Correlated noise in networks of gravitational-wave detectors: subtraction and mitigation

Abstract

One of the key science goals of advanced gravitational-wave detectors is to observe a stochastic gravitational-wave background. However, recent work demonstrates that correlated magnetic fields from Schumann resonances can produce correlated strain noise over global distances, potentially limiting the sensitivity of stochastic background searches with advanced detectors. In this paper, we estimate the correlated noise budget for the worldwide Advanced LIGO network and conclude that correlated noise may affect upcoming measurements. We investigate the possibility of a Wiener filtering scheme to subtract correlated noise from Advanced LIGO searches, and estimate the required specifications. We also consider the possibility that residual correlated noise remains following subtraction, and we devise an optimal strategy for measuring astronomical parameters in the presence of correlated noise. Using this new formalism, we estimate the loss of sensitivity for a broadband, isotropic stochastic background search using 1 yr of LIGO data at design sensitivity. Given our current noise budget, the uncertainty with which LIGO can estimate energy density will likely increase by a factor of ~4--if it is impossible to achieve significant subtraction. Additionally, narrowband cross-correlation searches may be severely affected at low frequencies f < 45 Hz without effective subtraction.

16 pages, 8 figures

References in corpus (5)

• Gravitational wave stochastic background from cosmic (super)strings
• Gravitational-Wave Stochastic Background from Kinks and Cusps on Cosmic Strings
• Upper limit map of a background of gravitational waves
• Gravitational Waves from the First Stars
• Gravitational waves from cosmological phase transitions

Cited by in corpus (38)

• Upper Limits on the Isotropic Gravitational-Wave Background from Advanced LIGO's and Advanced Virgo's Third Observing Run
• LIGO Detector Characterization in the Second and Third Observing Runs
• Science with the TianQin Observatory: Preliminary Results on Stochastic Gravitational-Wave Background
• The Science of the Einstein Telescope
• Parameter estimation with gravitational waves
• Environmental Noise in Advanced LIGO Detectors
• Measuring the primordial gravitational-wave background in the presence of astrophysical foregrounds
• Searching for stochastic gravitational waves using data from the two co-located LIGO Hanford detectors
• Detecting a stochastic gravitational-wave background in the presence of correlated magnetic noise
• Common-spectrum process versus cross-correlation for gravitational-wave searches using pulsar timing arrays
• Accurate modeling and mitigation of overlapping signals and glitches in gravitational-wave data
• Impacts of overlapping gravitational-wave signals on the parameter estimation: Toward the search for cosmological backgrounds
• Stochastic gravitational wave background: methods and Implications
• Impact of Schumann resonances on the Einstein Telescope and projections for the magnetic coupling function
• Globally coherent short duration magnetic field transients and their effect on ground based gravitational-wave detectors
• pygwb: Python-based library for gravitational-wave background searches
• Detecting very long-lived gravitational-wave transients lasting hours to weeks
• Correlated 1-1000 Hz magnetic field fluctuations from lightning over earth-scale distances and their impact on gravitational wave searches
• Frequentist versus Bayesian analyses: Cross-correlation as an (approximate) sufficient statistic for LIGO-Virgo stochastic background searches
• Targeted search for the kinematic dipole of the gravitational-wave background
• Correlated 0.01Hz-40Hz seismic and Newtonian noise and its impact on future gravitational-wave detectors
• LIGO as a probe of Dark Sectors
• Impact of combinations of time-delay interferometry channels on stochastic gravitational wave background detection
• Formalism for power spectral density estimation for non-identical and correlated noise using the null channel in Einstein Telescope
• SCoRe: A New Framework to Study Unmodeled Physics from Gravitational Wave Data
• Constraints on Non-Gaussian primordial curvature perturbation from the LIGO-Virgo-KAGRA third observing run
• Distinguishing a stochastic gravitational-wave signal from correlated noise with joint parameter estimation: Fisher analysis for ground-based detectors
• Untargeted Bayesian search of anisotropic gravitational-wave backgrounds through the analytical marginalization of the posterior
• Model-independent search for anisotropies in stochastic gravitational-wave backgrounds and application to LIGO-Virgo's first three observing Runs
• Next-generation global gravitational-wave detector network: Impact of detector orientation on compact binary coalescence and stochastic gravitational-wave background searches
• Gravitational-wave searches in the era of Advanced LIGO and Virgo
• Observability of dynamical tides in merging eccentric neutron star binaries
• Accelerated inference of binary black-hole populations from the stochastic gravitational-wave background
• Magnetic Field Simulation and Correlated Low-Frequency Noise Subtraction for an In-Orbit Demonstrator of Magnetic Measurements
• Gravitational-Wave Geodesy: Defining False Alarm Probabilities with Respect to Correlated Noise
• Impact of correlated seismic and correlated Newtonian noise on the Einstein Telescope
• Probing the peak of star formation with the stochastic background of binary black hole mergers
• Distinguishing between dark-matter interactions with gravitational-wave detectors