Determining Tangential Peculiar Velocities of Clusters of Galaxies using Gravitational Lensing

Abstract

We propose two new methods for measuring tangential peculiar velocities of rich clusters of galaxies. Our first method is based on weak gravitational lensing and takes advantage of the differing images of background galaxies caused by moving and stationary gravitational potentials. Our second method is based on measuring relative frequency shifts between multiple images of a single strongly lensed background galaxy. We illustrate this method using the example of galaxy cluster CL 0024+1654.

LateX, 4 pages, 2 figures, accepted for publication in Part 1 of The Astrophysical Journal

Cited by in corpus (20)

• From galactic bars to the Hubble tension: weighing up the astrophysical evidence for Milgromian gravity
• A fast and accurate method for computing the Sunyaev-Zeldovich signal of hot galaxy clusters
• Full-sky map of the ISW and Rees-Sciama effect from Gpc simulations
• The Integrated Sachs-Wolfe effect in $f(R)$ gravity
• Deflection of light and particles by moving gravitational lenses
• Cosmology with gravitationally lensed repeating Fast Radio Bursts
• Gravitational Deflection of Light and Massive Particle by a Moving Kerr-Newman Black Hole
• Analytical Derivation of Second-Order Deflection in Equatorial Plane of a Radially Moving Kerr-Newman Black Hole
• Pairwise Transverse Velocity Measurement with the Rees-Sciama Effect
• Tangential Velocity of the Dark Matter in the Bullet Cluster from Precise Lensed Image Redshifts
• Lyman alpha absorbers in motion: consequences of gravitational lensing for the cosmological redshift drift experiment
• Refined modelling of the radio SZ signal: kinematic terms, relativistic temperature corrections and anisotropies in the radio background
• Measuring Dark Matter Flows in Merging Clusters of Galaxies
• A method to measure a relative transverse velocity of source-lens-observer system using gravitational lensing of gravitational waves
• Measuring Transverse Motions for Nearby Galaxy Clusters
• On aberration in gravitational lensing
• The Instantaneous Redshift Difference of Gravitationally Lensed Images: Theory and Observational Prospects
• Kerr-Schild Form of the Exact Metric for a Constantly Moving Kerr Black Hole and Null Gravitational Deflection
• Peculiar velocity effects on the Hubble constant from time-delay cosmography
• Gravitational frequency shift of light in equatorial plane of a radially moving Schwarzschild black hole