Polarimetric observations of the blazars PKS 0521-365 and PKS 0537-441

Details Polarimetric observations of the blazars PKS 0521-365 and PKS 0537-441 Polarimetric observations of the blazars PKS 0521-365 and PKS 0537-441

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26as...84..611l&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 84, no. 3, Sept. 1990, p. 611-614.

Astronomy and Astrophysics

Astronomy

7

Bl Lacertae Objects, Blazars, Linear Polarization, Optical Polarization, Radio Jets (Astronomy), Random Variables, Active Galactic Nuclei, Emission Spectra, Line Of Sight, Synchrotron Radiation

Scientific paper

Optical polarimetric observations of the blazars PKS 0521-365 and PKS 0537-441 are presented for one week in November 1986. Both objects showed day-to-day variations of linear polarization, reaching up to 8 percent. PKS 0521-365 exhibited a preferred position angle, with a mean component of P = 6 percent and theta = 170 deg. A comparison of this with the orientation of its optical and radio jet, reveals a difference of 40 deg. PKS 0537-441 showed a large change in the position angle over the week, with the polarization vector following a direction in the Q - U plane which suggests a nonrandom variation. The results are compared with previous measurements.

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