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Title: Do all fast radio burst sources eventually repeat?
Plain: A few sources flash again and again while most have been seen once; they may be two kinds of object or one kind seen at different activity levels.
Precise: Determine whether apparently non-repeating FRBs form a distinct population or the low-activity tail of repeaters, using the distribution of per-source burst rates, burst morphology (repeaters are narrower in band and drift downward in frequency), dispersion measures and host properties. Answer: a statistical test on a complete survey sample that rejects a single population or bounds the fraction of truly one-off (cataclysmic) sources.
Settled by: Multi-year monitoring of a large CHIME/FRB sample that yields the repetition-rate distribution and its correlation with morphology.
Kind: well-posed
Answer type: yes-no
References: (empty)
Literature status: open
Status note: (empty)
Posed since: 2016