A weakly-parametric approach to stochastic background inference in LISA
arXiv:2311.12111 · doi:10.1103/PhysRevD.109.083029
Abstract
Detecting stochastic gravitational wave backgrounds (SGWBs) with The Laser Interferometer Space Antenna (LISA) is among the mission science objectives. Disentangling SGWBs of astrophysical and cosmological origin is a challenging task, further complicated by the noise level uncertainties. In this study, we introduce a Bayesian methodology to infer upon SGWBs, taking inspiration from Gaussian stochastic processes. We investigate the suitability of the approach for signal of unknown spectral shape. We do by discretely exploring the model hyperparameters, a first step towards a more efficient transdimensional exploration. We apply the proposed method to a representative astrophysical scenario: the inference on the astrophysical foreground of Extreme Mass Ratio Inspirals, recently estimated in~\cite{Pozzoli2023}. We find the algorithm to be capable of recovering the injected signal even with large priors, while simultaneously providing estimate of the noise level.
arXiv comment16 pages, 10 figures, 0 tables
References in corpus (45)
- SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
- Array Programming with NumPy
- The Gaia mission
- Gravitational Waves from Mergin Compact Binaries: How Accurately Can One Extract the Binary's Parameters from the Inspiral Waveform?
- The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background
- Search for an isotropic gravitational-wave background with the Parkes Pulsar Timing Array
- Searching for the nano-Hertz stochastic gravitational wave background with the Chinese Pulsar Timing Array Data Release I
- The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals
- The NANOGrav 15-year Data Set: Search for Signals from New Physics
- Gravitational-wave sensitivity curves
- Science with the space-based interferometer LISA. V: Extreme mass-ratio inspirals
- Sensitivity curves for searches for gravitational-wave backgrounds
- Science with the space-based interferometer eLISA. I: Supermassive black hole binaries
- BayesWave: Bayesian Inference for Gravitational Wave Bursts and Instrument Glitches
- The promise of multi-band gravitational wave astronomy
- Low-frequency gravitational radiation from coalescing massive black hole binaries in hierarchical cosmologies
- Probing the gravitational wave background from cosmic strings with LISA
- Reconstructing the spectral shape of a stochastic gravitational wave background with LISA
- FastEMRIWaveforms: New tools for millihertz gravitational-wave data analysis
- LISA for Cosmologists: Calculating the Signal-to-Noise Ratio for Stochastic and Deterministic Sources
- Time Delay Interferometry with Moving Spacecraft Arrays
- Time-Delay Interferometry
- Improved reconstruction of a stochastic gravitational wave background with LISA
- Nested Sampling with Normalising Flows for Gravitational-Wave Inference
- Detecting a Stochastic Gravitational Wave Background in the presence of a Galactic Foreground and Instrument Noise
- Characterizing the Galactic Gravitational Wave Background with LISA
- Characterization of the stochastic signal originating from compact binaries populations as measured by LISA
- The LISA verification binaries
- Gravitational wave background from extreme mass ratio inspirals
- The Galactic Gravitational wave foreground
- Populations of double white dwarfs in Milky Way satellites and their detectability with LISA
- Bayesian parameter estimation of stellar-mass black-hole binaries with LISA
- Eryn : A multi-purpose sampler for Bayesian inference
- Gravitational wave background from rotating neutron stars
- Stochastic gravitational wave background reconstruction for a non-equilateral and unequal-noise LISA constellation
- Uncovering gravitational-wave backgrounds from noises of unknown shape with LISA
- Identifying LISA verification binaries among the Galactic population of double white dwarfs
- Gravitational Waves from Double White Dwarfs as probes of the Milky Way
- Prospects for LISA to detect a gravitational-wave background from first order phase transitions
- Finding binary black holes in the Milky Way with LISA
- Primordial Gravitational Waves with LISA
- Parameter Estimation for Stellar-Origin Black Hole Mergers In LISA
- Detectability and parameter estimation of GWTC-3 events with LISA
- Stochastic background of gravitational waves from cosmological sources
- Stochastic gravitational wave background from supernovae in massive scalar-tensor gravity
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- Gravitational waves from first-order phase transitions in LISA: reconstruction pipeline and physics interpretation
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- Muffled Murmurs: Environmental effects in the LISA stochastic signal from stellar-mass black hole binaries
- Assessing the Impact of Unequal Noises and Foreground Modeling on SGWB Reconstruction with LISA
- Test for LISA foreground Gaussianity and stationarity: galactic white-dwarf binaries
- Gravitational wave energy spectral density properties from BPASS Galactic binary population in the Milky Way galaxy