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Science 30 December 1966:
Vol. 154. no. 3757, pp. 1656 - 1658
DOI: 10.1126/science.154.3757.1656
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Articles

Galactic Depolarization of the 21-Centimeter-Wavelength Radiation of Extragalactic Sources

J. M. Bologna 1, E. F. McClain 1, and R. M. Slonaker 1

1 E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, D. C. 20390

The dependence of the degree of linear polarization of the radiation from 213 extragalactic sources on galactic coordinates was investigated at 21-centimeter wavelength. In addition to the previously known latitude effect, the depolarization of the radiation during transit through our galaxy is also a function of galactic longitude. One possible explanation is that galactic depolarization is a simple function of the distance traveled by the radiation through an extended galactic halo.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)