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Flux densities for selected radio sources in the third Cambridge and Parkes catalogsстатья
- Авторы: Gorshkov A.G., Konnikova V.K.
- Журнал: SOVIET ASTRONOMY
- Том: 19
- Номер: 6
- Год издания: 1976
- Первая страница: 716
- Последняя страница: 722
- Аннотация: Flux densities at 8550 MHz are presented for 246 radio sources selected mainly from the 3CR and PKS catalogs. Spectral indices in the range from 1400 to 8550 MHz are determined for the quasars and the radio galaxies. A significant difference in mean spectral index and in the dispersion of spectral-index distribution is observed between radio galaxies and quasars from the PKS catalog, but not between those from the 3CR catalog. The difference is greater than that observed previously between 750 and 5000 MHz, because the spectra of the PKS quasars become statistically flatter with increasing frequency. Four sources are found to exhibit flux-density variations similar to those observed in BL Lac.
- Добавил в систему: Конникова Валентина Константиновна