Nicholas Battaglia

About

Professor Nicholas Battaglia works on observational cosmology and is particularly interested in fundamental physics, the epoch of reionization, and galaxy evolution. His research specializes in the data analysis and simulations of large-scale structure and secondary anisotropies in the cosmic microwave background, such as the thermal and kinetic Sunyaev-Zeldovich effects. He focuses on extracting astrophysical and cosmological information from observations related to these phenomena. He is directly involved with experiments including the Atacama Cosmology Telescope, CCAT-prime, and the Simons Observatory, contributing to advancing our understanding of the universe through these large-scale observational efforts.

Research topics

• Astrophysics
• Astronomy
• Physics
• Optics
• Geography
• Quantum mechanics
• Statistics
• Remote sensing

Selected publications

• The Atacama Cosmology Telescope: DR4 maps and cosmological parameters

  Journal of Cosmology and Astroparticle Physics · 2020 · 601 citations

  <p>We present new arcminute-resolution maps of the Cosmic Microwave Background temperature and polarization anisotropy from the Atacama Cosmology Telescope, using data taken from 2013–2016 at 98 and 150 GHz. The maps cover more than 17,000 deg<sup>2</sup>, the deepest 600 deg<sup>2</sup> with noise levels below 10μK-arcmin. We use the power spectrum derived from almost 6,000 deg<sup>2</sup> of these maps to con…

  DOI

• The Atacama Cosmology Telescope: a measurement of the cosmic microwave background power spectra at 98 and 150 GHz

  Journal of Cosmology and Astroparticle Physics · 2020 · 287 citations

  We present the temperature and polarization angular power spectra of the CMB measured by the Atacama Cosmology Telescope (ACT) from 5400 deg2 of the 2013–2016 survey, which covers >15000 deg2 at 98 and 150 GHz. For this analysis we adopt a blinding strategy to help avoid confirmation bias and, related to this, show numerous checks for systematic error done before unblinding. Using the likelihood for the cosmological analysis we constrain secondary sources of anisotropy and foreground emission…

  DOI

• CMB-S4: Forecasting Constraints on Primordial Gravitational Waves

  The Astrophysical Journal · 2022 · 256 citations

  Abstract CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to significantly advance the sensitivity of CMB measurements and enhance our understanding of the origin and evolution of the universe. Among the science cases pursued with CMB-S4, the quest for detecting primordial gravitational waves is a central driver of the experimental design. This work details the development of a forecasting framework that includes a power-spectrum-based semianalytic proj…

  PublisherOA PDFDOI

• The Atacama Cosmology Telescope: DR6 power spectra, likelihoods and ΛCDM parameters

  Journal of Cosmology and Astroparticle Physics · 2025-11-01 · 117 citations

  articleOpen access

  Abstract 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) data. These cover 19,000 deg 2 of sky in bands centered at 98, 150 and 220 GHz, with white noise levels three times lower than Planck in polarization. We find that the ACT angular power spectra estimated over 10,000 deg 2 , and measured to arcminute scales in TT, TE and EE, are well fit by the sum…

  PublisherDOI

• CCAT-prime Collaboration: Science Goals and Forecasts with Prime-Cam on the Fred Young Submillimeter Telescope

  The Astrophysical Journal Supplement Series · 2022 · 93 citations

  Abstract We present a detailed overview of the science goals and predictions for the Prime-Cam direct-detection camera–spectrometer being constructed by the CCAT-prime collaboration for dedicated use on the Fred Young Submillimeter Telescope (FYST). The FYST is a wide-field, 6 m aperture submillimeter telescope being built (first light in late 2023) by an international consortium of institutions led by Cornell University and sited at more than 5600 m on Cerro Chajnantor in northern Chile. Prime-…

  PublisherOA PDFDOI

Recent grants

• Observations to Constrain the Origins of Hot Gas Between Galaxies and Clusters of Galaxies Across Cosmic Time

  NSF · $353k · 2019–2023

Frequent coauthors

• David N. Spergel

  198 shared

• Michael D. Niemack

  157 shared

• Thibaut Louis

  Laboratoire de Physique des 2 Infinis Irène Joliot-Curie

  142 shared

• J. Colin Hill

  Columbia University

  140 shared

• Jonathan Sievers

  126 shared

• Edward J. Wollack

  Goddard Space Flight Center

  126 shared

• Adam D. Hincks

  University of Toronto

  120 shared

• Matt Hilton

  University of the Witwatersrand

  117 shared

Similar researchers at Cornell University

• Shami Chatterjeeh-90
• Nikole Lewish-65
• Anna Y.Q. Hoh-64