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- W2045686479 abstract "We present total-intensity and linear-polarization observations of four selected blazars, 0716+714, 0752+258, 1156+295 and 1400+162, with the VLA A-array, and MERLIN and EVN observations of 1400+162. The sources 0752+258 and 1400+162 which have nearly constant optical polarization, have well-defined double-lobed radio structure, with relatively weak radio cores, and are likely to be at large viewing angles. In addition, 0752+258 appears to be a twin-jet blazar. The position angle (PA) of the VLBI jet in 1400+162 is close to that of the arcsec-scale jet near the nucleus, as well as the optical and 2-cm core polarization PAs. The blazars 0716+714 and 1156+295, which exhibit strongly variable optical polarization, have a core-dominated radio structure and perhaps have their jet axes close to the line-of-sight. From polarization observations at 20, 18, 6, and 2 cm, we found that the rotation measure of the radio core in 0716+714 to be ∼20 rad m−2. We suggest that low values of core rotation measure in core-dominated sources could be consistent with the relativistic beaming models." @default.
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- W2045686479 date "1987-09-01" @default.
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- W2045686479 title "Radio observations of a few selected blazars" @default.
- W2045686479 doi "https://doi.org/10.1093/mnras/228.1.203" @default.
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