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http://hdl.handle.net/20.500.12386/31849
Titolo: | GW170817: implications for the local kilonova rate and for surveys from ground-based facilities | Autori: | DELLA VALLE, Massimo Guetta, D. CAPPELLARO, Enrico AMATI, LORENZO BOTTICELLA, MARIA TERESA Branchesi, M. BROCATO, Enzo Izzo, L. Perez-Torres, M. A. STRATTA, MARIA GIULIANA |
Data pubblicazione: | 2018 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 481 | Fascicolo: | 4 | Da pagina:: | 4355 | Abstract: | We 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. | URI: | http://hdl.handle.net/20.500.12386/31849 | URL: | https://academic.oup.com/mnras/article/481/4/4355/5101464?login=true | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/sty2541 | Bibcode ADS: | 2018MNRAS.481.4355D | Fulltext: | open |
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