The Flux Density Scale for radio Sources at 81{middle dot}5 MHz
Open Access
- 1 October 1971
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 154 (1) , 19P-23P
- https://doi.org/10.1093/mnras/154.1.19p
Abstract
The flux densities at 81.5 MHz of 13 radio sources have been carefully measured with respect to those of Cas A and Cyg A. It is found that the flux densities of the weaker sources are systematically larger, by 22.5 per cent on average, than the values interpolated from the spectra listed by Kellermann, Pauliny-Toth and Williams. This is consistent with earlier suggestions that the KPW scale is too low for frequencies less than 750 MHz and implies that the apparent flattening of the spectra of the majority of sources at about this frequency may be largely removed.Keywords
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