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Solving the forward problem of helioseismology in the frequency domain

hal.structure.identifierMax-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research [MPS]
hal.structure.identifierInstitut für Astrophysik [Göttingen]
dc.contributor.authorGIZON, Laurent
hal.structure.identifierAdvanced 3D Numerical Modeling in Geophysics [Magique 3D]
hal.structure.identifierLaboratoire de Mathématiques et de leurs Applications [Pau] [LMAP]
dc.contributor.authorBARUCQ, Hélène
hal.structure.identifierAdvanced 3D Numerical Modeling in Geophysics [Magique 3D]
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorDURUFLÉ, Marc
hal.structure.identifierMax-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research [MPS]
dc.contributor.authorBIRCH, C. Aaron
hal.structure.identifierLaboratoire de Mathématiques et de leurs Applications [Pau] [LMAP]
hal.structure.identifierAdvanced 3D Numerical Modeling in Geophysics [Magique 3D]
dc.contributor.authorCHABASSIER, Juliette
hal.structure.identifierInstitut für Numerische und Angewandte Mathematik [Göttingen] [NAM]
dc.contributor.authorFOURNIER, Damien
hal.structure.identifierMax-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research [MPS]
dc.contributor.authorHANSON, Cristopher
dc.date.accessioned2024-04-04T03:15:41Z
dc.date.available2024-04-04T03:15:41Z
dc.date.conference2015-07-20
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/194162
dc.description.abstractEnSolar acoustic waves are continuously excited by turbulent convection (a random process). The forward problem of local helioseismology was specified at the Waves 2013 conference: computing the cross-covariance of the wave field between any two locations on the solar surface. Here we solve the problem in the frequency domain using the finite element solver Montjoie. One of the specificities of propagation/scattering problems in the Sun is the very sharp decrease of sound speed and density with radius near the surface. We show that the problem simplifies considerably under the assumption that the co-variance function of the source of excitation is proportional to the attenuation.
dc.language.isoen
dc.title.enSolving the forward problem of helioseismology in the frequency domain
dc.typeCommunication dans un congrès
dc.subject.halInformatique [cs]/Analyse numérique [cs.NA]
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.conference.titleTHE 12TH INTERNATIONAL CONFERENCE ON MATHEMATICAL AND NUMERICAL ASPECTS OF WAVE PROPAGATION
bordeaux.countryDE
bordeaux.conference.cityKarlsruhe
bordeaux.peerReviewedoui
hal.identifierhal-01264023
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.end2015-07-24
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01264023v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=GIZON,%20Laurent&BARUCQ,%20H%C3%A9l%C3%A8ne&DURUFL%C3%89,%20Marc&BIRCH,%20C.%20Aaron&CHABASSIER,%20Juliette&rft.genre=unknown


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