Constraining Gravitational Theories by Observing Magnetic White Dwarfs

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dc.creatorPreuss, Oliver
dc.creatorJordan, Stefan
dc.creatorHaugan, Mark P.
dc.creatorSolanki, Sami K.
dc.date2004-11-25
dc.date.accessioned2026-07-07T02:16:01Z
dc.date.available2026-07-07T02:16:01Z
dc.descriptionUnder the assumption of a specific nonminimal coupling of torsion to Under the assumption of a specific nonminimal coupling of torsion to electromagnetism, spacetime is birefringent in the presence of a gravitational field leading to depolarization of light emitted from extended astrophysical sources. We use polarimetric data of the magnetic white dwarf RE J0317-853 to set for the very first time constraints on the essential coupling constant for this effect, giving k^2 <22 m^2. electromagnetism, spacetime is birefringent in the presence of a gravitational field leading to depolarization of light emitted from extended astrophysical sources. We use polarimetric data of the magnetic white dwarf RE J0317-853 to set for the very first time constraints on the essential coupling constant for this effect, giving k^2 <22 m^2.
dc.description4 pages, 1 Figure, to appear in the proceedings of the 14th European Workshop on White Dwarfs, eds. D. Koester and S. Moehler, ASP Conf. Series
dc.identifierhttps://arxiv.org/abs/astro-ph/0411688
dc.identifierhttp://arxiv.org/abs/astro-ph/0411688
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/8632
dc.subjectAstrophysics
dc.titleConstraining Gravitational Theories by Observing Magnetic White Dwarfs
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