially amplified along the auroral oval rather than transversely. The results are in agreement with recent Cluster observations. | |
dc.format.extent | 5 | |
dc.format.extent | 1322990 | |
dc.language.iso | eng | |
dc.relation.ispartof | Physical Review Letters | en |
dc.subject | Kilometric radiation | en |
dc.subject | Electron holes | en |
dc.subject | Current region | en |
dc.subject | Generation | en |
dc.subject | Distributions | en |
dc.subject | Instability | en |
dc.subject | QA Mathematics | en |
dc.subject | QC Physics | en |
dc.subject.lcc | QA | en |
dc.subject.lcc | QC | en |
dc.title | Backward wave cyclotron-maser emission in the auroral magnetosphere | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. Applied Mathematics | en |
dc.contributor.institution | University of St Andrews. Pure Mathematics | en |
dc.contributor.institution | University of St Andrews. School of Mathematics and Statistics | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | 10.1103/PhysRevLett.113.155002 | |
dc.description.status | Peer reviewed | en |
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