Method for all-sky searches of continuous gravitational wave signals using the frequency-Hough transform

Abstract

In this paper we present a hierarchical data analysis pipeline for all-sky searches of continuous gravitational wave signals, like those emitted by spinning neutron stars asymmetric with respect to the rotation axis, with unknown position, rotational frequency and spin-down. The core of the pipeline is an incoherent step based on a particularly efficient implementation of the Hough transform, that we call frequency-Hough, that maps the data time-frequency plane to the source frequency/spin-down plane for each fixed direction in the sky. Theoretical ROCs and sensitivity curves are computed and the dependency on various thresholds is discussed. A comparison of the sensitivity loss with respect to an "optimal" method is also presented. Several other novelties, with respect to other wide-parameter analysis pipelines, are also outlined. They concern, in particular, the construction of the grid in the parameter space, with over-resolution in frequency and parameter refinement, candidate selection and various data cleaning steps which are introduced to improve search sensitivity and rejection of false candidates.

27 pages, 20 figures, PRD in press

References in corpus (7)

• The Breaking Strain of Neutron Star Crust and Gravitational Waves
• Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data
• Exploiting Large-Scale Correlations to Detect Continuous Gravitational Waves
• Parameter-space correlations of the optimal statistic for continuous gravitational-wave detection
• Detection of periodic gravitational wave sources by Hough transform in the frequency and spin down plane
• A method for narrow-band searches of continuous gravitational wave signals
• Improved Hough search for gravitational wave pulsars

Cited by in corpus (52)

• Science with the Einstein Telescope: a comparison of different designs
• All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO O2 data
• Searches for Continuous-Wave Gravitational Radiation
• Recent searches for continuous gravitational waves
• First low-frequency Einstein@Home all-sky search for continuous gravitational waves in Advanced LIGO data
• All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO and Advanced Virgo O3 data
• The Science of the Einstein Telescope
• Searches for continuous gravitational waves from neutron stars: A twenty-year retrospective
• Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO--Virgo data
• Prospects for probing gravitational waves from primordial black hole binaries
• Search methods for continuous gravitational-wave signals from unknown sources in the advanced-detector era
• Status and perspectives of Continuous Gravitational Wave searches
• The Adaptive Transient Hough method for long-duration gravitational wave transients
• First search for ultralight dark matter with a space-based gravitational-wave antenna: LISA Pathfinder
• BinarySkyHough: a new method to search for continuous gravitational waves from unknown neutron stars in binary systems
• Gravitational wave probes of particle dark matter: a review
• Gravitational wave constraints on planetary-mass primordial black holes using LIGO O3a data
• Searching for spin-2 ULDM with gravitational waves interferometers
• Rapid parameter estimation for an all-sky continuous gravitational wave search using conditional varitational auto-encoders
• Continuous Gravitational Waves: A New Window to Look for Heavy Non-annihilating Dark Matter
• Enabling multi-messenger astronomy with continuous gravitational waves: early warning and sky localization of binary neutron stars in Einstein Telescope
• Applying the Viterbi Algorithm to Planetary-Mass Black Hole Searches
• Probing the pulsar explanation of the Galactic-Center GeV excess using continuous gravitational-wave searches
• Time-frequency track distance for comparing continuous gravitational wave signals
• Validating continuous gravitational-wave candidates from a semicoherent search using Doppler modulation and an effective point spread function
• Scalable data-analysis framework for long-duration gravitational waves from compact binaries using short Fourier transforms
• Search for continuous gravitational wave signals from luminous dark photon superradiance clouds with LVK O3 observations
• Assessing the impact of non-Gaussian noise on convolutional neural networks that search for continuous gravitational waves
• Gravitational Wave Searches for Post-Merger Remnants of GW170817 and GW190425
• Graphics processing unit implementation of the F-statistic for continuous gravitational wave searches
• All-sky Search for Periodic Gravitational Waves in the O1 LIGO Data
• Impact of signal clusters in wide-band searches for continuous gravitational waves
• Method to search for inspiraling planetary-mass ultra-compact binaries using the generalized frequency-Hough transform in LIGO O3a data
• A directed continuous-wave search from Scorpius X-1 with the five-vector resampling technique
• Gravitational-wave searches in the era of Advanced LIGO and Virgo
• Exposing Gravitational Waves below the Quantum Shot Noise
• New semicoherent targeted search for continuous gravitational waves from pulsars in binary systems
• Toward a computationally-efficient follow-up pipeline for blind continuous gravitational-wave searches
• One-stop strategy to search for long-duration gravitational-wave signals
• Harnessing the potential of PyStoch: detecting continuous gravitational waves from interesting supernova remnant targets
• Searches for Continuous Gravitational Waves from Supernova Remnants in the first part of the LIGO-Virgo-KAGRA Fourth Observing run
• Gravitational waves from sub-solar mass primordial black holes
• Doppler correlation-driven vetoes for the Frequency Hough analysis in continuous gravitational-wave searches
• Constraining the abundance of spinning deformed Galactic compact objects with continuous gravitational waves
• Constraints on gravitational waves from the 2024 Vela pulsar glitch
• Searching for continuous gravitational waves from highly deformed compact objects with DECIGO
• Learning to detect continuous gravitational waves: an open data-analysis competition
• BinaryGFH-v2: Improved method to search for gravitational waves from sub-solar-mass, ultra-compact binaries using the Generalized Frequency-Hough Transform
• Analysing one- and two-bit data to reduce memory requirements for F-statistic-based gravitational wave searches
• Prospects for detecting asteroid-mass primordial black holes in extreme mass-ratio inspirals with continuous gravitational waves
• Search for planetary-mass ultra-compact binaries using data from the first part of the LIGO--Virgo--KAGRA fourth observing run
• GFH-v2 Pipeline for Searches of Long-Transient Gravitational Waves from Newborn Magnetars