Search for gravitational wave signals from known pulsars in LIGO-Virgo O3 data using the 5n-vector ensemble method

Abstract

The 5n-vector ensemble method is a multiple test for the targeted search of continuous gravitational waves from an ensemble of known pulsars. This method can improve the detection probability combining the results from individually undetectable pulsars if few signals are near the detection threshold. In this paper, we apply the 5n-vector ensemble method to the O3 data set from the LIGO and Virgo detectors considering an ensemble of 201 known pulsars. We find no evidence for a signal from the ensemble and set a 95% credible upper limit on the mean ellipticity assuming a common exponential distribution for the pulsars' ellipticities. Using two independent hierarchical Bayesian procedures, we find upper limits of $1.2\times 10^{-9}$ and $2.5\times 10^{-9}$ on the mean ellipticity for the 201 analyzed pulsars.

References in corpus (28)

• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Advanced LIGO
• A New Electron Density Model for Estimation of Pulsar and FRB Distances
• Data analysis of gravitational-wave signals from spinning neutron stars. I. The signal and its detection
• Tempo2, a new pulsar timing package. II: The timing model and precision estimates
• NE2001.I. A New Model for the Galactic Distribution of Free Electrons and its Fluctuations
• An introduction to Bayesian inference in gravitational-wave astronomy: parameter estimation, model selection, and hierarchical models
• Models of Pulsar Glitches
• First search for gravitational waves from known pulsars with Advanced LIGO
• Gravitational waves from known pulsars: results from the initial detector era
• The MeerKAT Telescope as a Pulsar Facility: System verification and early science results from MeerTime
• Searches for Gravitational Waves from Known Pulsars at Two Harmonics in 2015-2017 LIGO Data
• TEMPO2, a new pulsar timing package. III: Gravitational wave simulation
• All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO and Advanced Virgo O3 data
• Evidence for a minimum ellipticity in millisecond pulsars
• The CHIME Pulsar Project: System Overview
• Searches for Gravitational Waves from Known Pulsars at Two Harmonics in the Second and Third LIGO-Virgo Observing Runs
• The UTMOST pulsar timing programme II: Timing noise across the pulsar population
• Validating gravitational-wave detections: The Advanced LIGO hardware injection system
• Directed searches for continuous gravitational waves from binary systems: parameter-space metrics and optimal Scorpius X-1 sensitivity
• The UTMOST pulsar timing programme I: overview and first results
• Status and perspectives of Continuous Gravitational Wave searches
• A new data analysis framework for the search of continuous gravitational wave signals
• A method for narrow-band searches of continuous gravitational wave signals
• Coherent search of continuous gravitational wave signals: extension of the 5-vectors method to a network of detectors
• Stochastic gravitational-wave background searches and constraints on neutron-star ellipticity
• Hierarchical Bayesian method for detecting continuous gravitational waves from an ensemble of pulsars
• Method to detect gravitational waves from an ensemble of known pulsars

Cited by in corpus (4)

• The Science of the Einstein Telescope
• Search for continuous gravitational waves from known pulsars in the first part of the fourth LIGO-Virgo-KAGRA observing run
• Two sides of the same coin: the F-statistic and the 5-vector method
• New semicoherent targeted search for continuous gravitational waves from pulsars in binary systems