The Vieregg Lab

We build radio and millimeter wave experiments and use them for neutrino astrophysics and cosmology with the cosmic microwave background (CMB).

Radio Detection of Ultra-high Energy Neutrinos: Radio Detection of Ultra-high Energy Neutrinos: We are leaders in the design, development, simulation, and analysis of data from experiments that look for ultra-high energy astrophysical and cosmogenic neutrinos through the radio emission that is made as a result of neutrino interactions on Earth. We contribute to major efforts in this field, including ARA, BEACON, RNO-G, PUEO, and IceCube-Gen2.

Precision Measurements of CMB Polarization: Precision Measurements of CMB Polarization: We build telescopes that make precision measurements of the polarization of the CMB to learn about an inflationary period in the early universe and about the properties of neutrinos, among other things. We are deeply involved in the development of CMB-S4, a large-scale ground-based CMB experiment.

Scroll down to read more about research and news from the lab.

Ongoing Projects


The PUEO experiment is a NASA long-duration balloon (LDB) experiment currently being built. It is being funded through the NASA Pioneers program. It is designed to detect radio signals generated via the Askaryan effect from the highest energy neutrinos interacting in the Antarctic ice sheet. PUEO will be sensitive to ultra-high energy neutrinos. Members of our group are involved in hardware development and neutrino interaction simulation. PUEO is scheduled to launch from McMurdo Station in Antarctica in December of 2024.

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We are involved in the development and deployment of RNO-G, an in-ice radio detector that is being deployed to Summit Station in Greenland. RNO-G builds on the success of ARA, and incorporates new interferometric phased array trigger technology. RNO-G will have the sensitivity required to discover ultra-high energy neutrinos. We are part of the current deployment effort. Three stations were deployed in summer of 2021, and more stations are being deployed in summer of 2022.

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RNO-G is serving as a prototype for future (larger) detectors like IceCube-Gen2. Looking farther to the future, we are also involved in planning for IceCube-Gen2, which will incorporate a large radio array into the design.

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BEACON is a mountainside radio detector concept that aims to detect radio emission from air showers created by tau leptons that are the result of the interaction of tau neutrinos in the Earth. We have helped design and develop an initial prototype system, which is located at Barcroft Station of the White Mountain Research Station in California. Our lab is also involved in hardware development for future stations, and we have worked on searches for cosmic rays using the prototype.


The ARA experiment is an in-ice radio detector for ultra-high energy neutrinos located at the South Pole. At Chicago, we have led the development and deployment of a new interferometric phased array trigger that has significantly improved instrument sensitivity. We deployed the first 8-channel system in January 2018, which is working stably and has achieved the improvement in sensitivity predicted by simulations. Members of our group are working on improving the techniques used to analyze data from the ARA phased array system, to capitalize on the improvement in threshold achieved by the new trigger. Our lab has also led a search for neutrinos using the phased-array deployed in 2018.

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We are part of the CMB-S4 collaboration, a next-generation ground-based CMB experiment, which will target inflationary B-modes and B-modes on smaller angular scales to measure properties of neutrinos (among other science goals).

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Select Recent Publications and News


"Design and Initial Performance of the Prototype for the BEACON Instrument for Detection of Ultrahigh Energy Particles", arXiv:2206.09660 (2022)

"Experimental tests of sub-surface reflectors as an explanation for the ANITA anomalous events", arXiv:2009.13010 (2022)

"A low-threshold ultrahigh-energy neutrino search with the Askaryan Radio Array", arXiv:2202.07080 (2022)

"In situ, broadband measurement of the radio frequency attenuation length at Summit Station, Greenland", arXiv:2201.07846 (2022)

"The Payload for Ultrahigh Energy Observations (PUEO): A White Paper", arXiv:2010.02892 (2021)

"A search for ultrahigh-energy neutrinos associated with astrophysical sources using the third flight of ANITA", arXiv:2010.02869 (2021)

"Design and Sensitivity of the Radio Neutrino Observatory in Greenland (RNO-G)", arXiv:2010.12279 (2020)

"Prospects for high elevation detection of >100 PeV Tau Neutrinos", arXiv:2004.12718 (2020)

"IceCube-Gen2: The Window to the Extreme Universe", arXiv:2008.04323 (2020)

"Revisiting AGN as the Source of IceCube's Diffuse Neutrino Flux", arXiv:2007.12706 (2020)

"Design and Performance of an Interferometric Trigger Array for Radio Detection of High-Energy Neutrinos", NIM 930, 112-125 (2019)

"Constraints on the Diffuse Flux of Ultra-high Energy Neutrinos from Four Years of Askaryan Radio Array Data in Two Stations", submitted to PRD (2019)

"Constraints on the ultra-high energy cosmic neutrino flux from the fourth flight of ANITA", PRD 99, 122001 (2019)

"Superheavy Dark Matter and ANITA’s Anomolous Events", PRD 100, 4 (2019)

"Active Galactic Nuclei and the Origin of IceCube’s Neutrino Flux", JCAP 02(2019)012 (2019)

"Fundamental Physics with High-Energy Cosmic Neutrinos", Astro2020 Decadal Survey (2019), arXiv: 1903.04334

"Astrophysics Uniquely Enabled by Observations of High-Energy Cosmic Neutrinos", Astro2020 Decadal Survey (2019), arXiv: 1903.04334

"CMB-S4 Science Case, Reference Design, and Project Plan.", arXiv:1907.04473 (2019)

Our Team

Abigail Vieregg

David N. Schramm Director of the Kavli Institute for Cosmological Physics

Professor, Physics, Astronomy and Astrophysics, Enrico Fermi Institute, KICP. Ph.D., UCLA, 2010.

CV . Publications

Cosmin Deaconu

Research Scientist, Ph.D. MIT 2015.

Eric Oberla

Research Scientist, Ph.D. Chicago 2015.

Christoph Welling

Post-Doctoral Fellow, Ph.D. FAU Erlangen-Nürnberg 2022.

Kaeli Hughes

Post-Doctoral Fellow, Ph.D. Chicago 2022

Dan Southall

Physics Graduate Student, Graduating 2022

Kelli Michaels

Physics Graduate Student

Rachel Scrandis

Physics Graduate Student

Zachary Martin

Physics Graduate Student

Giovani Leone

Physics Graduate Student

Scott Mackey

Physics Graduate Student

Katherine McDonough

Physics BA, UChicago '23.

Tori Ankel

Physics BA, UChicago '23.

Sharada Kasinath

Computer Science BS, UChicago '23.

Graduate Student and Postdoc Alumni

Chris Sheehy

Now at Convoy Inc.

Keith Bechtol

Now an Assistant Professor at Wisconsin-Madison.

Nicole Larsen

Now at the Department of Defense.

Andrew Ludwig

Now a Post-Doc at JPL

Kaeli Hughes

Now a Post-Doc at UChicago

Dan Smith

Now at Bank of America

In The News


Our lab's work has been featured....

In Alan Alda's Podcast.

In Brian Keating's Podcast.



On Wired.

In Symmetry Magazine.

In Scientific American.

Again in Symmetry Magazine.

On Interactions.

From the White House.

Contact Us

Our lab is part of the Kavli Institute of Cosmological Physics in the new Eckhardt Research Center at the University of Chicago.

We can be reached at 773-834-2988 or things can be shipped to Abigail Vieregg, University of Chicago, 5640 S. Ellis Ave - ERC 429, Chicago, IL 60637.

We are always looking for new group members (undergraduates, graduate students, and postdocs)! Contact Abby ( if you're interested in working with us.