activity
20232026
most citedThe Atacama Cosmology Telescope: DR6 Constraints on Extended Cosmological Models

14 citations · 56 across the 17 of their papers we have counts for

collaborators

17 papers

cs.AI2026

DI-Bench: Systematically Generating In-Domain Data Intelligence Benchmarks for Enterprise Agents

Jiangyun Zhang, Kristen Surrao, Torpong Nitayanont +10

Evaluating enterprise agents on domain-specific benchmarks is critical, yet public benchmarks rarely evaluate whether agents can integrate business knowledge with analytical comput…

astro-ph.CO2025★ 1 cited

Robust CMB B-mode analysis with Needlet-ILC and simulation-based inference

Adriaan J. Duivenvoorden, Kristen Surrao, Adrian E. Bayer +4

We explore a novel analysis framework for parameter inference with large-scale CMB polarization data. Our method uses simulation-based inference combined with the needlet internal…

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

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…

cs.AI2025

Open Source Planning & Control System with Language Agents for Autonomous Scientific Discovery

Licong Xu, Milind Sarkar, Anto I. Lonappan +23

We present a multi-agent system for automation of scientific research tasks, cmbagent (https://github.com/CMBAgents/cmbagent). The system is formed by about 30 Large Language Model…

astro-ph.CO2025★ 8 cited

The Atacama Cosmology Telescope: DR6 Power Spectrum Foreground Model and Validation

Benjamin Beringue, Kristen M. Surrao, J. Colin Hill +28

We discuss the model of astrophysical emission at millimeter wavelengths used to characterize foregrounds in the multi-frequency power spectra of the Atacama Cosmology Telescope (A…

astro-ph.CO2025

Minimizing Contaminant Leakage in Internal Linear Combination Maps Using a Data-Driven Approach

Kristen M. Surrao, Shivam Pandey, J. Colin Hill +1

The thermal Sunyaev-Zel'dovich (tSZ) effect, the inverse-Compton scattering of cosmic microwave background (CMB) photons off high-energy electrons, is a powerful probe of hot, ioni…

astro-ph.CO2025★ 2 cited

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…

astro-ph.CO2025★ 14 cited

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…

astro-ph.CO2025★ 11 cited

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…

astro-ph.IM2024★ 1 cited

Multi-Agent System for Cosmological Parameter Analysis

Andrew Laverick, Kristen Surrao, Inigo Zubeldia +5

Multi-agent systems (MAS) utilizing multiple Large Language Model agents with Retrieval Augmented Generation and that can execute code locally may become beneficial in cosmological…

astro-ph.CO2024

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…

astro-ph.CO2024★ 9 cited

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…

astro-ph.CO2024

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…

astro-ph.IM2023

class_sz I: Overview

B. Bolliet, A. Kusiak, F. McCarthy +16

class_sz is a versatile and robust code in C and Python that can compute theoretical predictions for a wide range of observables relevant to cross-survey science in the Stage IV er…

astro-ph.CO2023★ 3 cited

Enhancing Measurements of the CMB Blackbody Temperature Power Spectrum by Removing CIB and Thermal Sunyaev-Zel'dovich Contamination Using External Galaxy Catalogs

Aleksandra Kusiak, Kristen M. Surrao, J. Colin Hill

Extracting the CMB blackbody temperature power spectrum -- which is dominated by the primary CMB signal and the kinematic Sunyaev-Zel'dovich (kSZ) effect -- from mm-wave sky maps r…

astro-ph.CO2023★ 7 cited

Accurate estimation of angular power spectra for maps with correlated masks

Kristen M. Surrao, Oliver H. E. Philcox, J. Colin Hill

The widely used MASTER approach for angular power spectrum estimation was developed as a fast estimator on limited regions of the sky. This method expresses the power sp…