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arXiv · 1812.03167

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
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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.

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Selim C. Hotinli, Joel Meyers, Neal Dalal, Andrew H. Jaffe, Matthew C. Johnson, James B. Mertens, Moritz Münchmeyer, Kendrick M. Smith, Alexander van Engelen. 2018-12-07. Transverse Velocities with the Moving Lens Effect. https://doi.org/10.1103/physrevlett.123.061301

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