Optimization of the Euro-Asian network of gravitational detectors for detecting the radiation of collapsing objects

TL;DR

This paper evaluates and optimizes a Euro-Asian gravitational wave detector network, focusing on the Novosibirsk detector's orientation to enhance detection of signals from collapsing stars with angular momentum.

Contribution

It introduces an optimal orientation calculation for the Novosibirsk detector specifically targeting gravitational waves from collapsing stars with bar deformation.

Findings

Optimal detector orientation improves GW detection efficiency.

The known GW signal shape from bar deformation aids in optimization.

Network assessment criteria are applied to evaluate performance.

Abstract

A Euro-Asian network of four gravitational-wave (GW) interferometers is considered, taking into account the plan to create such a detector in Novosibirsk. The efficiency of the network is assessed by typical numerical criteria, which also depend on the characteristics of the received signal. In this work, we calculate the optimal orientation of the Novosibirsk detector for the problem of detecting GW radiation accompanying the collapse of the progenitor star with an initial angular momentum. The specificity of the scenario is the presence of the so-called. bar stage deformation, for which the shape of the emitted GW signal is known.