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: We are developing an interferometric phased array trigger for radio detection of ultra-high energy neutrinos, and are deploying an 8-channel system with the ARA experiment at the South Pole in January 2018. Over the next few years, we will scale up this technology to 100 channels, and implement the technique on balloon-borne and ground-based experiments. We are also leading an analysis that searches for ultra-high energy neutrinos in data from the ANITA experiment.

Precision Measurements of CMB Polarization: We collaborate on the Keck Array and BICEP3 experiments, which are a suite of telescopes that make precision measurements of the polarization of the CMB to learn about an inflationary period in the very early universe. We are also collaborating on CMB-S4, a future large-scale, ground-based CMB experiment.

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


Ongoing Projects



ARA

The ARA experiment is a ground-based radio detector for ultra-high energy neutrinos located at the South Pole. We are currently deploying 3 more ARA stations at the South Pole, bringing the total number to 6. At Chicago, we are leading the development and deployment of a new interferometric phased array trigger that will improve instrument sensitivity dramatically. We are also scaling up the phased array trigger technique to push the energy threshold down.

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ANITA

The ANITA experiment is a NASA long-duration balloon experiment that detects the radio signals generated via the Askaryan effect from ultra-high energy neutrinos interacting in the Antarctic ice sheet. The fourth flight of ANITA flew in December 2016 in Antarctica, with world-leading sensitivity to the highest energy neutrinos, and we are leading an analysis effort to search for ultra-high energy neutrinos with ANITA data.

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The Keck Array & BICEP3

The Keck Array and BICEP3 is a suite of telescopes at the South Pole that observes the microwave sky on degree angular scales to make precision measurements of the polarization of the Cosmic Microwave Background. The Keck Array and BICEP3 follow up on the detection of B-mode polarization by BICEP2, looking for the pattern imprinted on the CMB by gravitational waves created during Inflation. Between them, the Keck Array and BICEP3 currently observe at four frequencies (95, 150, 220, and 250 GHz)

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Select Recent Publications and News


SELECTED LATEST JOURNAL PUBLICATIONS

"Dynamic Tunable Notch Filters for the Antarctic Impulsive Transient Antenna (ANITA)", arXiv:1709.04536 (2017)

"Development Toward a Ground-Based Interferometric Phased Array for Radio Detection of High Energy Neutrinos", NIM 869:46-55 (2017)

"CMB-S4 Technology Book, First Edition", arXiv:1706.02464 (2017)

"Radio Detection of High Energy Neutrinos, in Neutrino Astronomy, Current Status, Future Prospects", World Scientific (2016)

"BICEP2/ Keck Array VIII: Measurement of Gravitational Lensing from Large-Scale B-mode Polarization", ApJ 833:2 (2016)

"Characteristics of Four Upward-pointing Cosmic-ray-like Events Observed with ANITA", PRL 117, 071101 (2016)

"Keck Array VI: Improved Constraints on Cosmology and Foregrounds when Adding 95 GHz Data from the Keck Array", PRL 116, 031302 (2016)

"Accelerator Measurements of Magnetically-induced Radio Emission from Particle Cascades with Applications to Cosmic-ray Air Showers", PRL, 116, 141103 (2016)

"Energy and Flux Measurements of Ultra-High Energy Cosmic Rays Observed During the First ANITA Flight", Astroparticle Physics, 77:32-43 (2016)

"A New Technique for Detection of PeV Neutrinos Using a Phased Radio Array", JCAP 2016:02 (2016)

"A Joint Analysis of BICEP2/Keck Array and Planck Data", PRL 114, 101301 (2015)

"BICEP2/KECK Array IV. Optical Characterization and Performance of the BICEP2 and Keck Array Experiments" , ApJ 806:206 (2015)

"An in situ measurement of the radio-frequency attenuation in ice at Summit Station, Greenland", Journal of Glaciology 61:229 (2014)

"BICEP2 2014 I: Detection of B-mode Polarization at Degree Angular Scales by BICEP2 ", PRL 112, 241101, (2014)


Our Team


Abigail Vieregg

Assistant Professor, Physics, Enrico Fermi Institute, KICP. Ph.D., UCLA, 2010.

CV . Publications . Polar Blog



Cosmin Deaconu

Postdoctoral Scholar, ANITA/ARA, Ph.D. MIT 2015.

Eric Oberla

Postdoctoral Scholar, ARA/ANITA, Ph.D. Chicago 2015.

Nicole Larsen

KICP Fellow, Keck Array/BICEP3, Ph.D. Yale 2015.


Andrew Ludwig

Physics Graduate Student, ANITA/ARA

Kaeli Hughes

Physics Graduate Student, ANITA/ARA


MaCheaux Ransom

Physics AB, UChicago '19.

Hawkins Clay

Physics AB, UChicago '19.

Shoshana Chipman

Physics AB, UChicago '20.


Alumni




Chris Sheehy

Now a Goldhaber Fellow at Brookhaven.

Keith Bechtol

Now an assistant professor at Wisconsin-Madison.

Jessica Avva

Now a Graduate Student at UC Berkeley.

Christopher Hughes

Former Undergraduate Student

Sophia Kim

Former Undergraduate Student

Jon Kyl

Former Undergraduate Student

John Bowen

Former Undergraduate Student

Isaac Malsky

Former Undergraduate Student

Samantha Gilbert

Former Undergraduate Student


Outreach



Abby volunteers for Astronomy Conversations at the Adler Planetarium, an opportunity for museum guests to ask science questions to working scientists.

Cosmin works with the Space Explorers Program, directly working with urban youth.


In The News



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

 

On The Kavli Foundation's webpage.

In Symmetry Magazine.

In Scientific American.

Again in Symmetry Magazine.

On PBS.

In a podcast from McGill.


Contact Us



Our lab is part of the Kavli Insitute 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. Contact Abby (avieregg@kicp.uchicago.edu) if you're interested in working with us.