347 citations · 724 across the 13 of their papers we have counts for
13 papers · 1 filter
Optimal and exact wide-angle power spectrum estimation
Noah Sailer, Kendrick Smith, Yurii Kvasiuk +2
What is the optimal power spectrum estimator on ultra-large scales where the plane-parallel approximation breaks down? Conventional estimators, such as the Yamamoto estimator, are…
The Atacama Cosmology Telescope: Probing new signatures of ultralight axions with gravitational lensing
Alex Laguë, Keir K. Rogers, Mathew S. Madhavacheril +14
Ultralight axions (ULAs) are well-motivated dark matter particle candidates that arise in many extensions of the Standard Model of particle physics. ULAs with mass $m_\mathrm{a} \l…
Cosmic voids as a probe of the nature of dark matter: simulations and galaxy survey forecasts
Alexander Spencer London, Keir K. Rogers, Alex Laguë +2
Voids are parts of the cosmic web least affected by non-linearities and baryonic feedback. We thus calculate the sensitivity of voids to the nature of dark matter (DM), using ultra…
The Simons Observatory: forecasted constraints on primordial gravitational waves with the expanded array of Small Aperture Telescopes
The Simons Observatory Collaboration, I. Abril-Cabezas, S. Adachi +479
We present updated forecasts for the scientific performance of the degree-scale (0.5 deg FWHM at 93 GHz), deep-field survey to be conducted by the Simons Observatory (SO). By 2027,…
Inferring the Impacts of Baryonic Feedback from Kinetic Sunyaev-Zeldovich Cross-Correlations
Alex Laguë, Mathew S. Madhavacheril, Josh Borrow +4
The complex processes of baryonic feedback associated with galaxy evolution are still poorly understood, and their impact on the clustering of matter on small scales remains diffic…
Reconstructing the shape of the non-linear matter power spectrum using CMB lensing and cosmic shear
Karen Perez Sarmiento, Alex Laguë, Mathew Madhavacheril +2
We reconstruct the non-linear matter power spectrum using a joint analysis of gravitational lensing of the cosmic microwave background (CMB) and lensing of galaxies. This re…
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…
The Atacama Cosmology Telescope: DR6 Gravitational Lensing Map and Cosmological Parameters
Mathew S. Madhavacheril, Frank J. Qu, Blake D. Sherwin +156
We present cosmological constraints from a gravitational lensing mass map covering 9400 sq. deg. reconstructed from CMB measurements made by the Atacama Cosmology Telescope (ACT) f…
The Atacama Cosmology Telescope: A Measurement of the DR6 CMB Lensing Power Spectrum and its Implications for Structure Growth
Frank J. Qu, Blake D. Sherwin, Mathew S. Madhavacheril +155
We present new measurements of cosmic microwave background (CMB) lensing over sq. deg. of the sky. These lensing measurements are derived from the Atacama Cosmology Telescop…
Improved Mixed Dark Matter Halo Model for Ultralight Axions
Sophie M. L. Vogt, David J. E. Marsh, Alex Laguë
We present a complete halo model for mixed dark matter composed of cold dark matter (CDM) and ultralight axion-like particles (ULAs). Our model treats ULAs as a biased tracer of CD…
Fuzzy Dark Matter and the Dark Energy Survey Year 1 Data
Mona Dentler, David J. E. Marsh, Renée Hložek +3
Gravitational weak lensing by dark matter halos leads to a measurable imprint in the shear correlation function of galaxies. Fuzzy dark matter (FDM), composed of ultralight axion-l…
Constraining Ultralight Axions with Galaxy Surveys
Alex Laguë, J. Richard Bond, Renée Hložek +3
Ultralight axions and other bosons are dark matter candidates present in many high energy physics theories beyond the Standard Model. In particular, the string axiverse postulates…
Cosmic Microwave Background Spectral Distortions from Cosmic String Loops
Madeleine Anthonisen, Robert Brandenberger, Alex Laguë +2
Cosmic string loops contain cusps which decay by emitting bursts of particles. A significant fraction of the released energy is in the form of photons. These photons are injected n…