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The kinetic Sunyaev Zel'dovich (kSZ) effect is a blackbody cosmic microwave background (CMB) temperature anisotropy induced by Thomson scattering off free electrons in bulk motion with respect to the CMB rest frame. The statistically…

Cosmology and Nongalactic Astrophysics · Physics 2026-05-11 Richard Bloch , Matthew C. Johnson

The power spectrum of reconstructed cosmic microwave background (CMB) lensing maps is a powerful tool for constraints on cosmological parameters like the sum of the neutrino masses and the dark energy equation of state. One possible…

Cosmology and Nongalactic Astrophysics · Physics 2022-02-23 Hongbo Cai , Mathew S. Madhavacheril , J. Colin Hill , Arthur Kosowsky

The kinetic Sunyaev Zel'dovich (kSZ) effect, cosmic microwave background (CMB) anisotropies induced by scattering from free electrons in bulk motion, is a primary target of future CMB experiments. Measurements of the kSZ effect have the…

Cosmology and Nongalactic Astrophysics · Physics 2018-09-12 Juan I. Cayuso , Matthew C. Johnson , James B. Mertens

The kinetic Sunyaev Zel'dovich (kSZ) effect, cosmic microwave background (CMB) temperature anisotropies induced by scattering of CMB photons from free electrons, forms the dominant blackbody component of the CMB on small angular scales.…

Cosmology and Nongalactic Astrophysics · Physics 2020-12-01 Fiona McCarthy , Matthew C. Johnson

The kinetic Sunyaev-Zel'dovich (kSZ) effect is a secondary cosmic microwave background (CMB) anisotropy induced by the scattering of CMB photons off intervening electrons. Through cross-correlations with tracers of large-scale structure,…

Cosmology and Nongalactic Astrophysics · Physics 2021-04-28 Gabriela Sato-Polito , José Luis Bernal , Kimberly K. Boddy , Marc Kamionkowski

Gravitational lensing of the cosmic microwave background (CMB) is expected to be amongst the most powerful cosmological tools for ongoing and upcoming CMB experiments. In this work, we investigate a bias to CMB lensing reconstruction from…

Cosmology and Nongalactic Astrophysics · Physics 2018-01-26 Simone Ferraro , J. Colin Hill

The cosmic microwave background (CMB) photons that scatter off free electrons in the large-scale structure induce a linear polarization pattern proportional to the remote CMB temperature quadrupole observed in the electrons' rest frame. The…

Cosmology and Nongalactic Astrophysics · Physics 2022-10-12 Selim C. Hotinli , Gilbert P. Holder , Matthew C. Johnson , Marc Kamionkowski

The cosmic velocity field is an unbiased probe of the total matter distribution but is challenging to measure directly at intermediate and high redshifts. The large-scale velocity field imprints a signal in the cosmic microwave background…

Cosmology and Nongalactic Astrophysics · Physics 2024-11-20 Alex Laguë , Mathew S. Madhavacheril , Kendrick M. Smith , Simone Ferraro , Emmanuel Schaan

Kinetic Sunyaev Zel'dovich velocity reconstruction uses the statistically anisotropic cross-correlation between cosmic microwave background (CMB) temperature anisotropies and a galaxy survey to reconstruct the remotely observed CMB dipole.…

Cosmology and Nongalactic Astrophysics · Physics 2024-08-13 Jordan Krywonos , Selim C. Hotinli , Matthew C. Johnson

We develop an optimization-based maximum likelihood approach to analyze the cross-correlation of the Cosmic Microwave Background (CMB) and large-scale structure induced by the kinetic Sunyaev-Zeldovich (kSZ) effect. Our main goal is to…

Cosmology and Nongalactic Astrophysics · Physics 2024-03-01 Yurii Kvasiuk , Moritz Münchmeyer

Measurements of the Cosmic Microwave Background (CMB) temperature anisotropies on large angular scales have uncovered a number of anomalous features of marginal statistical significance, such as a hemispherical power asymmetry, lack of…

Cosmology and Nongalactic Astrophysics · Physics 2020-07-01 Juan I. Cayuso , Matthew C. Johnson

The kinetic Sunyaev Zel'dovich (kSZ) and moving lens effects, secondary contributions to the cosmic microwave background (CMB), carry significant cosmological information due to their dependence on the large-scale peculiar velocity field.…

Cosmology and Nongalactic Astrophysics · Physics 2023-03-08 Juan Cayuso , Richard Bloch , Selim C. Hotinli , Matthew C. Johnson , Fiona McCarthy

The kinetic Sunyaev-Zel'dovich (kSZ) effect offers an indirect way to reconstruct large-scale cosmic velocities, by correlating high-resolution CMB temperature maps with galaxy surveys. In this work, we present the first three-dimensional…

Cosmology and Nongalactic Astrophysics · Physics 2025-06-30 Selim C. Hotinli , Kendrick M. Smith , Simone Ferraro

With the advent of current and future high-resolution CMB experiments, the kinematic Sunyaev-Zel'dovich (kSZ) effect has become a unique observational probe of the distribution of baryons and velocities in the Universe. In this work, we…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-14 Raagini Patki , Nicholas Battaglia , J. Colin Hill

High-precision measurements of the Cosmic Microwave Background (CMB) will soon allow for the unprecedented detection of small-scale secondary anisotropies, such as the kinetic Sunyaev-Zel'dovich (kSZ) effect. Linking the kSZ power spectrum…

A new generation of CMB experiments will soon make sensitive high resolution maps of the microwave sky. At angular scales less than $\sim$10 arcminutes, most CMB anisotropies are generated at z $< 1000$, rather than at the surface of last…

Astrophysics · Physics 2011-02-11 Mario A. Riquelme , David N. Spergel

The cosmic microwave background (CMB) serves as a backlight to large-scale structure during the epoch of reionization, where Thomson scattering gives rise to temperature anisotropies on small angular scales from the kinetic Sunyaev…

Cosmology and Nongalactic Astrophysics · Physics 2022-03-21 Selim C. Hotinli , Matthew C. Johnson

We extend our maximum likelihood method for reconstructing the cluster-mass cross-correlation from cosmic microwave background (CMB) temperature anisotropies and develop new estimators that utilize six different quadratic combinations of…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-21 Jaiyul Yoo , Matias Zaldarriaga , Lars Hernquist

Upcoming cosmic microwave background (CMB) surveys will soon make the first detection of the polarized Sunyaev-Zel'dovich effect, the linear polarization generated by the scattering of CMB photons on the free electrons present in collapsed…

Cosmology and Nongalactic Astrophysics · Physics 2018-06-04 Joel Meyers , P. Daniel Meerburg , Alexander van Engelen , Nicholas Battaglia
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