The influence of a magnetic field of the secondary star on dwarf nova outbursts

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dc.contributor.authorMeyerHofmeister, E
dc.contributor.authorVogt, N
dc.contributor.authorMeyer, F
dc.date.accessioned2025-01-21T01:33:59Z
dc.date.available2025-01-21T01:33:59Z
dc.date.issued1996
dc.description.abstractMany observations indicate that fast rotating late type stars show magnetic activity. We therefore argue that some of the secondary stars in cataclysmic binaries might also have magnetic fields. Such magnetic fields would reach over to the accretion disk around the white dwarf primary. We investigate the effect on dwarf nova outbursts. The magnetic field lines will penetrate the disk and remove angular momentum. This shifts the accumulation of mass towards the inner disk, closer to the white dwarf and therefore leads to a different outburst behaviour, which can be recognized in observed light curves of dwarf novae. We detected a cycle of 18 years in the outburst behaviour of SS Aur, possibly related to magnetic activity. SS Cyg displays a similar but less pronounced cycle of 7 years while no traces of magnetic activity were found for U Gem.
dc.fuente.origenWOS
dc.identifier.issn0004-6361
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97498
dc.identifier.wosidWOS:A1996UQ88200018
dc.issue.numero2
dc.language.isoen
dc.pagina.final525
dc.pagina.inicio519
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subject(stars) cataclysmic variables
dc.subjectstars, magnetic fields
dc.subjectaccretion disks
dc.subjectstars, late-type
dc.subjectstars, individual, SS Aurigae, SS Cygni, U Geminorum
dc.titleThe influence of a magnetic field of the secondary star on dwarf nova outbursts
dc.typeartículo
dc.volumen310
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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