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  1. Atacama Cosmology Telescope: A measurement of galaxy cluster temperatures through relativistic corrections to the thermal Sunyaev-Zeldovich effect

    Publication
    The high electron temperature in galaxy clusters (\(>1\,\)keV or \(>10^7\,\)K) leads to corrections at the level of a few percent in their thermal Sunyaev-Zeldovich …

  2. Unified and Consistent Structure Growth Measurements from Joint ACT, SPT, and Planck CMB Lensing

    Publication
    We present the tightest cosmic microwave background (CMB) lensing constraints to date on the growth of structure by combining CMB lensing measurements from the Atacama Cosmology Telescope (ACT …

  3. Backlighting extended gas halos around luminous red galaxies: Kinematic Sunyaev-Zel'dovich effect from DESI Y1 and ACT data

    Publication
    The gas density profile around galaxies, shaped by feedback and affecting the galaxy lensing signal, is imprinted on the cosmic microwave background (CMB) by the kinematic Sunyaev-Zel …

  4. The Atacama Cosmology Telescope: DR6 constraints on extended cosmological models

    Publication
    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 foundational assumptions of …

  5. The Atacama Cosmology Telescope: DR6 power spectra, likelihoods and \(\Lambda\)CDM parameters

    Publication
    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 Telescope (ACT …

  6. The Atacama Cosmology Telescope: DR6 maps

    Publication
    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 frequency bands centered …

  7. The Atacama Cosmology Telescope: Systematic Transient Search of Single Observation Maps

    Publication
    We conduct a systematic search for astrophysical transients using data from the Atacama Cosmology Telescope. The data were taken from 2017 to 2022 in three frequency bands spanning …

  8. Cosmological limits on the neutrino mass sum for beyond-\(\Lambda\)CDM models

    Publication
    The sum of neutrino masses can be measured cosmologically, as the sub-eV particles behave as "hot" dark matter whose main effect is to suppress the clustering of …

  9. The Atacama Cosmology Telescope: Semi-Analytic Covariance Matrices for the DR6 CMB Power Spectra

    Publication
    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 …

  10. The Atacama Cosmology Telescope: Quantifying Atmospheric Emission above Cerro Toco

    Publication
    At frequencies below 1 Hz, fluctuations in atmospheric emission in the Chajnantor region in northern Chile are the primary source of interference for bolometric millimeter-wave observations. This …

  11. Atacama Cosmology Telescope: The persistence of neutrino self-interaction in cosmological measurements

    Publication
    We use data from the Atacama Cosmology Telescope (ACT) DR4 to search for the presence of neutrino self-interaction in the cosmic microwave background. Consistent with prior works …

  12. ACT-DR5 Sunyaev-Zel'dovich clusters: Weak lensing mass calibration with KiDS

    Publication
    We present Weak Gravitational Lensing measurements of a sample of 157 clusters within the Kilo Degree Survey (KiDS), detected with a > 5σ thermal Sunyaev-Zel'dovich (SZ) signal …