Detecting gravitational waves from inspiraling binaries with a network of geographically separated detectors: coherent versus coincident strategies

Abstract

We compare two strategies of multi-detector detection of compact binary inspiral signals, namely, the coincidence and the coherent for the realistic case of geographically separated detectors.We compare the performances of the methods by plotting the receiver operating characteristics (ROC) for the strategies. Several results are derived analytically in order to gain insight. Simulations are performed in order to plot the ROC curves. A single astrophysical source as well as a distribution of sources is considered. We find that the coherent strategy is superior to the two coincident strategies that we consider. Remarkably, the detection probability of the coherent strategy is 50% better than the naive coincident strategy. One the other hand, difference in performance between the coherent strategy and enhanced coincident strategy is not very large. Even in this situation, it is not difficult to perform the real data analysis with the coherent strategy. The bottom line is that the coherent strategy is a good detection strategy.

References in corpus (6)

• Search for Gravitational Waves from Low Mass Binary Coalescences in the First Year of LIGO's S5 Data
• Search for Gravitational Waves from Low Mass Compact Binary Coalescence in 186 Days of LIGO's fifth Science Run
• A geometric algorithm for efficient coincident detection of gravitational waves
• Detecting gravitational waves from inspiraling binaries with a network of detectors : coherent versus coincident strategies
• Results of the search for inspiraling compact star binaries from TAMA300's observation in 2000-2004
• Detecting gravitational waves from inspiraling binaries with a network of detectors : coherent strategies by correlated detectors

Cited by in corpus (5)

• Networks of gravitational wave detectors and three figures of merit
• A fully-coherent all-sky search for gravitational-waves from compact binary coalescences
• Hierarchical search strategy for the efficient detection of gravitational waves from non-precessing coalescing compact binaries with aligned-spins
• Performance comparison of multi-detector detection statistics in targeted compact binary coalescence GW search
• Coherent versus coincidence detection of gravitational wave signals from compact inspiraling binaries