The quasar 0153+74

Astronomy and Astrophysics – Astronomy

Scientific paper

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Quasars, Radio Jets (Astronomy), Astronomical Models, Radio Emission

Scientific paper

The radio emission at milliarcsecond scales from the quasar 0153+74 at centimeter wavelengths is dominated by two components, one of which is selfabsorbed and the other one optically thin between the wavelengths of 18 cm and 6 cm. Monitoring of the temporal variations of the positions of the two dominant components show their position to be stationary to 0.02±0.04 milliarcseconds/yr. Weaker optically thin radio emission is found between the two components. This quasar together with 3C 395 may represent an early stage in the development of compact flat spectrum radio sources which display dominant one sided jet emission on parcsec scales.

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