A deep survey of selected regions for extragalactic sources at 4.85 GHz

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astronomical Catalogs, Extragalactic Radio Sources, Microwave Emission, Astronomical Coordinates, Flux Density, Isotropic Media, Position Errors

Scientific paper

Eleven selected regions of sky have been surveyed at an observing frequency of 4.85 GHz to limiting flux densities as low as 0.01 Jy. The surveys provide a sample of 118 sources for source counts from a solid angle of 0.00714 sterad. The resulting counts are in excellent agreement with those from a previously surveyed region. The combined counts show a smooth convergence below a flux density of about 0.15 Jy and indicate that the convergence becomes even steeper below a flux density of 0.02 Jy. No evidence for anisotropy is found.

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