A renewed search for radio emission from the variable $\gamma$-ray pulsar PSR J2021$+$4026

B. Shaw, B. W. Stappers, P. Weltevrede +3

We undertake the first targeted search at 1.5 GHz for radio emission from the variable $\gamma$-ray pulsar PSR J2021$+$4026. This radio-quiet pulsar assumes one of two stable $\gamma$-ray em…