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dc.contributor.authorSpeirs, D. C.
dc.contributor.authorRonald, K.
dc.contributor.authorPhelps, A. D. R.
dc.contributor.authorKoepke, M. E.
dc.contributor.authorCairns, Robert Alan
dc.contributor.authorRigby, A.
dc.contributor.authorCruz, F.
dc.contributor.authorTrines, R. M. G. M.
dc.contributor.authorBamford, R.
dc.contributor.authorKellet, B. J.
dc.contributor.authorAlbertazzi, B.
dc.contributor.authorCross, J. E.
dc.contributor.authorFraschetti, F.
dc.contributor.authorGraham, P.
dc.contributor.authorKozlowski, P. M.
dc.contributor.authorKuramitsu, Y.
dc.contributor.authorMiniati, F.
dc.contributor.authorMorita, T.
dc.contributor.authorOliver, M.
dc.contributor.authorReville, B.
dc.contributor.authorSakawa, Y.
dc.contributor.authorSarkar, S.
dc.contributor.authorSpindloe, C.
dc.contributor.authorKoenig, M.
dc.contributor.authorSilva, L. O.
dc.contributor.authorLamb, D. Q.
dc.contributor.authorTzeferacos, P.
dc.contributor.authorLebedev, S.
dc.contributor.authorGregori, G.
dc.contributor.authorBingham, R.
dc.date.accessioned2019-03-21T16:30:09Z
dc.date.available2019-03-21T16:30:09Z
dc.date.issued2019
dc.identifier.citationSpeirs , D C , Ronald , K , Phelps , A D R , Koepke , M E , Cairns , R A , Rigby , A , Cruz , F , Trines , R M G M , Bamford , R , Kellet , B J , Albertazzi , B , Cross , J E , Fraschetti , F , Graham , P , Kozlowski , P M , Kuramitsu , Y , Miniati , F , Morita , T , Oliver , M , Reville , B , Sakawa , Y , Sarkar , S , Spindloe , C , Koenig , M , Silva , L O , Lamb , D Q , Tzeferacos , P , Lebedev , S , Gregori , G & Bingham , R 2019 , ' Maser radiation from collisionless shocks ' , High Power Laser Science and Engineering , vol. 7 , e17 . https://doi.org/10.1017/hpl.2019.3en
dc.identifier.issn2095-4719
dc.identifier.otherPURE: 258237640
dc.identifier.otherPURE UUID: f972a60d-2580-45db-8703-bd4055bc21ab
dc.identifier.otherScopus: 85062907539
dc.identifier.otherWOS: 000461133600002
dc.identifier.urihttps://hdl.handle.net/10023/17340
dc.descriptionFunding: UK Engineering and Physical Sciences Research Council (grant Nos. EP/N014472/1, EP/R004773/1 and EP/N013298/1) and the Science and Technologies Facilities Council of the United Kingdom. F.C. and L.O.S. acknowledge support from the European Research Council (InPairs ERC-2015-AdG 695088) and FCT Portugal (grant No. PD/BD/114307/2016).en
dc.description.abstractThis paper describes a model of electron energization and cyclotron-maser emission applicable to astrophysical magnetized collisionless shocks. It is motivated by the work of Begelman, Ergun and Rees [Astrophys. J. 625 , 51 (2005)] who argued that the cyclotron-maser instability occurs in localized magnetized 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 [Bingham and Cairns, Phys. Plasmas 7, 3089 (2000); Melrose, Rev. Mod. Plasma Phys. 1 , 5 (2017)].
dc.format.extent8
dc.language.isoeng
dc.relation.ispartofHigh Power Laser Science and Engineeringen
dc.rights© The Author(s) 2019. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.doi:10.1017/hpl.2019.3en
dc.subjectLaboratory astrophysicsen
dc.subjectPlasma physicsen
dc.subjectParticle accelerationen
dc.subjectPlasma-wave instabilitiesen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subjectT Technologyen
dc.subjectT-NDASen
dc.subject.lccQBen
dc.subject.lccQCen
dc.subject.lccTen
dc.titleMaser radiation from collisionless shocksen
dc.typeJournal articleen
dc.contributor.sponsorEPSRCen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. Applied Mathematicsen
dc.identifier.doihttps://doi.org/10.1017/hpl.2019.3
dc.description.statusPeer revieweden
dc.identifier.grantnumberEP/R004773/1en


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