Now showing items 1-9 of 9
The 1993 multiwavelength campaign on 3C 279 : the radio to gamma-ray energy distribution inlow state
Simultaneous observations of 3C 279 at radio, millimeter, near-infrared, optical, ultraviolet (with IUE) and X-ray (with ROSAT) wavelengths were obtained in 1992 December-1993 January, during a three week pointing at the ...
Infrared Photometry of Blazars - 8 Years of Observations
We present photometric observations of 16 blazar sources at mid- to near- infrared wavelengths, covering the period 1986 January to 1993 December. We present the data in tabular form and, for selected well-sampled sources, ...
Production of heavy-elements in inhomogeneous cosmologies
Baryon density inhomogeneities during big bang nucleosynthesis can result from a variety of possible causes (e.g., quantum chromodynamic and electroweak phase transitions; cosmic strings). We present here the consequences ...
The variability in the UV resonance lines of the cataclysmic variables MU Cen, AH Her and QU Car
We present a time-variability study of the uV resonance lines Nv 1240, Si iv 1397 and C iv 1549 in the dwarf novae AH Her and MU Cen and the nova-like variable QU Car. The main findings are as follows. (i)Virtually no ...
The shock-excited P-Cygni nebula
We have obtained images in the [N II] λ6584 line of the nebula around the luminous blue variable star P Cygni, using a 4 arcsec wide occulting strip. A nearly circular inner nebula is found, containing many bright ...
Light scattering from non-spherical airborne particles : experimental and theoretical comparisons
A laser light-scattering instrument has been designed to permit an investigation of the spatial intensity distribution of light scattered by individual airborne particles constrained within a laminar flow, with a view to ...