Spectra and Variability of a Sample of JVAS Sources

Abstract

© 2019, Pleiades Publishing, Ltd. We present the results of RATAN-600 observations of a sample of strong (S > 0.5 Jy) flatspectrum sources from the JVAS catalog at 10. ◦ 5–18◦ (J2000) declinations in 2015, 2016, and 2017 at the frequencies of 2.3, 4.7, 8.2, 11.2, and 21.7 GHz. We have obtained spectra of all 45 sources and isolated sources with significant variations. Four sources were found for the first time to have variations with typical time scales of 8 to 35 days. Spectra of the variable components have also been obtained.