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2nd of June 2016
Properties of low-frequency pulsars
by Martin Bell (CASS)
A recently accepted paper by Bell et al. (2016) entitled "Time-domain and spectral properties of low frequency pulsars" explores Southern hemisphere pulsars using the Murchison Widefield Array. Over a number of years the flux densities of all Southern hemisphere pulsars where monitored via imaging observations. Out of a bright sample of 17, one pulsar in particular J0953+0755 (shown in the figure) displayed extreme variability associated with diffractive scintillation in the interstellar medium. The left panel shows the light curve of this pulsar from full bandwidth continuum images, while the right panel shows the dynamic spectrum where the pulsar is undetected in certain frequency chunks and as bright as ~50 Jy in others.

Reference: Bell, Murphy, Johnston et al. 2016, MNRAS, in press

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