activity
20202026
most citedLower bias, lower noise CMB lensing with foreground-hardened estimators

70 citations · 324 across the 23 of their papers we have counts for

collaborators

24 papers

astro-ph.CO2026

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…

astro-ph.CO2025

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,…

astro-ph.CO2025

Missing baryons recovered: a measurement of the gas fraction in galaxies and groups with the kinematic Sunyaev-Zel'dovich effect and CMB lensing

Boryana Hadzhiyska, Simone Ferraro, Gerrit S. Farren +2

We present new constraints on the halo masses and matter density profiles of DESI galaxy groups by cross-correlating samples of Luminous Red Galaxies (LRGs) and Bright Galaxy Surve…

astro-ph.CO2025★ 9 cited

Cosmology from Planck CMB Lensing and DESI DR1 Quasar Tomography

R. de Belsunce, A. Krolewski, S. Chiarenza +60

We present a measurement of the amplitude of matter fluctuations over the redshift range 0.8 <= z <= 3.5 from the cross correlation of over 1.2 million spectroscopic quasars select…

astro-ph.CO2025

Mapping the gas density with the kinematic Sunyaev-Zel'dovich and patchy screening effects: a self-consistent comparison

Boryana Hadzhiyska, Noah Sailer, Simone Ferraro

The secondary anisotropies of the cosmic microwave background (CMB) provide a wealth of astrophysical and cosmological information. Pairing measurements of the CMB temperature map…

astro-ph.CO2025

Bias hardened estimators of patchy screening profiles

Noah Sailer, Boryana Hadzhiyska, Simone Ferraro

Detecting anisotropic screening of the cosmic microwave background (CMB) holds the promise of revealing the distribution of gas in the Universe, characterizing the complex processe…

astro-ph.CO2025

A joint analysis of 3D clustering and galaxy x CMB-lensing cross-correlations with DESI DR1 galaxies

M. Maus, M. White, N. Sailer +58

The spectroscopic data from DESI Data Release 1 (DR1) galaxies enables the analysis of 3D clustering by fitting galaxy power spectra and reconstructed correlation functions in reds…

astro-ph.CO2025★ 25 cited

Dispuable: the high cost of a low optical depth

Noah Sailer, Gerrit S. Farren, Simone Ferraro +1

Recent baryonic acoustic oscillation (BAO) measurements from the Dark Energy Spectroscopic Instrument (DESI) are mildly discrepant () with the cosmic microwave background (CM…

astro-ph.CO2025

Evolution of structure growth during dark energy domination: Insights from the cross-correlation of DESI galaxies with CMB lensing and galaxy magnification

Noah Sailer, Joseph DeRose, Simone Ferraro +5

We use a Hybrid Effective Field Theory (HEFT) model to constrain the evolution of low-redshift matter fluctuations by cross-correlating DESI Bright Galaxy Survey (…

astro-ph.CO2025★ 2 cited

The Spectroscopic Stage-5 Experiment

Robert Besuner, Arjun Dey, Alex Drlica-Wagner +106

The existence, properties, and dynamics of the dark sectors of our universe pose fundamental challenges to our current model of physics, and large-scale astronomical surveys may be…

astro-ph.IM2025★ 1 cited

The Simons Observatory: Science Goals and Forecasts for the Enhanced Large Aperture Telescope

The Simons Observatory Collaboration, M. Abitbol, I. Abril-Cabezas +419

We describe updated scientific goals for the wide-field, millimeter-wave survey that will be produced by the Simons Observatory (SO). Significant upgrades to the 6-meter SO Large A…

astro-ph.CO2024★ 23 cited

Cosmological constraints from the cross-correlation of DESI Luminous Red Galaxies with CMB lensing from Planck PR4 and ACT DR6

Noah Sailer, Joshua Kim, Simone Ferraro +63

We infer the growth of large scale structure over the redshift range from the cross-correlation of spectroscopically calibrated Luminous Red Galaxies (LR…

astro-ph.CO2024★ 38 cited

The Atacama Cosmology Telescope DR6 and DESI: Structure formation over cosmic time with a measurement of the cross-correlation of CMB Lensing and Luminous Red Galaxies

Joshua Kim, Noah Sailer, Mathew S. Madhavacheril +70

We present a high-significance cross-correlation of CMB lensing maps from the Atacama Cosmology Telescope (ACT) Data Release 6 (DR6) with spectroscopically calibrated luminous red…

astro-ph.CO2024

Predicting the 21 cm field with a Hybrid Effective Field Theory approach

Danial Baradaran, Boryana Hadzhiyska, Martin J. White +1

A detection of the 21 cm signal can provide a unique window of opportunity for uncovering complex astrophysical phenomena at the epoch of reionization and placing constraints on co…

astro-ph.CO2023★ 58 cited

DESI luminous red galaxy samples for cross-correlations

Rongpu Zhou, Simone Ferraro, Martin White +36

We present two galaxy samples, selected from DESI Legacy Imaging Surveys (LS) DR9, with approximately 20,000 square degrees of coverage and spectroscopic redshift distributions des…

astro-ph.CO2022★ 36 cited

Foreground-immune CMB lensing reconstruction with polarization

Noah Sailer, Simone Ferraro, Emmanuel Schaan

Extragalactic foregrounds are known to generate significant biases in temperature-based CMB lensing reconstruction. Several techniques, which include ``source hardening'' and ``she…

astro-ph.CO2022

A Spectroscopic Road Map for Cosmic Frontier: DESI, DESI-II, Stage-5

David J. Schlegel, Simone Ferraro, Greg Aldering +62

In this white paper, we present an experimental road map for spectroscopic experiments beyond DESI. DESI will be a transformative cosmological survey in the 2020s, mapping 40 milli…

astro-ph.CO2022★ 15 cited

Optical depth to reionization from perturbative 21cm clustering

Noah Sailer, Shi-Fan Chen, Martin White

The optical depth is the least well determined parameter in the standard model of cosmology, and one whose precise value is important for both understanding reionization and fo…

astro-ph.CO2022★ 12 cited

Snowmass 2021 CMB-S4 White Paper

Kevork Abazajian, Arwa Abdulghafour, Graeme E. Addison +353

This Snowmass 2021 White Paper describes the Cosmic Microwave Background Stage 4 project CMB-S4, which is designed to cross critical thresholds in our understanding of the origin a…

astro-ph.CO2022

Snowmass2021 Cosmic Frontier White Paper: Cosmology and Fundamental Physics from the three-dimensional Large Scale Structure

Simone Ferraro, Noah Sailer, Anze Slosar +1

Advances in experimental techniques make it possible to map the high redshift Universe in three dimensions at high fidelity in the near future. This will increase the observed volu…

astro-ph.CO2021★ 4 cited

Optimizing foreground mitigation for CMB lensing with combined multifrequency and geometric methods

Omar Darwish, Blake D. Sherwin, Noah Sailer +2

A key challenge for current and upcoming CMB lensing measurements is their sensitivity to biases from extragalactic foregrounds, such as Sunyaev-Zeldovich (SZ) signals or cosmic in…

astro-ph.CO2021★ 24 cited

Optimal multifrequency weighting for CMB lensing

Noah Sailer, Emmanuel Schaan, Simone Ferraro +2

Extragalactic foregrounds in Cosmic Microwave Background (CMB) temperature maps lead to significant biases in CMB lensing reconstruction if not properly accounted for. Combinations…

astro-ph.CO2021★ 7 cited

Cosmology at high redshift -- a probe of fundamental physics

Noah Sailer, Emanuele Castorina, Simone Ferraro +1

An observational program focused on the high redshift () Universe has the opportunity to dramatically improve over upcoming LSS and CMB surveys on measurements of both the s…

astro-ph.CO2020★ 70 cited

Lower bias, lower noise CMB lensing with foreground-hardened estimators

Noah Sailer, Emmanuel Schaan, Simone Ferraro

Extragalactic foregrounds in temperature maps of the Cosmic Microwave Background (CMB) severely limit the ability of standard estimators to reconstruct the weak lensing potential.…