Transverse Velocities with the Moving Lens Effect

Selim C. Hotinli; Joel Meyers; Neal Dalal; Andrew H. Jaffe; Matthew C. Johnson; James B. Mertens; Moritz Münchmeyer; Kendrick M. Smith; Alexander Van Engelen

doi:10.1103/PhysRevLett.123.061301

Transverse Velocities with the Moving Lens Effect

Selim C. Hotinli, Joel Meyers, Neal Dalal, Andrew H. Jaffe, Matthew C. Johnson, James B. Mertens, Moritz Münchmeyer, Kendrick M. Smith, Alexander Van Engelen

Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Gravitational potentials that 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 overdensity, can be used to infer the transverse velocity of cosmological structures 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.

Original language	English (US)
Article number	061301
Journal	Physical review letters
Volume	123
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.123.061301
State	Published - Aug 6 2019

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.123.061301

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abstract = "Gravitational potentials that 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 overdensity, can be used to infer the transverse velocity of cosmological structures 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.",

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AU - Mertens, James B.

AU - Münchmeyer, Moritz

AU - Smith, Kendrick M.

AU - Van Engelen, Alexander

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AB - Gravitational potentials that 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 overdensity, can be used to infer the transverse velocity of cosmological structures 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.

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Transverse Velocities with the Moving Lens Effect

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