Radio source contributions to small-scale anisotropies of the microwave background

Details Radio source contributions to small-scale anisotropies of the microwave background Radio source contributions to small-scale anisotropies of the microwave background

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...121..114d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 121, no. 1, May 1983, p. 114-118. Research supported by the Consiglio Nazional

Astronomy and Astrophysics

Astronomy

17

Radio Sources (Astronomy), Relic Radiation, Anisotropy, Extrapolation, Luminosity, Radio Spectra, Variations

Scientific paper

The authors present calculations of radio source contributions to anisotropies in the microwave background on angular scales 1arcmin ⪉ θ0 ⪉ 10°. The uncertainties are small for λ ≥ 6 cm and θ0 ⪆ 10arcmin, where the fluctuation level follows directly from the available counts, and probably do not exceed a factor of 2 over this whole range of angular scales for λ ≥ 2 cm. The authors find that for λ ⪆ 3 cm and 5arcmin ⪉ θ0 ⪉ 2° radio sources yield ΔT/T ⪆ 10-4 and therefore seriously limit the detectability of truly primordial anisotropies.

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