Dipole Anisotropy in Gravitational Wave Source Distribution

Abstract

Our local motion with respect to the cosmic frame of rest is believed to be dominantly responsible for the observed dipole anisotropy in the Cosmic Microwave Background Radiation (CMBR). We study the effect of this motion on the sky distribution of gravitational wave (GW) sources. We determine the resulting dipole anisotropy in GW source number counts, mass weighted number counts, which we refer to as mass intensity, and mean mass per source. The mass M dependence of the number density n(M) distribution of BBH is taken directly from the data. We also test the anisotropy in the observable mean mass per source along the direction of the CMB dipole. The current data sample is relatively small and consistent with isotropy. The number of sources required for this test is likely to become available in the near future.

References in corpus (43)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs
• Advanced LIGO
• GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run
• GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing, Sky Maps, and Basic Results
• The Cosmic Microwave Background Spectrum from the Full COBE/FIRAS Data Set
• Planck 2018 results. I. Overview and the cosmological legacy of Planck
• Binary Black Hole Mergers in the first Advanced LIGO Observing Run
• Bilby: A user-friendly Bayesian inference library for gravitational-wave astronomy
• Robust parameter estimation for compact binaries with ground-based gravitational-wave observations using the LALInference software library
• Challenges for $\Lambda$CDM: An update
• Binary Black Hole Population Properties Inferred from the First and Second Observing Runs of Advanced LIGO and Advanced Virgo
• Open data from the first and second observing runs of Advanced LIGO and Advanced Virgo
• Bayesian inference for compact binary coalescences with BILBY: Validation and application to the first LIGO--Virgo gravitational-wave transient catalogue
• Planck 2018 results. VII. Isotropy and Statistics of the CMB
• Rapid Bayesian position reconstruction for gravitational-wave transients
• Dipole Anisotropy in the COBE DMR First-Year Sky Maps
• A Test of the Cosmological Principle with Quasars
• Measuring the binary black hole mass spectrum with an astrophysically motivated parameterization
• Planck 2013 results. XXVII. Doppler boosting of the CMB: Eppur si muove
• GWTC-2.1: Deep Extended Catalog of Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run
• A Gravitational Wave Detector with Cosmological Reach
• Cosmic radio dipole from NVSS and WENSS
• Detection of the velocity dipole in the radio galaxies of the NRAO VLA Sky Survey
• The mass distribution of Galactic double neutron stars
• Large peculiar motion of the solar system from the dipole anisotropy in sky brightness due to distant radio sources
• Dipoles in the Sky
• The Large-Scale Smoothness of the Universe
• The Science Case for LIGO-India
• Dipole anisotropy in sky brightness and source count distribution in radio NVSS data
• Does Matter Matter? Using the mass distribution to distinguish neutron stars and black holes
• Searching for Large Scale Structure in Deep Radio Surveys
• Detecting the Cosmic Dipole Anisotropy in Large-Scale Radio Surveys
• The Scale of Cosmic Isotropy
• Searching for anisotropy in the distribution of binary black hole mergers
• The Large-Scale Structure of the X-ray Background and its Cosmological Implications
• Are stellar--mass binary black hole mergers isotropically distributed?
• An Isotropy Measurement with Gravitational Wave Observations
• Detection and estimation of the cosmic dipole with the Einstein Telescope and Cosmic Explorer
• Superhorizon perturbations: A possible explanation of the Hubble--Lemaître Tension and the Large Scale Anisotropy of the Universe
• Two-dimensional correlation function of binary black hole coalescences

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