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The first direct detection of gravitational waves was made in late 2015 withthe Advanced LIGO detectors. By prior arrangement, a worldwide collaboration ofelectromagnetic follow-up observers were notified of candidate gravitationalwave events during the first science run, and many facilities were engaged inthe search for counterparts. No counterparts were identified, which is in linewith expectations given that the events were classified as black hole - blackhole mergers. However these searches laid the foundation for similar follow-upcampaigns in future gravitational wave detector science runs, in which thedetection of neutron star merger events with observable electromagneticcounterparts is much more likely. Three alerts were issued to theelectromagnetic collaboration over the course of the first science run, whichlasted from September 2015 to January 2016. Two of these alerts were associatedwith the gravitational wave events since named GW150914 and GW151226. In thispaper we provide an overview of the Liverpool Telescope contribution to thefollow-up campaign over this period. Given the hundreds of square degreeuncertainty in the sky position of any gravitational wave event, efficientsearching for candidate counterparts required survey telescopes with large(~degrees) fields-of-view. The role of the Liverpool Telescope was to providefollow-up classification spectroscopy of any candidates. We followed candidatesassociated with all three alerts, observing 1, 9 and 17 candidatesrespectively. We classify the majority of the transients we observed assupernovae.

Liverpool Telescope follow-up of candidate electromagnetic counterparts during the first run of Advanced LIGO