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Depolarization of Extragalactic Radio Sources

Published online by Cambridge University Press:  14 August 2015

M. Inoue  and
H. Tabara
M. Inoue
Affiliation:
Department of Astronomy, University of Tokyo, Tokyo, Japan
H. Tabara
Affiliation:
Faculty of Education, Utsunomiya University, Mine 350, Utsunomiya, Japan

Extract

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In the last decade correlations of the depolarization parameter λd with several parameters, i.e., the radio luminosity L, redshift z, and source size D have been investigated by several authors, where λd is the wavelength at which the percentage polarization drops to its half maximum. Kronberg ET AL. (1972) first pointed out that λd decreases with increasing z, while Morris and Tabara (1973) showed that λd increases with L and suggested that the depolarization is due to the internal Faraday rotation within radio sources. Conway ET AL.(1974), on the other hand, suggested that the λd-(1+z) relation is primary. Recently, Cohen (1979) showed that the λd-z relation may be the remnant of the physically meaningful relation λd-L, though the former is statistically real.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 97: Extragalactic Radio Sources , 1982 , pp. 339 - 340
Copyright
Copyright © Reidel 1982 

References

Cohen, N. L. 1979, Astron. Astrophys., 71, 362.Google Scholar
Conway, R. G., Haves, P., Kronberg, P. P., Stannard, D., Vallee, J. P., and Wardle, J. F. C. 1974, Mon. Not. R. Astr. Soc., 168, 137.Google Scholar
Kronberg, P. P., Conway, R. G., and Gilbert, J. A. 1972, Mon. Not. R. Astr. Soc., 156, 275.Google Scholar
Morris, D., and Tabara, H. 1973, Publ. Astron. Soc. Japan, 25, 295.Google Scholar