Abstract
PRESTON has pointed out1 that it should be possible to determine, or set upper limits to, magnetic fields in the range 105 to 106 gauss in DA white dwarfs from the quadratic Zeeman shift of their hydrogen Balmer lines. He suggested a limit of 5 × 105 gauss for DA stars generally from radial velocity data2. This limit was rather more stringent than the data really justified because discordant higher Balmer lines had been systematically excluded in finding mean velocities for the stars.
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References
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TRIMBLE, V. Quadratic Zeeman Shift in White Dwarfs. Nature Physical Science 231, 124 (1971). https://doi.org/10.1038/physci231124a0
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DOI: https://doi.org/10.1038/physci231124a0
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