An algorithm to perform a stacked search for gravitational-wave transients from repeating burst sources

The third observing run (O3) of the LIGO, Virgo, and KAGRA collaborations included minimally-modeled searches for gravitational-wave transients associated with externally-triggered electromagnetic burst sources. A subset of these bursts have come from repeating sources, most notably galactic magnetars SGR 1935+2154 and Swift J1818-1607, as well as a handful of repeating Fast Radio Bursts. The O3 analyses place upper limits on both the gravitational-wave energy and strain of these bursts, and here we present a new version of the search algorithm that can do a 'stacked' search over multiple bursts from a common source. In this talk we describe the assumptions that the new algorithm is based on and the methods of handling the data. We also present preliminary estimates of the gains in sensitivity as a result of stacking, discuss the limitations of the algorithm, and explore options for its future use.