Search for continuous gravitational waves from Fomalhaut b in the second Advanced LIGO observing run with a hidden Markov model

Abstract

Results are presented from a semicoherent search for continuous gravitational waves from a nearby neutron star candidate, Fomalhaut b, using data collected in the second observing run of Advanced LIGO. The search is based on a hidden Markov model scheme, capable of tracking signal frequency evolution from the star's secular spin down and stochastic timing noise simultaneously. The scheme is combined with a frequency domain matched filter ($\mathcal{F}$-statistic), calculated coherently over five-day time stretches. The frequency band 100-1000 Hz is searched. After passing the above-threshold candidates through a hierarchy of vetoes, one candidate slightly above the 1% false alarm probability threshold remains for further scrutiny. No strong evidence of continuous waves is found. We present the strain upper limits in the full frequency band searched at 90% confidence level.

References in corpus (37)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs
• Advanced LIGO
• 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 $\sim 3.4M_{\odot }$
• Optical Images of an Exosolar Planet 25 Light Years from Earth
• Data analysis of gravitational-wave signals from spinning neutron stars. I. The signal and its detection
• GW190412: Observation of a Binary-Black-Hole Coalescence with Asymmetric Masses
• Open data from the first and second observing runs of Advanced LIGO and Advanced Virgo
• Gravitational Radiation Instability in Hot Young Neutron Stars
• An analysis of the timing irregularities for 366 pulsars
• The generalized F-statistic: multiple detectors and multiple GW pulsars
• All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO O2 data
• Identification and mitigation of narrow spectral artifacts that degrade searches for persistent gravitational waves in the first two observing runs of Advanced LIGO
• Direct Imaging Confirmation and Characterization of a Dust-Enshrouded Candidate Exoplanet Orbiting Fomalhaut
• Searching for gravitational waves from Cassiopeia A with LIGO
• The search for continuous gravitational waves: metric of the multi-detector F-statistic
• Recent searches for continuous gravitational waves
• Searches for Gravitational Waves from Known Pulsars at Two Harmonics in 2015-2017 LIGO Data
• How to adapt broad-band gravitational-wave searches for r-modes
• Search for gravitational waves from Scorpius X-1 in the first Advanced LIGO observing run with a hidden Markov model
• Search for ultralight bosons in Cygnus X-1 with Advanced LIGO
• Narrow-band search for gravitational waves from known pulsars using the second LIGO observing run
• Upper Limits on Gravitational Waves from Scorpius X-1 from a Model-Based Cross-Correlation Search in Advanced LIGO Data
• Searches for Continuous Gravitational Waves from Fifteen Supernova Remnants and Fomalhaut b with Advanced LIGO
• Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model
• Results from the first all-sky search for continuous gravitational waves from small-ellipticity sources
• Hidden Markov model tracking of continuous gravitational waves from young supernova remnants
• New HST data and modeling reveal a massive planetesimal collision around Fomalhaut
• Application of hidden Markov model tracking to the search for long-duration transient gravitational waves from the remnant of the binary neutron star merger GW170817
• Results from an Einstein@Home search for continuous gravitational waves from Cassiopeia A, Vela Jr. and G347.3
• Directed searches for continuous gravitational waves from twelve supernova remnants in data from Advanced LIGO's second observing run
• Search for gravitational waves from twelve young supernova remnants with a hidden Markov model in Advanced LIGO's second observing run
• A new veto for continuous gravitational wave searches
• The companion candidate near Fomalhaut - a background neutron star?
• Tracking continuous gravitational waves from a neutron star at once and twice the spin frequency with a hidden Markov model

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• Status and perspectives of Continuous Gravitational Wave searches
• New searches for continuous gravitational waves from seven fast pulsars
• Application of a hierarchical MCMC follow-up to Advanced LIGO continuous gravitational-wave candidates
• Empirically estimating the distribution of the loudest candidate from a gravitational-wave search
• Search for continuous gravitational waves from ten H.E.S.S. sources using a hidden Markov model
• First Constraining Upper Limits on Gravitational Wave Emission from NS 1987A in SNR 1987A
• Validating continuous gravitational-wave candidates from a semicoherent search using Doppler modulation and an effective point spread function
• Search for continuous gravitational waves from HESS~J1427-608 with a hidden Markov model
• Geometric Approach to Analytic Marginalisation of the Likelihood Ratio for Continuous Gravitational Wave Searches
• Searches for continuous gravitational waves from young supernova remnants in the early third observing run of Advanced LIGO and Virgo