Steep Spectrum Radio Sources Showing Low Frequency Variability
The Bologna group has been carrying on a monitoring program at 408 MHz of more than a hundred sources since 1975. Among sources found to be variable or possibly variable (Fanti et al., 1983) a small sample (10) has steep spectrum (α∿ 0.6, S ∝ν-α) in the frequency range 0.4–15 GHz.
Unable to display preview. Download preview PDF.