NASA NTRS · 19750053942
Linear polarization variations modulo 5.6 days in HDE 226868
Abstract
Results are reported for observations of variations in the linear polarization in HDE 226868 (the optical counterpart of Cyg X-1) made with a photoelastic polarimeter and a U-filter. The UV linear-polarization variations, as folded on the 5.6-day orbital period, are found to have amplitudes of 0.25% and position-angle changes of 2.7 deg. These results are shown to be consistent with the geometry and phasing required by the model of the binary system.
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Nolt, I. G., Kemp, J. C., Rudy, R. J., Southwick, R. G., Radostitz, J. V., Caroff, L. J.. 1975-07-01. Linear polarization variations modulo 5.6 days in HDE 226868. https://ntrs.nasa.gov/citations/19750053942
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