90 citations · 264 across the 34 of their papers we have counts for
34 papers
Characterising the epoch of reionisation using the cross-correlation of the kSZ effect and CMB lensing
Niall MacCrann, Christopher Cain, Aleksandra Kusiak +5
We investigate the cross-correlation of the kinematic Sunyaev-Zeldovich (kSZ) effect with lensing of the cosmic microwave background (CMB) as a probe of the epoch of reionisation.…
Single Frequency CMB Foreground Removal with Inter-scale Machine Learning
Helen Shao, Fiona McCarthy, Blake D. Sherwin +2
Accurate measurements of Cosmic Microwave Background (CMB) B-mode polarization, a key probe of inflationary physics, are hindered by complex Galactic dust foregrounds. Traditional…
New constraints on primordial non-Gaussianity from large-scale cross-correlations of CMB lensing and the cosmic infrared background
Joseph Thornton, Fiona McCarthy, Carmen Embil Villagra +1
We present new constraints on the local-type primordial non-Gaussianity parameter, , through analysis of the scale-dependent bias effect on the cosmic…
Estimation and mitigation of foregrounds in projected kSZ velocity reconstruction
Carmen Embil Villagra, Fiona McCarthy, Antón Baleato Lizancos +2
The kSZ effect has recently emerged as a powerful probe for precision cosmology through its ability to reconstruct the large-scale velocity field. In particular, the kSZ-reconstruc…
Self-consistent secondary cosmic microwave background anisotropies and extragalactic foregrounds in the FLAMINGO simulations
Tianyi Yang, Ian G. McCarthy, Fiona McCarthy +6
Secondary anisotropies in the cosmic microwave background (CMB) contain information that can be used to test both cosmological models and models of galaxy formation. Starting from…
The Atacama Cosmology Telescope: Cross-correlation of kSZ and continuity equation velocity reconstruction with photometric DESI LRGs
Fiona McCarthy, Boryana Hadzhiyska, J. Richard Bond +12
Over the last year, kinematic Sunyaev--Zel'dovich (kSZ) velocity reconstruction -- the measurement of the large-scale velocity field using the anisotropic statistics of the small-s…
CMB component-separated power spectrum estimation by Spectral Internal Linear Combination (SpILC)
Jack Y. L. Kwok, William R. Coulton, Niall MacCrann +3
Component separation methods mitigate the cross-contamination between different extragalactic and galactic contributions to cosmic microwave background (CMB) data. This is often do…
CLASS_SZ II: Notes and Examples of Fast and Accurate Calculations of Halo Model, Large Scale Structure and Cosmic Microwave Background Observables
Boris Bolliet, Aleksandra Kusiak, Fiona McCarthy +16
These notes are very much work-in-progress and simply intended to showcase, in various degrees of details (and rigour), some of the cosmology calculations that class_sz can do. We…
The Atacama Cosmology Telescope: DR6 Maps
Sigurd Naess, Yilun Guan, Adriaan J. Duivenvoorden +163
We present Atacama Cosmology Telescope (ACT) Data Release 6 (DR6) maps of the Cosmic Microwave Background temperature and polarization anisotropy at arcminute resolution over three…
The Atacama Cosmology Telescope: DR6 Constraints on Extended Cosmological Models
Erminia Calabrese, J. Colin Hill, Hidde T. Jense +169
We use new cosmic microwave background (CMB) primary temperature and polarization anisotropy measurements from the Atacama Cosmology Telescope (ACT) Data Release 6 (DR6) to test fo…
The Atacama Cosmology Telescope: DR6 Power Spectra, Likelihoods and CDM Parameters
Thibaut Louis, Adrien La Posta, Zachary Atkins +165
We present power spectra of the cosmic microwave background (CMB) anisotropy in temperature and polarization, measured from the Data Release 6 maps made from Atacama Cosmology Tele…
The Power Spectrum of the Thermal Sunyaev-Zeldovich Effect
George Efstathiou, Fiona McCarthy
The power spectrum of unresolved thermal Sunyaev-Zeldovich (tSZ) clusters is extremely sensitive to the amplitude of the matter fluctuations. This paper present an analysis of the…
The Atacama Cosmology Telescope: A measurement of galaxy cluster temperatures through relativistic corrections to the thermal Sunyaev-Zeldovich effect
William R. Coulton, Adriaan J. Duivenvoorden, Zachary Atkins +32
The high electron temperature in galaxy clusters (keV or K) leads to corrections at the level of a few percent in their thermal Sunyaev-Zeldovich effect signatures.…
The Atacama Cosmology Telescope: Large-scale velocity reconstruction with the kinematic Sunyaev--Zel'dovich effect and DESI LRGs
Fiona McCarthy, Nicholas Battaglia, Rachel Bean +27
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 comb…
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…
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…
Large-scale galactic-dust-cleaned cosmic infrared background maps from \textit{Planck} PR4 and HI4PI with \texttt{pyilc}
Fiona McCarthy
The cosmic infrared background (CIB) traces star-forming galaxies throughout cosmic history, with emission peaking at . CIB anisotropies are present at the far-infrared f…
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…
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…
The Atacama Cosmology Telescope: A search for late-time anisotropic screening of the Cosmic Microwave Background
William R. Coulton, Theo Schutt, Abhishek S. Maniyar +37
Since the formation of the first stars, most of the gas in the Universe has been ionized. Spatial variations in the density of this ionized gas generate cosmic microwave background…
Cross-correlation of the thermal Sunyaev--Zel'dovich and CMB lensing signals in Planck PR4 data with robust CIB decontamination
Fiona McCarthy, J. Colin Hill
We use the full-mission Planck PR4 data to measure the CMB lensing convergence ()--thermal Sunyaev-Zel'dovich (tSZ, ) cross-correlation, . This is only the secon…
The Atacama Cosmology Telescope: High-resolution component-separated maps across one-third of the sky
William R. Coulton, Mathew S. Madhavacheril, Adriaan J. Duivenvoorden +151
Observations of the millimeter sky contain valuable information on a number of signals, including the blackbody cosmic microwave background (CMB), Galactic emissions, and the Compt…
Component-separated, CIB-cleaned thermal Sunyaev--Zel'dovich maps from PR4 data with a flexible public needlet ILC pipeline
Fiona McCarthy, J. Colin Hill
We use the full-mission PR4 data to construct maps of the thermal SunyaevZel'dovich effect (Compton- parameter) in our Universe. To do so, we implement a c…
Constraints on primordial non-Gaussianity from halo bias measured through CMB lensing cross-correlations
Fiona McCarthy, Mathew S. Madhavacheril, Abhishek S. Maniyar
Local non-Gaussianities in the initial conditions of the Universe, parameterized by , induce a scale-dependence in the large-scale bias of halos in the late Universe. T…