Demagnified GWs from Cosmological Double Neutron Stars and GW Foreground Cleaning Around 1Hz
arXiv:0910.4812 · doi:10.1103/PhysRevD.80.103001
Abstract
Gravitational waves from cosmological double neutron star binaries can be significantly demagnified by strong gravitational lensing effect, and the proposed future missions such as BBO or DECIGO might miss some of the demagnified GW signals below a detection threshold. The undetectable binaries would form a GW foreground which might hamper detection of a very weak primordial GW signal. We discuss the outlook of this potential problem, using a simple model based on the singular-isothermal-sphere lens profile. Fortunately, it is expected that, for presumable merger rate of NS+NSs, the residual foreground would be below the detection limit Omega_{GW} ~ 10^{-16} realized with BBO/DECIGO by correlation analysis.
arXiv comment8 pages, 3 figures, to appear in PRD
References in corpus (23)
- Weak Gravitational Lensing
- Gravitational Wave Experiments and Early Universe Cosmology
- Signature of Gravity Waves in Polarization of the Microwave Background
- Possibility of Direct Measurement of the Acceleration of the Universe Using 0.1 Hz Band Laser Interferometer Gravitational Wave Antenna in Space
- A Probe of Primordial Gravity Waves and Vorticity
- Detecting a stochastic background of gravitational radiation: Signal processing strategies and sensitivities
- Detecting the Cosmic Gravitational Wave Background with the Big Bang Observer
- Wave Effects in Gravitational Lensing of Gravitational Waves from Chirping Binaries
- The Gravitational Wave Background from Cosmological Compact Binaries
- The Sensitivity of Ligo to a Stochastic Background, and its Dependance on the Detector Orientations
- Short GRB and binary black hole standard sirens as a probe of dark energy
- Direct detection of the inflationary gravitational wave background
- BBO and the Neutron-Star-Binary Subtraction Problem
- Stochastic Gravitational Wave Background from Cosmological Supernovae
- The Sloan Digital Sky Survey Quasar Lens Search. III. Constraints on Dark Energy from the Third Data Release Quasar Lens Catalog
- Correlation analysis of stochastic gravitational wave background around 0.1-1Hz
- Gravitational Waves from the First Stars
- Lensing and the Centers of Distant Early-Type Galaxies
- Effects of Ellipticity and Shear on Gravitational Lens Statistics
- Subtraction-noise projection in gravitational-wave detector networks
- Annual modulation of the Galactic binary confusion noise bakground and LISA data analysis
- Weak gravitational lensing in different cosmologies, using an algorithm for shear in three dimensions
- A method to measure a relative transverse velocity of source-lens-observer system using gravitational lensing of gravitational waves
Cited by in corpus (6)
- Detector configuration of DECIGO/BBO and identification of cosmological neutron-star binaries
- Cosmography with strong lensing of LISA gravitational wave sources
- Strong lensing of gravitational waves as seen by LISA
- Scientific Potential of DECIGO Pathfinder and Testing GR with Space-Borne Gravitational Wave Interferometers
- Impacts of overlapping gravitational-wave signals on the parameter estimation: Toward the search for cosmological backgrounds
- Gravitational-wave cosmological distances in scalar-tensor theories of gravity