All-sky search for long-duration gravitational-wave bursts in the third Advanced LIGO and Advanced Virgo run

Abstract

After the detection of gravitational waves from compact binary coalescences, the search for transient gravitational-wave signals with less well-defined waveforms for which matched filtering is not well-suited is one of the frontiers for gravitational-wave astronomy. Broadly classified into "short" $\lesssim 1$\,s and "long" $\gtrsim 1$\,s duration signals, these signals are expected from a variety of astrophysical processes, including non-axisymmetric deformations in magnetars or eccentric binary black hole coalescences. In this work, we present a search for long-duration gravitational-wave transients from Advanced LIGO and Advanced Virgo's third observing run from April 2019 to March 2020. For this search, we use minimal assumptions for the sky location, event time, waveform morphology, and duration of the source. The search covers the range of $2\text{–}500$~s in duration and a frequency band of $24-2048$ Hz. We find no significant triggers within this parameter space; we report sensitivity limits on the signal strength of gravitational waves characterized by the root-sum-square amplitude $h_{\mathrm{rss}}$ as a function of waveform morphology. These $h_{\mathrm{rss}}$ limits improve upon the results from the second observing run by an average factor of 1.8.

References in corpus (23)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Multi-messenger Observations of a Binary Neutron Star Merger
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• GW190425: Observation of a Compact Binary Coalescence with Total Mass $\sim 3.4M_{\odot }$
• GW190521: A Binary Black Hole Merger with a Total Mass of $150M_{\odot }$
• Observation of gravitational waves from two neutron star-black hole coalescences
• Gravity Spy: Integrating Advanced LIGO Detector Characterization, Machine Learning, and Citizen Science
• Search for post-merger gravitational waves from the remnant of the binary neutron star merger GW170817
• LIGO Detector Characterization in the Second and Third Observing Runs
• GRB afterglow plateaus and Gravitational Waves: multi-messenger signature of a millisecond magnetar?
• Eccentric, nonspinning, inspiral, Gaussian-process merger approximant for the detection and characterization of eccentric binary black hole mergers
• Machine-learning non-stationary noise out of gravitational wave detectors
• Reducing Scattered Light in LIGO's Third Observing Run
• Fragmentation of Collapsar Disks and the Production of Gravitational Waves
• Gravitational waves from massive magnetars formed in binary neutron star mergers
• Long gravitational-wave transients and associated detection strategies for a network of terrestrial interferometers
• Noise Reduction in Gravitational-wave Data via Deep Learning
• On extreme transient events from rotating black holes and their gravitational wave emission
• Multi-messenger Extended Emission from the compact remnant in GW170817
• Enhancing the capabilities of LIGO time-frequency plane searches through clustering

Cited by in corpus (1)

• Low-latency gravitational wave alert products and their performance at the time of the fourth LIGO-Virgo-KAGRA observing run