Classifying RRATs and FRBs

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Abstract

In this paper, we consider the fact that the simple criterion used to label fast radio transient events as either fast radio bursts (FRBs, thought to be extragalactic with as yet unknown progenitors) or rotating radio transients (RRATs, thought to be Galactic neutron stars) is uncertain. We identify single pulse events reported in the literature which have never been seen to repeat, and which have been labelled as RRATs, but are potentially mislabelled FRBs. We examine the probability that such 'grey area' events are within the Milky Way. The uncertainty in the RRAT/FRB labelling criterion, as well as Galactic-latitude dependent reporting bias may be contributing to the observed latitude dependence of the FRB rate, in addition to effects such as Eddington bias due to scintillation.

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Keane, E. F. (2016). Classifying RRATs and FRBs. Monthly Notices of the Royal Astronomical Society, 459(2), 1360–1362. https://doi.org/10.1093/mnras/stw767

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