The MBTA Pipeline for Detecting Compact Binary Coalescences in the Third LIGO-Virgo Observing Run

TL;DR

The paper presents the MBTA pipeline for detecting gravitational waves from compact binary coalescences during LIGO-Virgo's third observing run, highlighting its architecture, noise mitigation, and detection performance in low-latency and offline analyses.

Contribution

It introduces the MBTA pipeline's design and demonstrates its effectiveness in real-time and offline detection of gravitational wave signals in LIGO-Virgo data.

Findings

42 alerts issued during the third run with median latency of 36 seconds

Effective transient noise mitigation strategies implemented

Quantified detection performance through simulated signal injections

Abstract

We describe the Multi-Band Template Analysis (MBTA) search for gravitational waves signals from coalescences of compact objects in the LIGO-Virgo data, at the time of the third observing run (2019-2020), both for low-latency detections and for offline analysis. Details are given on the architecture and functioning of the pipeline, including transient noise mitigation strategies, parameter space for the searched signals, detection of candidates and evaluation of a false alarm rate associated to them. The performance of the low-latency search is demonstrated based on the LIGO-Virgo third observing run, during which MBTA has contributed to 42 alerts, submitting candidates with a median latency of 36 seconds. The performance of the offline search is illustrated on a subset of data collected during the second LIGO-Virgo observation run in 2017, and are quantified based on injections of simulated signal events on the same data.