37 citations · 150 across the 25 of their papers we have counts for
9 papers · 1 filter
The Atacama Cosmology Telescope: Semi-Analytic Covariance Matrices for the DR6 CMB Power Spectra
Zachary Atkins, Zack Li, David Alonso +18
The Atacama Cosmology Telescope Data Release 6 (ACT DR6) power spectrum is expected to provide state-of-the-art cosmological constraints, with an associated need for precise error…
Constraints on axions from patchy screening of the cosmic microwave background
Samuel Goldstein, Fiona McCarthy, Cristina Mondino +3
The resonant conversion of cosmic microwave background (CMB) photons into axions within large-scale structure induces an anisotropic spectral distortion in CMB temperature maps. Ap…
Constraining Cosmological Parameters with Needlet Internal Linear Combination Maps II: Likelihood-Free Inference on NILC Power Spectra
Kristen M. Surrao, J. Colin Hill
Standard cosmic microwave background (CMB) analyses constrain cosmological and astrophysical parameters by fitting parametric models to multifrequency power spectra (MFPS). However…
Dark photon limits from patchy dark screening of the cosmic microwave background
Fiona McCarthy, Dalila Pirvu, J. Colin Hill +3
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 conv…
Accelerated inference on accelerated cosmic expansion: New constraints on axion-like early dark energy with DESI BAO and ACT DR6 CMB lensing
Frank J. Qu, Kristen M. Surrao, Boris Bolliet +3
The early dark energy (EDE) extension to CDM has been proposed as a candidate scenario to resolve the "Hubble tension". We present new constraints on the EDE model by incorporat…
Signal-preserving CMB component separation with machine learning
Fiona McCarthy, J. Colin Hill, William R. Coulton +1
Analysis of microwave sky signals, such as the cosmic microwave background, often requires component separation with multi-frequency methods, where different signals are isolated b…
Constraining Cosmological Parameters with Needlet Internal Linear Combination Maps I: Analytic Power Spectrum Formalism
Kristen M. Surrao, J. Colin Hill
The internal linear combination (ILC) method is a popular approach for constructing component-separated maps in cosmic microwave background (CMB) analyses. It optimally combines ob…
The Simons Observatory: impact of bandpass, polarization angle and calibration uncertainties on small-scale power spectrum analysis
S. Giardiello, M. Gerbino, L. Pagano +17
We study the effects due to mismatches in passbands, polarization angles, and temperature and polarization calibrations in the context of the upcoming cosmic microwave background e…
Constraints on Dark Matter-Dark Energy Scattering from ACT DR6 CMB Lensing
Alex Laguë, Fiona McCarthy, Mathew Madhavacheril +2
The predicted present-day amplitude of matter fluctuations based on cosmic microwave background (CMB) anisotropy data has sometimes been found discrepant with more direct measureme…