The Gaia DR2 provides a first list of suspected periodic short-timescale
candidates with periods below 0.5–1 day from about 22 months of Gaia photometry. This
section describes the methods and algorithms used for obtaining this list, as well as the
verification and validation performed on the obtained sample. All the details on the short
timescale analysis methods and results are extensively described in Roelens et al. (2018).