Accession Number : AD0776282

Title :   Scintillation and Apparent Angular Diameter,

Corporate Author : OWENS VALLEY RADIO OBSERVATORY PASADENA CALIF

Personal Author(s) : Cohen,M. H. ; Cronyn,W. M.

Report Date : 1974

Pagination or Media Count : 18

Abstract : Angular scattering, intensity scintillations, and apparent diameter are discussed in the context of arbitrary irregularity structure. The intrinsic diameter of a source can always be measured with an interferometer in the presence of arbitrarily strong scattering unless all three of the following conditions apply: (1) intrinsic diameter < scattering angle, (2) the source displays weak or no intensity scintillations, (3) a point source shows strong intensity scintillations. If these conditions do apply the apparent diameter is the scattering angle. (Author)

Descriptors :   *Extraterrestrial radio waves, *Scintillation, Electromagnetic scattering, Quasars, Pulsars

Subject Categories : Astrophysics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE