Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a...103..277d&link_type=abstract
Astronomy and Astrophysics, vol. 103, no. 2, Nov. 1981, p. 277-287.
Astronomy and Astrophysics
Astronomy
33
Linear Polarization, Microwave Emission, Radiant Flux Density, Radio Astronomy, Supernova Remnants, Astronomical Maps, Depolarization, Faraday Effect, Hydrogen Ions, Light Emission
Scientific paper
Radio continuum observations at 1.7 and 2.7 GHz are presented of the supernova remnant W 50 which is associated with the unusual object SS 433. Both total intensity and linear polarization were measured at the two frequencies, and parameters for the Faraday rotation and depolarization are derived. The remnant shows polarization of up to 10% of the total intensity at 1.7 GHz and up to 40 % at 2.7 GHz. The S 74 loop is completely unpolarized, as would be expected from a thermal source. The part of the remnant nearest S 74 is also unpolarized, suggesting that S 74 lies nearer to us than does W 50, and may be causing depolarization of that region of W 50. This would put a lower limit of 2.3 kpc on the distance of W 50.
SS 433 was strong during both sets of measurements.
Downes J. B. A.
Pauls Thomas
Salter Christopher J.
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