Now showing items 11-20 of 60
Spectropolarimetry of the molecular-hydrogen line emission from OMC-1
Observations of the H2 v = 1-0 S(1) line at 35 km/s velocity resolution were obtained at several locations within OMC-1, including the molecular hydrogen reflection nebula. All line profiles are smooth and show no evidence ...
Polarimetric observations of the quasar 3C-345
Infrared and optical polarimetric observations of the quasar 3C 345 are presented, which show a decrease in the degree of polarization with frequency previously observed by Smith et al., and interpreted by them as the ...
EXO 023432-5232.3 - an eclipsing AM Herculis binary
The authors report observations of the serendipitous EXOSAT source EXO 023432-5232.3 which confirm that the object is an AM Herculis type binary and show the presence of eclipses by the companion star. From high-speed ...
Interstellar polarization in the dust lane of Centaurus A (NGC 5128)
Optical and infrared linear polarization measurements of the Type 1 supernova 1986G in Centaurus A are used to determine the wavelength dependence of polarization produced by transmission of radiation through the dust lane ...
Magnetic field structure in dark clouds
(Reidel Publishing Company (Kluwer), 1987)
Polarimetric mapping of a new infrared reflection nebula GGD 27 IRS
We report the discovery of an infrared reflection nebula GGD27 IRS, near the optical nebulosity GGD27. It shows a dumbbell-shaped structure with large degrees of polarization, up to 64%, in the K band. From the centrosymmetric ...
A high resolution hydrogen-line survey of Messier 31. III : H I holes in the interstellar medium
An analysis is carried out of H I holes in M 31 as detected with the Westerbork radiotelescope. The holes range from 100-1000 pc across and represent missing masses ranging from 1000-10 million solar masses, which would ...
Laser guiding of electron beams in the advanced test acceleration
The recently demonstrated technique of laser guiding has been used to propagate successfully a 10-kA relativistic electron beam 95 m through the Advanced Test Accelerator and postaccelerator beamline. The maximum transverse ...