The spectra of some discrete radio sources in 10?5000 MHz frequency range

Autor: B. P. Ryabov, S. Ya. Braude, A. V. Megn, I. N. Zhouck
Rok vydání: 1970
Předmět:
Zdroj: Astrophysics and Space Science. 8:275-322
ISSN: 1572-946X
0004-640X
DOI: 10.1007/bf00650891
Popis: On the basis of the absolute measurements in the 12.6–25 MHz frequency range and the relative measurements at frequencies 750, 1400, 2695 and 5000 MHz (NRAO) and 408, 1410 and 2650 MHz (Parkes), 57 standard spectra were obtained which are linear (on a log-log scale) in the range 12.6–5000 MHz. The comparison of the flux densities presented in the surveys at 10.03, 22.25, 26.3, 38, 86 and 178 MHz and the standard spectra was carried out and thus the correction coefficient was calculated. It was shown that the scale of absolute fluxes CKL on the frequencies 38 and 178 MHz is lowered on 28% and 8% respectively. The possible sources of divergences of the results of measurements in decametric wavelength is discussed. Making use of the corrected data at 38 MHz and 178 MHz, of the results at higher frequencies mentioned above and of the original results of measurements in the 12.6–25 MHz range, the spectra of 55 discrete sources were constructed. The spectra of 149 sources are also obtained on the basis of the surveys at 10.03, 22.25, 26.3, 38 and 178 MHz corrected according to standard spectra.
Databáze: OpenAIRE
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