Simultaneous detection rates of binary neutron star systems in advanced Virgo/LIGO and GRB detectors

TL;DR

This paper estimates the joint detection rates of binary neutron star mergers by gravitational wave observatories and gamma-ray burst detectors, highlighting potential detection frequencies and strategies to enhance observational success.

Contribution

It provides a novel estimation method for simultaneous detection rates of binary neutron star mergers using gravitational wave and gamma-ray observations, based on sGRB data.

Findings

Predicts a few joint detections over LIGO-Virgo's lifetime.

Suggests observational strategies to increase detection rates.

Applies results to other missions like SVOM and LOFT.

Abstract

The coalescence of two compact objects is a key target for the new gravitational wave observatories such as Advanced-Virgo (AdV), Advanced-LIGO (aLIGO) and KAGRA. This phenomenon can lead to the simultaneous detection of electromagnetic waves in the form of short GRBs (sGRBs) and gravitational wave transients. This will potentially allow for the first time access to the fireball and the central engine properties. We present an estimation of the detection rate of such events, seen both by a Swift-like satellite and AdV/ALIGO. This rate is derived only from the observations of sGRBs. We show that this rate, if not very high, predicts a few triggers during the whole life time of Advanced LIGO-Virgo. We discuss how to increase it using some dedicated observational strategies. We apply our results to other missions such as the SVOM French-Chinese satellite project or LOFT.