Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.8009j&link_type=abstract
American Astronomical Society, 197th AAS Meeting, #80.09; Bulletin of the American Astronomical Society, Vol. 32, p.1536
Astronomy and Astrophysics
Astronomy
1
Scientific paper
We present total and linearly polarized intensity images of the quasars 0059+581, 1739+522, and CTA 102 at 1.3, 2, 3.6, and 6 cm obtained with the VLBA on 19 May, 2000. For all three sources the images show an unresolved polarized core from which a radio jet exdends. In the case of 1739+522 and CTA 102 the images reveal a complex polarization structure of the radio jets. We compare the total intensity and polarization parameters of the core and jet components at different frequencies and estimate Faraday rotation measures (RMs) in the central regions of the quasars and frequency-dependent shifts in the positions of the VLBI cores. We discuss the physical characteristics of the parsec-scale jets based on these results. This work was supported in part by U.S. National Science Foundation grant AST-9802941 and a grant from the State Committee Of Russian High Education. We thank Dr. M. Aller and Dr. H. Aller for providing the data measured at the Michigan Radio Astronomy Observatory.
Gabuzda Denise C.
Jorstad Svetlana G.
Pyatunina T. B.
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