Gamma-ray bursts are associated with violent phenomena in the universe such as the collapse of massive stars or the coalescence of compact objects including a neutron star or a black hole. Discovered in the late 1970's, the field has been vitalized with the recent multi-messenger discovery of gravitational waves emitted from the merger of two neutron stars and its electromagnetic counterpart of the relativistic and thermal ejected matter (GRB, kilonova). In this talk, we will present the new challenge of the multi-messenger events in term of observations and data analysis. As a member of the LIGO/Virgo collaboration, I will briefly present the public alert system developed for O3 to send prompt alert to the astronomical community as soon as a GW candidate has been identified. I will also present the GRANDMA (Ground Rapid Advanced Network Devoted to Multi-messenger Addicts) composed of 25 robotic and wide-field telescopes spread all over the world. GRANDMA has the capacity to rapidly scan the sky localization area of gravitational-wave and gamma-ray bursts alerts in order to find the optical counterpart (kilonova or GRB afterglow). I will end my talk with the SVOM, a french-chinese satellite dedicated to GRB studies : especially, I will tackle new GRB detection methods that might be particularly useful to increase the GRB-GW detection rate.
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