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Discoveries of rotating radio transients and fast radio bursts (FRBs) in pulsar surveys suggest that further transient sources await discovery in archival data sets. Here we report on a single-pulse search for dispersed radio bursts over a wide range of Galactic latitudes ($|b| < 60^{\circ}$) in data previously searched for periodic sources by Burgay et al. We detected 20 of the 42 pulsars reported by Burgay et al. and one radio transient. No FRBs were discovered in this survey. Taking into account this null result, along with other recent surveys at Parkes, and correcting for detection sensitivity based on the search algorithms used in the analyses, we find that the all-sky FRB event rate for sources with peak fluxes $> 0.1$ Jy to be ${\cal R} = 3.3^{+5.0}_{-2.5} \times 10^3$ FRBs day$^{-1}$ sky$^{-1}$, where the uncertainties represent a $99\%$ confidence interval. While this rate is several times lower than inferred from previous studies, it is consistent with all systematic FRB searches at Parkes to date and does not require the need to postulate a dearth of FRBs at intermediate latitudes.

Source Citation

Rane, A., Lorimer, D. R., Bates, S. D., Mcmann, N., Mclaughlin, M. A., & Rajwade, K. (2016). A Search For Rotating Radio Transients And Fast Radio Bursts In The Parkes High-Latitude Pulsar Survey. Monthly Notices Of The Royal Astronomical Society, 455(2), 2207-2215.