Improved short-segment detection statistic for continuous gravitational waves

Abstract

Continuous gravitational waves represent one of the long-sought types of signals that have yet to be detected. Due to their small amplitude, long observational datasets (months-years) have to be analyzed together, thereby vastly increasing the computational cost of these searches. All-sky searches face the most severe computational obstacles, especially searches for sources in unknown binary systems, which need to break the data into very short segments in order to be computationally feasible. In this paper, we present a new detection statistic that improves sensitivity by up to 19% compared to the standard $\mathcal{F}$-statistic for segments shorter than a few hours.

arXiv comment11 pages

References in corpus (18)

• Data analysis of gravitational-wave signals from spinning neutron stars. I. The signal and its detection
• Searching for periodic sources with LIGO. II: Hierarchical searches
• The Hough transform search for continuous gravitational waves
• The generalized F-statistic: multiple detectors and multiple GW pulsars
• The search for continuous gravitational waves: metric of the multi-detector F-statistic
• Targeted search for continuous gravitational waves: Bayesian versus maximum-likelihood statistics
• Postprocessing methods used in the search for continuous gravitational-wave signals from the Galactic Center
• Fast and Accurate Sensitivity Estimation for Continuous-Gravitational-Wave Searches
• Search for continuous gravitational waves: Improving robustness versus instrumental artifacts
• Estimating the sensitivity of wide-parameter-space searches for gravitational-wave pulsars
• Search for Continuous Gravitational Waves: Optimal StackSlide method at fixed computing cost
• Searching for gravitational waves from known pulsars using the $\mathcal{F}$ and $\mathcal{G}$ statistics
• Optimal directed searches for continuous gravitational waves
• New Coordinates for the Amplitude Parameter Space of Continuous Gravitational Waves
• Optimally setting up directed searches for continuous gravitational waves in Advanced LIGO O1 data
• An Analytic Approximation to the Bayesian Detection Statistic for Continuous Gravitational Waves
• Geometric Approach to Analytic Marginalisation of the Likelihood Ratio for Continuous Gravitational Wave Searches
• Constraints on r-modes and mountains on millisecond neutron stars in binary systems

Cited by in corpus (2)

• Searches for Continuous-Wave Gravitational Radiation
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