Transverse Velocities with the Moving Lens Effect
Cosmology and Nongalactic Astrophysics
2019-08-14 v1 General Relativity and Quantum Cosmology
Abstract
Gravitational potentials which change in time induce fluctuations in the observed cosmic microwave background (CMB) temperature. Cosmological structure moving transverse to our line of sight provides a specific example known as the moving lens effect. Here we explore how the observed CMB temperature fluctuations combined with the observed matter over-density can be used to infer the transverse velocity of cosmological structure on large scales. We show that near-future CMB surveys and galaxy surveys will have the statistical power to make a first detection of the moving lens effect, and we discuss applications for the reconstructed transverse velocity.
Keywords
Cite
@article{arxiv.1812.03167,
title = {Transverse Velocities with the Moving Lens Effect},
author = {Selim C. Hotinli and Joel Meyers and Neal Dalal and Andrew H. Jaffe and Matthew C. Johnson and James B. Mertens and Moritz Münchmeyer and Kendrick M. Smith and Alexander van Engelen},
journal= {arXiv preprint arXiv:1812.03167},
year = {2019}
}
Comments
5 pages, 4 figures, comments welcome