Accession Number:

ADA028393

Title:

Variations in the Intensities and Sizes of Compact Radio Sources at 13 CM Wavelength,

Descriptive Note:

Corporate Author:

OWENS VALLEY RADIO OBSERVATORY PASADENA CALIF

Report Date:

1976-01-01

Pagination or Media Count:

35.0

Abstract:

Ninety-eight radio sources have been observed at lambda 13 cm with interferometers having baselines of 6 to 8 x 10 to the 7th power wavelengths, either from California to Australia or Australia to South Africa, at various times between 1969 and 1974. Of these, 63 have been detected, indicating that they have some compact structure on an angular scale of 0.001 arc seconds or less. Comparisons are made between changes in the total flux densities of these sources and changes in the correlated flux densities from the interferometers. Resolution effects due to changes in structure on scales approximately equal to or greater than 0.001 arc seconds are evident in many cases, although some variable components remain smaller than this size. Examination of a complete sample of sources with centimeter-excess spectra shows a strong correlation between flux variations at 13 cm and the presence of compact structure. Author

Subject Categories:

  • Astrophysics
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE