Dark photon limits from patchy dark screening of the cosmic microwave background

F McCarthy, D Pîrvu, JC Hill, J Huang, MC Johnson… - Physical Review Letters, 2024 - APS
Dark photons that kinetically mix with the Standard Model photon give rise to new spectral
anisotropies (patchy dark screening) in the cosmic microwave background (CMB) due to …

Constraining cosmological parameters with needlet internal linear combination maps. II. Likelihood-free inference on needlet internal linear combination power …

KM Surrao, JC Hill - Physical Review D, 2024 - APS
Standard cosmic microwave background (CMB) analyses constrain cosmological and
astrophysical parameters by fitting parametric models to multifrequency power spectra …

The Atacama Cosmology Telescope: reionization kSZ trispectrum methodology and limits

N MacCrann, FJ Qu, T Namikawa… - Monthly Notices of …, 2024 - academic.oup.com
Patchy reionization generates kinematic Sunyaev–Zel'dovich (kSZ) anisotropies in the
cosmic microwave background (CMB). Large-scale velocity perturbations along the line of …

Constraining cosmological parameters with needlet internal linear combination maps. I. Analytic power spectrum formalism

KM Surrao, JC Hill - Physical Review D, 2024 - APS
The internal linear combination (ILC) method is a popular approach for constructing
component-separated maps in cosmic microwave background analyses. It optimally …

New temperature inversion estimator to detect CMB patchy screening by large-scale structure

T Schutt, AS Maniyar, E Schaan, WR Coulton, N Mishra - Physical Review D, 2024 - APS
Thomson scattering of cosmic microwave background (CMB) photons imprints various
properties of the baryons around galaxies on the CMB. One such imprint, called patchy …

Deep Learning generated observations of galaxy clusters from dark-matter-only simulations

A Caro, D de Andres, W Cui, G Yepes… - arXiv preprint arXiv …, 2024 - arxiv.org
Hydrodynamical simulations play a fundamental role in modern cosmological research,
serving as a crucial bridge between theoretical predictions and observational data …

Rapid Methods for Modeling Overdensities of Massive Neutrinos and Other Non-Cold Relics

K Worku, N Sabti, M Kamionkowski - arXiv preprint arXiv:2410.08267, 2024 - arxiv.org
Recent work has highlighted the potentially detectable gravitational-lensing effect of
neutrino halos on cosmic-microwave-background (CMB) fluctuations with upcoming …

Superclustering with the Atacama Cosmology Telescope and Dark Energy Survey: II. Anisotropic large-scale coherence in hot gas, galaxies, and dark matter

M Lokken, A van Engelen, M Aguena, SS Allam… - arXiv preprint arXiv …, 2024 - arxiv.org
Statistics that capture the directional dependence of the baryon distribution in the cosmic
web enable unique tests of cosmology and astrophysical feedback. We use constrained …

Too Hot to Handle: Searching for Inflationary Particle Production in Planck Data

OHE Philcox, S Kumar, JC Hill - arXiv preprint arXiv:2405.03738, 2024 - arxiv.org
Non-adiabatic production of massive particles is a generic feature of many inflationary
mechanisms. If sufficiently massive, these particles can leave features in the cosmic …

The Atacama Cosmology Telescope: Large-scale velocity reconstruction with the kinematic Sunyaev--Zel'dovich effect and DESI LRGs

F McCarthy, N Battaglia, R Bean, JR Bond… - arXiv preprint arXiv …, 2024 - arxiv.org
The kinematic Sunyaev--Zel'dovich (kSZ) effect induces a non-zero density-density-
temperature bispectrum, which we can use to reconstruct the large-scale velocity field from a …