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Discovery of Circularly Polarized Radio Emission from SS 433


Fender, R and Rayner, DP and Norris, R and Sault, RJ and Pooley, G, Discovery of Circularly Polarized Radio Emission from SS 433, The Astrophysical Journal, 530, (1) pp. L29-L32. ISSN 0004-637X (2000) [Refereed Article]

DOI: doi:10.1086/312481


We report the discovery of circularly polarized radio emission from the radio-jet X-ray binary SS 433 with the Australia Telescope Compact Array. The flux density spectrum of the circular polarization, clearly detected at four frequencies between 1 and 9 GHz, is of the form V ∝ v-0.9±0.1. Multiple components in the source and a lack of very high spatial resolution do not allow a unique determination of the origin of the circular polarization or of the spectrum of fractional polarization. However, we argue that the emission is likely to arise in the inner regions of the binary, possibly via propagation-induced conversion of linear to circular polarization, and the fractional circular polarization of these regions may be as high as 10%. Observations such as these have the potential to help us investigate the composition, whether pairs or baryonic, of the ejecta from X-ray binaries.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Galactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Rayner, DP (Mr David Peter Rayner)
ID Code:18575
Year Published:2000
Web of Science® Times Cited:38
Deposited By:Physics
Deposited On:2000-08-01
Last Modified:2011-11-29

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