GW170817: implications for the local kilonova rate and for surveys from ground-based facilities

DOI: 
10.1093/mnras/sty2541
Publication date: 
01/09/2018
Main author: 
Valle, M. Della
IAA authors: 
Valle, M. Della;Izzo, L.;Perez-Torres, M. A.
Authors: 
Valle, M. Della;Guetta, D.;Cappellaro, E.;Amati, L.;Botticella, M. T.;Branchesi, M.;Brocato, E.;Izzo, L.;Perez-Torres, M. A.;Stratta, G.
Journal: 
Monthly Notices of the Royal Astronomical Society
Refereed: 
Yes
Publication type: 
Article
Pages: 
4355-4360
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 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.
Database: 
ADS
SCOPUS
URL: 
https://ui.adsabs.harvard.edu/#abs/2018MNRAS.481.4355D/abstract
ADS Bibcode: 
2018MNRAS.481.4355D
Keywords: 
gravitational waves;stars: gamma-ray burst: general;stars: supernovae: general