First low-frequency Einstein@Home all-sky search for continuous gravitational waves in Advanced LIGO data

Abstract

We report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the first Advanced LIGO observing run. This search investigates the low frequency range of Advanced LIGO data, between 20 and 100 Hz, much of which was not explored in initial LIGO. The search was made possible by the computing power provided by the volunteers of the Einstein@Home project. We find no significant signal candidate and set the most stringent upper limits to date on the amplitude of gravitational wave signals from the target population, corresponding to a sensitivity depth of 48.7 [1/$\sqrt{\text{Hz}}$]. At the frequency of best strain sensitivity, near 100 Hz, we set 90% confidence upper limits of $1.8\times 10^{-25}$. At the low end of our frequency range, 20 Hz, we achieve upper limits of $3.9\times 10^{-24}$. At 55 Hz we can exclude sources with ellipticities greater than $10^{-5}$ within 100 pc of Earth with fiducial value of the principal moment of inertia of $10^{38}{\text{kg m}}^2$.

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• Advanced LIGO
• LIGO: The Laser Interferometer Gravitational-Wave Observatory
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• A new veto for continuous gravitational wave searches

Cited by in corpus (12)

• All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO O2 data
• All-sky Search for Continuous Gravitational Waves from Isolated Neutron Stars in the Early O3 LIGO Data
• Search methods for continuous gravitational-wave signals from unknown sources in the advanced-detector era
• Search for gravitational waves from five low mass X-ray binaries in the second Advanced LIGO observing run with an improved hidden Markov model
• Core collapse in massive scalar-tensor gravity
• A new veto for continuous gravitational wave searches
• Loosely coherent search in LIGO O1 data for continuous gravitational waves from Terzan 5 and the galactic center
• Hidden Markov model tracking of continuous gravitational waves from a neutron star with wandering spin. III. Rotational phase tracking
• Three approaches for the classification of protoneutron star oscillation modes
• Optimising the choice of analysis method for all-sky searches for continuous gravitational waves with Einstein@Home
• Time-frequency track distance for comparing continuous gravitational wave signals
• Gravitational-wave searches in the era of Advanced LIGO and Virgo