DELLA VALLE, MassimoMassimoDELLA VALLEGuetta, D.D.GuettaCAPPELLARO, EnricoEnricoCAPPELLAROAMATI, LORENZOLORENZOAMATIBOTTICELLA, MARIA TERESAMARIA TERESABOTTICELLABranchesi, M.M.BranchesiBROCATO, EnzoEnzoBROCATOIzzo, L.L.IzzoPerez-Torres, M. A.M. A.Perez-TorresSTRATTA, MARIA GIULIANAMARIA GIULIANASTRATTA2022-03-242022-03-2420180035-8711http://hdl.handle.net/20.500.12386/31849We compute the local rate of events similar to GRB 170817A, which has been recently found to be associated with a kilonova (KN) outburst. Our analysis finds an observed rate of such events of R_KN∼ 352^{+810}_{-281} Gpc<SUP>-3</SUP> yr<SUP>-1</SUP>. After comparing at their face values this density of sGRB outbursts with the much higher density of binary neutron star (BNS) mergers of 1540^{+3200}_{-1220} Gpc<SUP>-3</SUP> yr<SUP>-1</SUP>, estimated by LIGO-Virgo collaboration, one can conclude, admittedly with large uncertainty that either only a minor fraction of BNS mergers produces short gamma-ray bursts (sGRB)/KN events or the sGRBs associated with BNS mergers are beamed and observable under viewing angles as large as θ ≲ 40°. Finally, we provide preliminary estimates of the number of sGRB/KN events detected by future surveys carried out with present/future ground-based/space facilities, such as LSST, VST, ZTF, SKA, and THESEUS.STAMPAenGW170817: implications for the local kilonova rate and for surveys from ground-based facilitiesArticle10.1093/mnras/sty25412-s2.0-85054751065https://academic.oup.com/mnras/article/481/4/4355/5101464?login=true2018MNRAS.481.4355DFIS/05 - ASTRONOMIA E ASTROFISICA