Polarization variability of extragalactic radio sources at 1435 MHz

Details Polarization variability of extragalactic radio sources at 1435 MHz Polarization variability of extragalactic radio sources at 1435 MHz

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...269...77l&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 269, no. 1-2, p. 77-82.

Astronomy and Astrophysics

Astronomy

10

Astronomical Polarimetry, Extragalactic Radio Sources, Linear Polarization, Radio Jets (Astronomy), Quasars, Radio Spectra, Variability

Scientific paper

Four months of radiopolarimetric observations at 1435 MHz of the extragalactic radio sources PKS 0438-436, PKS 0521-365, and PKS 0537-441 are presented. All three sources showed variability of flux density, polarization degree, and position angle. PKS 0521-365 displayed a linear rotation of the p.a. during the four months of observations, with a rate of the rotation of 4.8 deg per day. This rotation is interpreted in the context of a shock in a relativistic jet model, with helical configuration. The flux density, polarization degree, and position angle variations of this source are as predicted by the model of Koenigl and Choudhuri (1985).

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