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The wavelength dependence of polarization in BL Lac objects
(1983)
Accurate polarization measurements of six BL Lac objects and one highly polarized QSO have been obtained simultaneously at optical and near-infrared wavelengths. The polarizations observed in the infrared are generally ...
The variable infrared source near HH100
(1982)
Photometric observations are presented which confirm the high variability, of up to 2.5 mag at K, of the IR source associated with the Herbig-Haro object HH100, and it is suggested that such a large variation must be a ...
Infrared and optical polarization of Markarian-421
(1981)
Observations of the polarization of Mrk 421 in the V, J, and K bands are presented. The infrared radiation shows variable polarization with a range of at least 2-4%. The spectrum of the nonthermal source in the VJK regions ...
IR photometry and polarimetry of 2A0311−227
(1980)
The X-ray source 2A0311 − 227 has recently been identified with a star whose spectrum and polarization properties show it to be an AM Herculis type binary. These binaries are thought to consist of a synchronously rotating ...