Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/99353
Type: Artigo de periódico
Title: Discrete Alfvén Waves In Solar Loop Prominences
Author: De Azevedo C.A.
De Assis A.S.
Shigueoka H.
Sakanaka P.H.
Abstract: It is shown that a discrete Alfvén wave can explain the natural oscillations of solar loop prominences by considering the existence of a current flow. Discrete Alfvén waves are a new class of Alfvén waves which is described by the inclusion of the finite ion cyclotron frequency (ω/ωcl≠0) and/or the equilibrium plasma current. In this paper we consider only the effect of the current since in solar prominences (ω/ωcl≈0). We have modeled the solar prominences as a cylindrical plasma, surrounded by vacuum (corona), with L ≫ a where L and a are the plasma column, length, and radius, respectively. We have calculated the spectrum of the discrete Alfvén waves as function of the magnitude and shape of the plasma current. © 1991 Kluwer Academic Publishers.
Editor: Kluwer Academic Publishers
Rights: fechado
Identifier DOI: 10.1007/BF00151748
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-5644259286&partnerID=40&md5=d0641fec4d7e872dacf3ebbaeffabcd1
Date Issue: 1991
Appears in Collections:Unicamp - Artigos e Outros Documentos

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