Complementary constraints on dark energy equation of state from strongly lensed gravitational wave

Abstract

It has been shown that time delay of strong gravitational lensing is not only an effective cosmological probe to constrain the Hubble constant, the matter density and the curvature of the universe but also useful for breaking the degeneracy of the dark energy equation of state and thus provide complementarity with other popular probes, such as type Ia supernovae, baryon acoustic oscillations, and cosmic microwave background radiation. Interestingly, compared to traditional strong lensing systems where quasars act as sources, strongly lensed gravitational waves (GWs) from compact binary coalescence and their electromagnetic (EM) counterparts systems have been recently proposed to be more powerful for studying cosmology since GWs and their EM counterparts are transients. Short durations of GWs and their EM counterparts are very advantageous to time delay measurement and lens profile modeling. Here, in the framework of Chevalier-Polarski-Linder (CPL) parametrization, we investigate improvement of constraining power on dark energy equation of state due to including time delay measurements of strong lensed GW systems. It is suggested that, on the basis of the third generation ground-based detector, e.g. Einstein Telescope, adding time delay of only 30 strong lensed GW systems to type Ia supernovae and cosmic microwave background radiation can improve the dark energy figure of merit by a factor 2. For the traditional standard siren method where the uncertainties of luminosity distances of GWs are $\sim 10\%$, a few $\times 10^4$ events are expected to present similar constraints. In the precision cosmology era, this progress is of great significance for studying the nature of dark energy.

6 pages, 5 figures, 1 table, to appear in MNRAS

References in corpus (11)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
• H0LiCOW V. New COSMOGRAIL time delays of HE0435-1223: $H_0$ to 3.8% precision from strong lensing in a flat $\Lambda$CDM model
• Report of the Dark Energy Task Force
• Cosmological Constraints from Strong Gravitational Lensing in Galaxy Clusters
• Estimating cosmological parameters by the simulated data of gravitational waves from the Einstein Telescope
• Strong Lens Time Delay Challenge: II. Results of TDC1
• Figure of Merit for Dark Energy Constraints from Current Observational Data
• Cosmological parameters from strong gravitational lensing and stellar dynamics in elliptical galaxies
• Strong gravitational lensing of gravitational waves from double compact binaries - perspectives for the Einstein Telescope
• Strongly Lensed Gravitational Waves and Electromagnetic Signals as Powerful Cosmic Rulers

Cited by in corpus (11)

• Exploiting the Einstein Telescope to solve the Hubble tension
• Lensing of gravitational waves: universal signatures in the beating pattern
• Gravitational-wave cosmological distances in scalar-tensor theories of gravity
• Compact Binaries through a Lens: Silent vs. Detectable Microlensing for the LIGO-Virgo-KAGRA Gravitational Wave Observatories
• Constraining cosmological parameters from strong lensing with DECIGO and B-DECIGO sources
• Parameter estimation of microlensed gravitational waves with Conditional Variational Autoencoders
• Gaia Focused Product Release: A catalogue of sources around quasars to search for strongly lensed quasars
• Investigating the dynamical models of cosmology with recent observations and upcoming gravitational-wave data
• Bayesian Analysis of Wave-Optics Gravitationally Lensed Massive Black Hole Binaries with Space-Based Gravitational Wave Detector
• Parameter inference of millilensed gravitational waves using neural spline flows
• Probing modified gravitational wave propagation with strongly lensed coalescing binaries