A further measurement of the 38-MHz flux density of Cas A

Abstract

Following the recent measurements of an anomalous increase in the flux density of Cas A at 38 MHz, a further measurement has been made approximately one year later. The result indicates a substantial reduction in the flux density of Cas A at this frequency, suggesting that a bright radio flare with a timescale of between 2 and 6 years has occurred at low frequencies.