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13. The Polarization of Radiation from White Dwarfs

Published online by Cambridge University Press:  14 August 2015

J. R. P. Angel  and
J. D. Landstreet
J. R. P. Angel
Affiliation:
Columbia Astrophysics Laboratory, Columbia University, New York, N.Y., U.S.A.
J. D. Landstreet
Affiliation:
University of Western Ontario, London, Ont., Canada

Extract

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During the course of two observational programs to search for magnetic fields in white dwarfs (Angel and Landstreet, 1970a; Kemp, 1970), it was discovered by Kemp and Swedlund (Kemp et al., 1970b) that the continuum optical radiation from the λ4135 type white dwarf Grw + 70° 8247 is circularly polarized. This circular polarization was measured in a broad band from about 4000 to 7000 Å a number of times; in this band the circular polarization does not appear to vary from its mean value of 3.29% with an amplitude of more than about 0.1% (or 3% of the measured mean polarization) on any time scale from 24 seconds to 2 weeks (Angel and Landstreet, 1970b).

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 42: White Dwarfs , 1971 , pp. 79 - 80
Copyright
Copyright © Reidel 1971 

References

Angel, J. R. P. and Landstreet, J. D.: 1970a, Astrophys. J. (Letters) 160, L147.Google Scholar
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Kemp, J. C.: 1970, Astrophys. J. 162, 169.Google Scholar
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Kemp, J. C., Swedlund, J. B., and Evans, B. D.: 1970a, Phys. Rev. Letters 24, 1211.Google Scholar
Kemp, J. C., Swedlund, J. B., Landstreet, J. D., and Angel, J. R. P.: 1970b, Astrophys. J. (Letters) 161, L77.Google Scholar