No CrossRef data available.
Published online by Cambridge University Press: 07 August 2017
A sample of more than 100 southern QSOs is being monitored for flux density variations by the Molonglo Observatory Synthesis Telescope (MOST). Provisional results for an interval of 4 years shows that the variability at 843 MHz is less than at 408 MHz. There seems to be a real ‘mid-frequency gap’ with little variability near 1 GHz.