Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...225l...5r&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 225, Oct. 1, 1978, p. L5-L9.
Astronomy and Astrophysics
Astronomy
41
Infrared Astronomy, Nonthermal Radiation, Polarimetry, Quasars, Radio Astronomy, Visual Observation, Centimeter Waves, Millimeter Waves, Polarization Characteristics
Scientific paper
The polarization characteristics of the QSOs 3C 273 and 3C 345 at radio wavelengths, of the BL Lac objects 0735+17, OJ 287, and BL Lac in both radio and visual-IR regions, and of the BL Lac object 0235+16 at radio wavelengths are examined. It is found that the degree of polarization generally tends to increase toward shorter wavelengths for all the objects observed, that little or no Faraday rotation is occurring in 3C 273, OJ 287, and BL Lac, and that OJ 287 exhibits a relatively high degree of polarization and a nearly constant position angle at all but the longest radio wavelength. Constant or nearly constant position angles are also observed for 3C 273 and BL Lac. These results are taken to indicate that a single entity in each source is responsible for nonthermal radiation extending from the radio band into the UV.
Jones Thomas W.
Owen Frazer N.
Puschell Jeffery J.
Rudnick Lawrence
Stein Wayne A.
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