Simultaneous UBVRI photopolarimetric observations of blazars. II

Bibcode
1992A&AS...94...37T
Takalo, L. O.; Sillanpaa, A.; Nilsson, K.; Kidger, M.; de Diego, J. A.; Piirola, V.
Bibliographical reference

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 94, no. 1, July 1992, p. 37-42.

Advertised on:
7
1992
Number of authors
6
IAC number of authors
2
Citations
68
Refereed citations
65
Description
Results are presented from simultaneous UBVRI photopolarimetric observations of eight blazars at the 2.56-m Nordic Optical Telescope during winter 1991. In 3C 66A the highest ever measured polarization, P(U) = 30.5 percent is observed, with small frequency dependence (FDP), P being lower toward longer wavelengths. In AO 0235 + 164, large changes in the polarization level and in the FDP between different nights were detected. The FDP is seen to be three times more common than the frequency dependence in the position angle in these blazars.
Type
Refereed
Blazars
Quasars
Telescopes

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