SINGLETRANS, the search for single transits of small planets in TESS light curves.

TESS has found many new exoplanets and has enriched our knowledge in this field. Most of these exoplanets have relative short orbital periods due to the observation technique of TESS. A statistical comparison of the detected periodic transits in TESS light curves with the detected periodic transits in the longer KEPLER light curves reveals that TESS light curves should show many additional single transit events which are not detected so far. Single transits of Jupiter-size planets are regularly found while single transits of Neptune- or Earth-size planets are rarely detected. The detection of single transits can reveal long orbital period planet candidates attractive for follow-up observations, revisits or additional photometric observations (e.g. CHEOPS). The Rhenish Institute for Environmental Research, department of Planetary Research, at the University of Cologne (RIU-PF) is developing the dedicated pipeline SINGLETRANS to search for single transit events of small planets in light curves. SINGLETRANS is a wavelet based transient search algorithm and shall complement our well-established detection pipeline EXOTRANS. SINGLETRANS shall also detect quasi-periodic transits (planets showing strong TTV, circumbinary planets).