Are fast radio bursts generated by cosmic string cusps?
  We revisit the idea that cosmic strings could source fast radio bursts by
taking into account Lorentz boosts and a weaker assumption about the scaling
law for the energy of particle decay. We show that the distance relation and
time scale, for a specific value of the scaling of energy, are still compatible
with observations. However, the event rate predicted by the model is too high
when compared to the data. We additionally show that a more realistic string,
with a finite thickness, further compounds the problem by prohibiting cusp
formation and point out how a superconducting wiggly string could circumvent
this issue.
