Do all FRBs repeat? Quantifying the Clustering Probability in Noisy Nonhomogeneous Spatial Data to Identify New Repeating Fast Radio Burst Sources and their implications

The detection of repetition from a fast radio burst (FRB) source instantly ruled out cataclysmic models for at least the repeating FRB population. Repeaters also offered the first opportunities for high-precision localization and multi-wavelength burst follow-up. In the ten years since this discovery, we have identified and characterized a diverse population of repeating FRB sources, their host galaxies, and their burst properties. Still, the question, "Do all FRBs repeat?" remains elusive. The Canadian Hydrogen Intensity Mapping Experiment's FRB search (CHIME/FRB) has discovered 95% of the known repeaters to date. In this talk, I'll walk through our repeater detection pipeline, which employs a Bayesian hierarchical non-homogeneous Poisson point-process framework, before introducing an upcoming sample of 30 new repeaters drawn from our catalog of more than 3,600 FRBs. Interestingly, the first FRB localized using the full CHIME/FRB Outrigger array appears energetically inconsistent with the known repeater population. I will discuss this result, along with other emerging lines of evidence, in our ongoing effort to address the question of whether all FRBs ultimately repeat.

point processes

hierarchical bayesian

astrostatistics

transients

spatial point processes