Structure and evolution of magnetohydrodynamic solitary waves with Hall and finite Larmor radius effects

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Show simple item record Bello-Benítez, Enrique Sánchez Arriaga, Gonzalo Passot, T. Lavender, D. Siminos, E. 2019-08-27T09:51:49Z 2019-08-27T09:51:49Z 2019-02-08
dc.identifier.bibliographicCitation Physical review E, 9, 023202, Feb. 2019, 12 Pp.
dc.identifier.issn 2470-0045
dc.description.abstract Nonlinear and low-frequency solitary waves are investigated in the framework of the one-dimensional Hall-magnetohydrodynamic model with finite Larmor effects and two different closure models for the pressures. For a double adiabatic pressure model, the organization of these localized structures in terms of the propagation angle with respect to the ambient magnetic field Θ and the propagation velocity C is discussed. There are three types of regions in the Θ-C plane that correspond to domains where either solitary waves cannot exist, are organized in branches, or have a continuous spectrum. A numerical method valid for the two latter cases, which rigorously proves the existence of the waves, is presented and used to locate many waves, including bright and dark structures. Some of them belong to parametric domains where solitary waves were not found in previous works. The stability of the structures has been investigated by performing a linear analysis of the background plasma state and by means of numerical simulations. They show that the cores of some waves can be robust, but, for the parameters considered in the analysis, the tails are unstable. The substitution of the double adiabatic model by evolution equations for the plasma pressures appears to suppress the instability in some cases and to allow the propagation of the solitary waves during long times
dc.description.sponsorship G.S.A. is supported by the Ministerio de Economía y Competitividad of Spain under Grant No. RYC-2014-15357. E.S. was supported by the Swedish Research Council, Grant No. 2016-05012, and by the Knut and Alice Wallenberg Foundation.
dc.format.extent 12
dc.language.iso eng
dc.publisher American Physical Society
dc.rights © 2019 American Physical Society
dc.subject.other Nonlinear hydromagnetic-waves
dc.subject.other Homoclinic orbits
dc.subject.other Oblique solitons
dc.subject.other Alfven waves
dc.subject.other Fluid model
dc.subject.other Solar-wind
dc.subject.other Propagation
dc.subject.other Instability
dc.subject.other Turbulence
dc.subject.other Parallel
dc.title Structure and evolution of magnetohydrodynamic solitary waves with Hall and finite Larmor radius effects
dc.type article
dc.subject.eciencia Física
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. RYC-2014-15357
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 2 (023202)
dc.identifier.publicationlastpage 12
dc.identifier.publicationtitle PHYSICAL REVIEW E
dc.identifier.publicationvolume 99
dc.identifier.uxxi AR/0000023128
dc.contributor.funder Ministerio de Economía y Competitividad (España)
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