WD1-3 - (WD1) The Status of Magnetic White Dwarfs - (WD3) White Dwarfs in Binaries and the Role of Gravitational Waves |
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Speaker |
Gaensicke, Boris |
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Coauthors |
Gaensicke, Boris T. |
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Magnetic white dwarfs: the |
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Abstract |
A small fraction of white dwarfs exhibit fields ranging from ~10kG to ~1000MG, and I will review the extensive body of observational studies of these stars. The detection of Zeeman-split lines in the photospheric spectra of white dwarfs provides the unrivalled opportunity to test fundamental physics in the regime of extreme fields. Magnetic effects have been detected for a wide range of atmospheric elements, including hydrogen, helium, carbon, calcium, magnesium, and sodium. Time-resolved observations of a handful of white dwarfs have been used to infer their field topologies, which can deviate significantly from simple dipole structures. |
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