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Discussion of the Electromotive Force Terms in the Model of Parker-unstable Galactic Disks with Cosmic Rays and Shear

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dc.contributor.author Otmianowska-Mazur, Katarzyna
dc.contributor.author Kowal, Grzegorz
dc.contributor.author Hanasz, Michał
dc.date.accessioned 2012-12-19T09:06:12Z
dc.date.available 2012-12-19T09:06:12Z
dc.date.issued 2007-10-17
dc.identifier.citation Astrophys.J.668:110-123,2007
dc.identifier.other doi:10.1086/521010
dc.identifier.uri http://repozytorium.umk.pl/handle/item/244
dc.description.abstract We analyze the electromotive force (EMF) terms and basic assumptions of the linear and nonlinear dynamo theories in our three-dimensional (3D) numerical model of the Parker instability with cosmic rays and shear in a galactic disk. We also apply the well known prescriptions of the EMF obtained by the nonlinear dynamo theory (Blackman & Field 2002 and Kleeorin et al. 2003) to check if the EMF reconstructed from their prescriptions corresponds to the EMF obtained directly from our numerical models. We show that our modeled EMF is fully nonlinear and it is not possible to apply any of the considered nonlinear dynamo approximations due to the fact that the conditions for the scale separation are not fulfilled.
dc.language.iso eng
dc.relation.uri http://arxiv.org/abs/0710.3328
dc.rights info:eu-repo/semantics/openAccess
dc.subject Astrophysics
dc.title Discussion of the Electromotive Force Terms in the Model of Parker-unstable Galactic Disks with Cosmic Rays and Shear
dc.type info:eu-repo/semantics/article


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