Piecewise frequency model for searches for long-transient gravitational waves from young neutron stars

Abstract

In this work we characterise the performance of a new search technique designed to be sensitive to the remnants of binary neutron star systems. Sensitivity estimates of the new method on simulated data are competitive against those of other work. Previous searches for a gravitational-wave signal from a possible neutron star remnant of the binary neutron star merger event GW170817 have focused on short ($<500$~s) and long duration (2.5~hr -- 8~day) signals. To date, no such post-merger signal has been detected. We introduce a new piecewise model which has the flexibility to accurately follow gravitational-wave signals which are rapidly evolving in frequency, such as those which may be emitted from young neutron stars born from binary neutron star mergers or supernovae. We investigate the sensitivity and computational cost of this piecewise model when used in a fully coherent 1800-second $\mathcal{F}$-statistic search on simulated data containing possible signals from the GW170817 remnant. The sensitivity of the search using the piecewise model is determined using simulated data, with noise consistent with the LIGO second observing run. Across a 100--2000~Hz frequency band, the model achieves a peak sensitivity of $h_{\text{rss}}^{50\%}=4.4\times 10^{-23}{\text{Hz}}^{-1/2}$ at 200~Hz, competitive with other methods. The computational cost of conducting the search, over a bank of $1.1\times 10^{12}$ templates, is estimated at 10 days running on 100 CPU's.

arXiv comment16 pages, 11 figures, 2 tables

References in corpus (45)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Advanced LIGO
• GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run
• GW190425: Observation of a Compact Binary Coalescence with Total Mass $\sim 3.4M_{\odot }$
• Properties of the binary neutron star merger GW170817
• Data analysis of gravitational-wave signals from spinning neutron stars. I. The signal and its detection
• Search templates for gravitational waves from inspiraling binaries: Choice of template spacing
• Deformations of Accreting Neutron Star Crusts and Gravitational Wave Emission
• Measuring neutron-star properties via gravitational waves from binary mergers
• On the Maximum Mass of Differentially Rotating Neutron Stars
• Constraining the Equation of State of Neutron Stars from Binary Mergers
• Remnant massive neutron stars of binary neutron star mergers: Evolution process and gravitational waveform
• Coherent method for detection of gravitational wave bursts
• Modeling the complete gravitational wave spectrum of neutron star mergers
• Search for post-merger gravitational waves from the remnant of the binary neutron star merger GW170817
• Modelling magnetically deformed neutron stars
• Searching for periodic sources with LIGO
• The Hough transform search for continuous gravitational waves
• Differential Rotation in Neutron Stars: Magnetic Braking and Viscous Damping
• Mountains on Neutron Stars: Accreted vs. Non-Accreted crusts
• Structure and deformations of strongly magnetized neutron stars with twisted torus configurations
• Search for gravitational waves from a long-lived remnant of the binary neutron star merger GW170817
• Searching for gravitational waves from Cassiopeia A with LIGO
• The search for continuous gravitational waves: metric of the multi-detector F-statistic
• All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO and Advanced Virgo O3 data
• Gravitational-Wave Data Analysis. Formalism and Sample Applications: The Gaussian Case
• Targeted search for continuous gravitational waves: Bayesian versus maximum-likelihood statistics
• Hidden Markov model tracking of continuous gravitational waves from a neutron star with wandering spin
• Relativistic models of magnetars: structure and deformations
• Long gravitational-wave transients and associated detection strategies for a network of terrestrial interferometers
• Evidence for a minimum ellipticity in millisecond pulsars
• Template-based searches for gravitational waves: efficient lattice covering of flat parameter spaces
• Data analysis of gravitational-wave signals from spinning neutron stars. IV. An all-sky search
• What constraints on the neutron star maximum mass can one pose from GW170817 observations?
• Application of hidden Markov model tracking to the search for long-duration transient gravitational waves from the remnant of the binary neutron star merger GW170817
• Lattice template placement for coherent all-sky searches for gravitational-wave pulsars
• Search of the Early O3 LIGO Data for Continuous Gravitational Waves from the Cassiopeia A and Vela Jr. Supernova Remnants
• Detection of periodic gravitational wave sources by Hough transform in the frequency and spin down plane
• All-sky search for long-duration gravitational-wave transients in the second Advanced LIGO observing run
• The Adaptive Transient Hough method for long-duration gravitational wave transients
• Observational evidence for Extended Emission to GW170817
• Gravitational Waves from Pulsars and Their Braking Indices: The Role of a Time Dependent Magnetic Ellipticity
• Stochastic gravitational-wave background searches and constraints on neutron-star ellipticity
• Matched-filter study and energy budget suggest no detectable gravitational-wave 'extended emission' from GW170817

Cited by in corpus (4)

• Applications of machine learning in gravitational wave research with current interferometric detectors
• Scalable data-analysis framework for long-duration gravitational waves from compact binaries using short Fourier transforms
• Gravitational Wave Searches for Post-Merger Remnants of GW170817 and GW190425
• Assessing the similarity of continuous gravitational-wave signals to narrow instrumental artifacts