Mapping Incoherent Gravitational Wave Backgrounds
arXiv:1806.11360 · doi:10.1093/mnras/sty2546
Abstract
Given the recent detection of gravitational waves from individual sources it is almost a certainty that some form of background of gravitational waves will be detected in future. The most promising candidate for such a detection are backgrounds made up of incoherent superposition of the signal of unresolved astrophysical or, backgrounds sourced by earlier cosmological events. Such backgrounds will also contain anisotropies about an average value. The information contained in the background level and any anisotropies will be extremely valuable as an astrophysical and cosmological probe. As such, the ability to reconstruct sky maps of the signal will become important as the sensitivity increases. We build and test a pixel--based, maximum--likelihood Gravitational Wave Background (GWB) map-maker that uses the cross-correlation of sets of generalised baselines as input. The resulting maps are a representation of the GWB power, or strain "intensity" on the sky. We test the algorithm by reconstructing known input maps with different baseline configurations. We also apply the map-maker to a subset of the Advance LIGO data.
13 pages
References in corpus (11)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- GW170104: Observation of a 50-Solar-Mass Binary Black Hole Coalescence at Redshift 0.2
- Upper Limits on the Stochastic Gravitational-Wave Background from Advanced LIGO's First Observing Run
- Non-standard neutrino interactions in reactor and superbeam experiments
- Directional limits on persistent gravitational waves from Advanced LIGO's first observing run
- Mapping gravitational-wave backgrounds using methods from CMB analysis: Application to pulsar timing arrays
- Anisotropy of the astrophysical gravitational wave background: analytic expression of the angular power spectrum and correlation with cosmological observations
- Gravitational wave radiometry: Mapping a stochastic gravitational wave background
- Polarization analysis of gravitational-wave backgrounds from the correlation signals of ground-based interferometers: measuring a circular-polarization mode
- Primordial Gravitational Waves with LISA
- Unsqueezing of standing waves due to inflationary domain structure
Cited by in corpus (36)
- Science Case for the Einstein Telescope
- Upper Limits on the Isotropic Gravitational-Wave Background from Advanced LIGO's and Advanced Virgo's Third Observing Run
- Search for anisotropic gravitational-wave backgrounds using data from Advanced LIGO and Advanced Virgo's first three observing runs
- Probing Anisotropies of the Stochastic Gravitational Wave Background with LISA
- Directional limits on persistent gravitational waves using data from Advanced LIGO's first two observing runs
- Properties of the stochastic astrophysical gravitational wave background: astrophysical sources dependencies
- Estimating the angular power spectrum of the gravitational-wave background in the presence of shot noise
- The of gravitational wave background experiments
- Maximum likelihood map-making with the Laser Interferometer Space Antenna
- Cross-correlating Astrophysical and Cosmological Gravitational Wave Backgrounds with the Cosmic Microwave Background
- Stochastic gravitational wave background anisotropies in the mHz band: astrophysical dependencies
- Polarization of a stochastic gravitational wave background through diffusion by massive structures
- Improved limits on a stochastic gravitational-wave background and its anisotropies from Advanced LIGO O1 and O2 runs
- Insights into searches for anisotropies in the nanohertz gravitational-wave background
- Stochastic gravitational wave background: methods and Implications
- Mapping the Gravitational-wave Sky with LISA: A Bayesian Spherical Harmonic Approach
- Non-Gaussian Stochastic Gravitational Waves from Phase Transitions
- On the Amplitude and Stokes Parameters of a Stochastic Gravitational-Wave Background
- Gravitational Wave Background Sky Maps from Advanced LIGO O1 Data
- Phase decoherence of gravitational wave backgrounds
- Searching for anisotropic stochastic gravitational-wave backgrounds with constellations of space-based interferometers
- Measuring kinematic anisotropies with pulsar timing arrays
- Detectability of the cross-correlation between CMB lensing and stochastic GW background from compact object mergers
- Templated Anisotropic Analyses of the LISA Galactic Foreground
- A Stochastic Gravitational Wave Background in LISA from Unresolved White Dwarf Binaries in the Large Magellanic Cloud
- All-sky analysis of astrochronometric signals induced by gravitational waves
- Model-independent search for anisotropies in stochastic gravitational-wave backgrounds and application to LIGO-Virgo's first three observing Runs
- Gravitational-wave searches in the era of Advanced LIGO and Virgo
- Unbiased estimation of gravitational-wave anisotropies from noisy data
- Frequency-Domain Distribution of Astrophysical Gravitational-Wave Backgrounds
- Life of cosmological perturbations in MDR models, and the prospect of travelling primordial gravitational waves
- Gravito-optics and intensity correlations for binary inspiral signal detections
- Estimating the gravitational wave background anisotropy: a Bayesian approach boosted by cross-correlation angular power spectrum
- Antipodal Angular Correlations of Inflationary Stochastic Gravitational Wave Background
- Model-agnostic gravitational-wave background characterization algorithm
- Comparison of maximum likelihood mapping methods for gravitational-wave backgrounds