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I present an empirical study of the properties of fast radio bursts (FRBs):Gigahertz-frequency, dispersed pulses of extragalactic origin. I focus myinvestigation on the sample of seventeen FRBs detected at the Parkes radiotelescope with largely self-consistent instrumentation. Of this sample, six aretemporally unresolved, eight exhibit evidence for scattering in inhomogeneousplasma, and five display potentially intrinsic temporal structure. Thecharacteristic scattering timescales at a frequency of 1 GHz range between0.005 ms and 32 ms; moderate evidence exists for a relation between FRBscattering timescales and dispersion measures. Additionally, I presentconstraints on the fluences of Parkes FRBs, accounting for their uncertainsky-positions, and use the multiple-beam detection of FRB 010724 (the Lorimerburst) to measure its fluence to be $800\pm400$ Jy ms. FRBs, including therepeating FRB 121102, appear to manifest with a plethora of characteristics,and it is uncertain at present whether they share a common class of progenitorobject, or arise from a selection of independent progenitors.

The observed properties of Fast Radio Bursts