<i>Kepler K2</i> Campaign 9 – I. Candidate short-duration events from the first space-based survey for planetary microlensing

We present the first short-duration candidate microlensing events from Kepler K2 mission. From late April to early July 2016, Campaign 9 of obtained high temporal cadence observations over a 3.7 square degree region Galactic bulge. Its primary objectives were look for evidence free-floating planet (FFP) population using microlensing, and demonstrate feasibility space-based planetary surveys. Though is far optimal recently developed MCPM photometric pipeline enables us identify model events. describe our blind event-selection in detail use it recover 22 with effective timescales less than 10 days previously announced by OGLE KMTNet ground-based also announce five new One these caustic-crossing binary event, consistent bound modelled as such companion study. The other four have very short durations (effective 0.1 days) typical an Earth-mass FFP population. Whilst was not designed crowded-field photometry, K2C9 dataset clearly demonstrates conducting surveys towards