Results from high-frequency all-sky search for continuous gravitational waves from small-ellipticity sources

Abstract

We present the results of an all-sky search for continuous gravitational wave signals with frequencies in the 1700-2000 Hz range from neutron stars with ellipticity of 1e-8. The search employs the Falcon analysis pipeline [citation 5] on LIGO O2 public data. Our results improve by a factor greater than 5 over [citation 11]. This is a huge leap forward: it takes an entirely new generation of gravitational wave detectors to achieve a 10-fold sensitivity increase over the previous generation [citation 12]. Within the probed frequency range and aside from the detected outliers, we can exclude neutron stars with ellipticity of 1e-8 within 65 pc of Earth. We set upper limits on the gravitational wave amplitude that hold even for worst-case signal parameters. New outliers are found, some of which we are unable to associate with any instrumental cause. If any were associated with a rotating neutron star, this would likely be the fastest neutron star today.

References in corpus (15)

• Data analysis of gravitational-wave signals from spinning neutron stars. I. The signal and its detection
• Discovering the QCD Axion with Black Holes and Gravitational Waves
• Black Hole Superradiance Signatures of Ultralight Vectors
• Black Hole Mergers and the QCD Axion at Advanced LIGO
• 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 constraints on ultra-light boson mass from searches for continuous gravitational waves
• Characterizing the continuous gravitational-wave signal from boson clouds around Galactic isolated black holes
• Evidence for a minimum ellipticity in millisecond pulsars
• Modelling neutron star mountains
• Sensitivity improvements in the search for periodic gravitational waves using O1 LIGO data
• Results from the first all-sky search for continuous gravitational waves from small-ellipticity sources
• On blind searches for noise dominated signals: a loosely coherent approach
• Loosely coherent searches for sets of well-modeled signals
• Fundamental physics and the absence of sub-millisecond pulsars

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• Search methods for continuous gravitational-wave signals from unknown sources in the advanced-detector era
• Possible Causes of False General Relativity Violations in Gravitational Wave Observations
• Status and perspectives of Continuous Gravitational Wave searches
• Modelling neutron star mountains in relativity
• Optimal Template Banks
• New searches for continuous gravitational waves from seven fast pulsars
• The search for continuous gravitational waves from small-ellipticity sources at low frequencies
• Application of a hierarchical MCMC follow-up to Advanced LIGO continuous gravitational-wave candidates
• A frequency resolved atlas of the sky in continuous gravitational waves
• Deep exploration for continuous gravitational waves at 171--172 Hz in LIGO second observing run data
• Use of Excess Power Method and Convolutional Neural Network in All-Sky Search for Continuous Gravitational Waves
• Results from an Einstein@Home search for continuous gravitational waves from G347.3 at low frequencies in LIGO O2 data
• Detection possibility of continuous gravitational waves from rotating magnetized neutron stars
• Early release of the expanded atlas of the sky in continuous gravitational waves
• Propagation of Axial and Polar Gravitational Waves in Kantowski-Sachs Universe
• The Fourier Transform of the Continuous Gravitational Wave Signal
• Opportunistic search for continuous gravitational waves from compact objects in long-period binaries
• Population synthesis and parameter estimation of neutron stars with continuous gravitational waves and third-generation detectors
• Efficient representations of upper limits and confidence intervals for experimental data
• On the propagation of gravitational waves in matter-filled Bianchi I universe
• Bayesian Framework to Follow-up Continuous Gravitational Wave Candidates from Deep Surveys
• Wave-optical effects in the microlensing of continuous gravitational waves by star clusters
• Modeling the Galactic Neutron Star Population for Use in Continuous Gravitational Wave Searches
• Differentiating between sharp and smoother phase transitions in neutron stars