The identification of the electromagnetic(EM) counterpart of gravitational wave(GW) trigger in the sky localization is a very difficult task because of the large uncertainty. Two complementary approaches are used in order to search for EM counterpart of GW signal with a typical large sky localization uncertainty: wide-field tilling search on high probability GW region, e.g. Gravitational Wave Inaf Team(GRAWITA) project or pointed search of selected galaxies in high probability GW region, e.g. Distance Less Than 40 Mpc survey(DLT40) project.
Publication Source (Journal or Book title)
Proceedings of the International Astronomical Union
Yang, S., González, G., & Hynes, R. (2017). Gravitational wave optical counterpart searching based on GRAWITA and DLT40 project during LIGO O2 run. Proceedings of the International Astronomical Union, 13 (S338), 9-13. https://doi.org/10.1017/S1743921318000157