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

Della Valle, M. ; Guetta, D. ; Cappellaro, E. ; Amati, L. ; Botticella, M.T. ; Branchesi, M. ; Brocato, E. ; Izzo, L. ; Perez-Torres, M.A. (Universidad de Zaragoza) ; Stratta, G.

Resumen: 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 RKN~352+810-281 Gpc-3¿yr-1. 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-3¿yr-1, 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 ¿ ¿ 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.

Idioma: Inglés

DOI: 10.1093/mnras/sty2541

Año: 2018

Publicado en: Monthly Notices of the Royal Astronomical Society 481, 4 (2018), 4355-4360
ISSN: 0035-8711

Factor impacto JCR: 5.231 (2018)

Categ. JCR: ASTRONOMY & ASTROPHYSICS rank: 15 / 69 = 0.217 (2018) - Q1 - T1

Factor impacto SCIMAGO: 2.422 - Space and Planetary Science (Q1) - Astronomy and Astrophysics (Q1)

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Teórica (Dpto. Física Teórica)