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Near-infrared imaging polarimetry of bipolar nebulae 1:the BN-KL region of OMC-1
(1991)
New high-spatial-resolution polarization images of the BN-KL region of OMC-1 from 1.25-3.6 microns are presented. At the longer wavelengths these show a centro-symmetric polarization vector pattern, centered mainly on IRc2, ...
Near-infrared imaging polarimetry of bipolar nebulae. 4: GL-490, GL-2789, GL-2136
(1991)
High spatial resolution near-IR polarization and surface brightness images of the ouflow sources GL 490, GL 2789 and GL 2136 are presented. Polarization vector-maps at J, H and K show centro-symmetric patterns around GL ...
A multiband 2-beam optical and infrared polarimeter
(1991)
A new polarimeter capable of simultaneous observations in the U, B, V, R and I optical bands and one of the J, H, K, L and M near-infrared bands has been constructed. The polarimeter has good polarization efficiency and ...
An optical and near-infrared polarization survey of Seyfert and broad-line radio galaxies. 1 : statistical properties
(1990)
The present broad-band and near-IR flux density and polarization measurements of a sample of 71 Seyfert galaxies and three broad-line radio galaxies confirms earlier indications that the polarization of Seyferts is generally ...
An optical and near-infrared polarization survey of Seyfert and broad-line radio galaxies. 2 : the wavelength dependence of polarization
(1990)
We discuss the wavelength dependence (0.44-2.2 micron) of polarization of the sample of 71 Seyfert and three broad-line radio galaxies presented in Paper I. For four galaxies, 3A 0557-353, Fairall 51, IC 4329A and NGC 3753, ...
The optical and infrared-emission of blazars
(1990)
A polarization study is presented of 44 blazars and candidate blazars observed at optical and near-IR frequencies. The spectrum of the radiation is discussed in terms of shock acceleration models. Frequency dependence is ...
Optical and infrared polarimetry and photometry of blazars
(1990)
We have carried out a polarization study of 44 blazars and candidate blazars at optical and near-infrared frequencies covering the period 1986 August to 1988 February. The data show flux and polarization properties changing ...