Gravitational Wave Sirens as a Triple Probe of Dark Energy

Abstract

Gravitational wave standard sirens have been considered as precision distance indicators to high redshift; however, at high redshift standard sirens or standard candles such as supernovae suffer from lensing noise. We investigate lensing noise as a signal instead and show how measurements of the maximum demagnification (minimum convergence) probe cosmology in a highly complementary manner to the distance itself. Revisiting the original form for minimum convergence we quantify the bias arising from the commonly used approximation. Furthermore, after presenting a new lensing probability function we discuss how the width of the lensed standard siren amplitude distribution also probes growth of structure. Thus standard sirens and candles can serve as triple probes of dark energy, measuring both the cosmic expansion history and growth history.

arXiv comment7 pages, 5 figures; v2 minor changes matching published version

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Cited by in corpus (9)

• Holographic Dark Energy
• The Gravitational-Wave Physics
• Tests of General Relativity on Astrophysical Scales
• The Impact of Magnification and Size Bias on Weak Lensing Power Spectrum and Peak Statistics
• Constraining Cosmology with High Convergence Regions in Weak Lensing Surveys
• Weak lensing and the Dyer-Roeder approximation
• Cosmology with Standard Sirens: the Importance of the Shape of the Lensing Magnification Distribution
• Luminosity distance in Swiss cheese cosmology with randomized voids. II. Magnification probability distributions
• Weak Lensing Science, Surveys, and Systematics