Show simple item record

Files in this item


Item metadata

dc.contributor.authorSpeirs, D. C.
dc.contributor.authorBingham, R.
dc.contributor.authorCairns, R. A.
dc.contributor.authorVorgul, I.
dc.contributor.authorKellett, B. J.
dc.contributor.authorPhelps, A. D. R.
dc.contributor.authorRonald, K.
dc.identifier.citationSpeirs , 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 .
dc.identifier.otherPURE: 157835103
dc.identifier.otherPURE UUID: 25bc82f6-b37f-46c3-8941-8838be03d3cf
dc.identifier.otherWOS: 000342797100007
dc.identifier.otherScopus: 84907835192
dc.identifier.otherWOS: 000342797100007
dc.descriptionThis work was supported by EPSRC Grant No. EP/G04239X/1.en
dc.description.abstractIn 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.relation.ispartofPhysical Review Lettersen
dc.rights© 2014. American Physical Society.en
dc.subjectKilometric radiationen
dc.subjectElectron holesen
dc.subjectCurrent regionen
dc.subjectQA Mathematicsen
dc.subjectQC Physicsen
dc.titleBackward wave cyclotron-maser emission in the auroral magnetosphereen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.Applied Mathematicsen
dc.contributor.institutionUniversity of St Andrews.Pure Mathematicsen
dc.contributor.institutionUniversity of St Andrews.School of Mathematics and Statisticsen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.description.statusPeer revieweden

This item appears in the following Collection(s)

Show simple item record