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Quasi-periodic pulsations (QPPs) appear to be a common feature observed inthe light curves of both solar and stellar flares. However, theirquasi-periodic nature, along with the fact that they can be small in amplitudeand short-lived, makes QPPs difficult to unequivocally detect. In this paper,we test the strengths and limitations of state-of-the-art methods for detectingQPPs using a series of hare-and-hounds exercises. The hare simulated a set offlares, both with and without QPPs of a variety of forms, while the houndsattempted to detect QPPs in blind tests. We use the results of these exercisesto create a blueprint for anyone who wishes to detect QPPs in real solar andstellar data. We present eight clear recommendations to be kept in mind forfuture QPP detections, with the plethora of solar and stellar flare data fromnew and future satellites. These recommendations address the key pitfalls inQPP detection, including detrending, trimming data, accounting for colorednoise, detecting stationary-period QPPs, detecting QPPs with nonstationaryperiods, and ensuring that detections are robust and false detections areminimized. We find that QPPs can be detected reliably and robustly by a varietyof methods, which are clearly identified and described, if the appropriate careand due diligence are taken.

A blueprint of state-of-the-art techniques for detecting quasi-periodic pulsations in solar and stellar flares