Zeeman tomography of magnetic white dwarfs: General method and application to EF Eridani

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dc.creatorEuchner, F.
dc.creatorBeuermann, K.
dc.creatorReinsch, K.
dc.creatorJordan, S.
dc.creatorHessman, F. V.
dc.creatorGaensicke, B. T.
dc.date2003-03-14
dc.date.accessioned2026-07-07T02:07:57Z
dc.date.available2026-07-07T02:07:57Z
dc.descriptionWe have developed a new method to derive the magnetic field distribution on the surfaces of rotating magnetic white dwarfs from phase-resolved flux and circular polarization spectra. An optimization code based on an evolutionary strategy is used to fit synthetic Zeeman spectra for a variety of model geometries described in the framework of a truncated multipole expansion. We demonstrate that the code allows the reconstruction of relatively complex fields using noise-added synthetic input spectra. As a first application, we analyze flux and circular polarization spectra of the polar EF Eri in a low state of accretion taken with FORS1 at the ESO VLT.
dc.description4 pages, 3 figures, to appear in 'White Dwarfs', proceedings of the 13th European workshop on White Dwarfs, eds. D. de Martino, R. Kalytis, R. Silvotti, J. E. Solheim, in print
dc.identifierhttps://arxiv.org/abs/astro-ph/0303336
dc.identifierhttp://arxiv.org/abs/astro-ph/0303336
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/5867
dc.subjectAstrophysics
dc.titleZeeman tomography of magnetic white dwarfs: General method and application to EF Eridani
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