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A high resolution radio continuum survey of Messier 31. II : Observations at 1412 MHz, data reduction, and the 37W catalogue of radio sources
The radio continuum emission of the spiral galaxy M31 has been mapped at a wavelength of 21 cm with the Westerbork Synthesis Radio Telescope, at an angular resolution of 23" x 35", corresponding to a linear resolution of ...
Electron-beam guiding and phase-mix damping by a laser-ionized channel
An ultraviolet-laser-ionized channel in low-pressure benzene has been successfully used to guide and focus a 7-kA relativistic electron beam over distances up to 4 m. In addition, phase-mix damping of coherent, transverse ...
An optical and near-infrared study of the AM Herculis-type binary CW 1103+254
All main components of the AM Herculis-type binary CW 1103 + 254 can be distinguished by means of observations encompassing optical and near-IR photometry and polarimetry, together with optical spectroscopy and spectropolarimetry. ...
Infrared spectropolarimetric observations of BNKL : the grain alignment mechanism
Spectropolarimetric observations between 8 - 13 μm of BN, IRc 2, 3, 4 and a further region in the Orion infrared complex BNKL are presented. Apart from IRc 2, all show evidence for absorption by aligned grains and have ...
Coordinated multisite observations of the variability of BL Lac
The authors present the results of multisite observations of the optical polarization of BL Lac, together with some flux measurements, at a time when BL Lac was relatively faint. The level of polarization varies in a manner ...