Phone: (773) 702-1564
Location: ERC 331
Email: tcrawforkicp.uchicago.edu
WWW: Web Site
CV: Curriculum Vitae

I'm a Senior Research Associate in the Department of Astronomy & Astrophysics and the Kavli Institute for Cosmological Physics. at the University of Chicago For the past six years, I have worked on a single project: The 10-meter South Pole Telescope (SPT). The SPT is a millimeter-wave telescope designed to make sensitive measurements of diffuse, low-contrast emission, such as anisotropy in the cosmic microwave background (CMB). Equipped with a highly sensitive ~1000-element bolometer array operating at 95, 150, and 220 GHz, the SPT is capable of mapping the arcminute-scale anisotropy of the CMB to exquisite precision. The first goal of the SPT is to use the CMB as a backlight to discover distant, massive clusters of galaxies through their interaction with the CMB, known as the Sunyaev-Zel'dovich (SZ) effect.

In 2008, the SPT team reported the first successful use of SZ observations to find previously unknown clusters. More recently, the team has published the first cosmological constraints from an SZ-selected sample of clusters, the first detection of the SZ power spectrum, the first millimeter-wave detection of fluctuations in the cosmic infrared background, and the discovery of a new family of high-redshift star-forming galaxies.

In the seven years I have worked on this project, I have particpated in the design of the telescope, optics, and receiver; I have designed and built a protoype SPT receiver (which was used to qualify the secondary mirror and cold optics box); and now I am one of the leaders of the data analysis effort.

Ongoing Scientific Projects:

• South Pole Telescope (SPT)

Past Scientific Projects: Interferometric Sunyaev-Zel'dovich Effect Imaging Experiment (SZE)

2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2006 | 2005 | 2004 | 2003


Latest Journal Publications

1. "The SPTpol Extended Cluster Survey", arXiv:1910.04121 (Oct 2019)
2. "Measurements of B-mode Polarization of the Cosmic Microwave Background from 500 Square Degrees of SPTpol Data", arXiv:1910.05748 (Oct 2019)
3. "Constraints on Cosmological Parameters from the 500 deg$^2$ SPTpol Lensing Power Spectrum", arXiv:1910.07157 (Oct 2019)
4. "CMB-S4", Astro2020: Decadal Survey on Astronomy and Astrophysics, APC white papers, no. 209; Bulletin of the American Astronomical Society, Vol. 51, Issue 7, id. 209 (2019) (Sep 2019)
5. "Measurement of the splashback feature around SZ-selected Galaxy clusters with DES, SPT, and ACT", Monthly Notices of the Royal Astronomical Society, Volume 487, Issue 2, p.2900-2918 (Aug 2019)
6. "Dark Energy Survey Year 1 Results: Cross-correlation between Dark Energy Survey Y1 galaxy weak lensing and South Pole Telescope+P l a n c k CMB weak lensing", Physical Review D, Volume 100, Issue 4, id.043517 (Aug 2019)
7. "Measurements of the Cross-spectra of the Cosmic Infrared and Microwave Backgrounds from 95 to 1200 GHz", The Astrophysical Journal, Volume 881, Issue 2, article id. 96, 12 pp. (2019) (Aug 2019)
8. "Dark Energy Survey Year 1 Results: Tomographic cross-correlations between Dark Energy Survey galaxies and CMB lensing from South Pole Telescope +Planck", Physical Review D, Volume 100, Issue 4, id.043501 (Aug 2019)
9. "Dark Energy Survey year 1 results: Joint analysis of galaxy clustering, galaxy lensing, and CMB lensing two-point functions", Physical Review D, Volume 100, Issue 2, id.023541 (Jul 2019)
10. "Cosmological lensing ratios with DES Y1, SPT, and Planck", Monthly Notices of the Royal Astronomical Society, Volume 487, Issue 1, p.1363-1379 (Jul 2019)
11. "Consistency of cosmic microwave background temperature measurements in three frequency bands in the 2500-square-degree SPT-SZ survey", Journal of Cosmology and Astroparticle Physics, Issue 07, article id. 038 (2019) (Jul 2019)
12. "Fractional Polarisation of Extragalactic Sources in the 500-square-degree SPTpol Survey", arXiv:1907.02156 (Jul 2019)
13. "CMB-S4 Science Case, Reference Design, and Project Plan", arXiv:1907.04473 (Jul 2019)
14. "A Detection of CMB-Cluster Lensing using Polarization Data from SPTpol", arXiv:1907.08605 (Jul 2019)
15. "Galaxy Clusters Selected via the Sunyaev-Zel'dovich Effect in the SPTpol 100-Square-Degree Survey", arXiv:1907.09621 (Jul 2019)
16. "CMB-S4 Decadal Survey APC White Paper", arXiv:1908.01062 (Jul 2019)
17. "Cluster Cosmology Constraints from the 2500 deg2 SPT-SZ Survey: Inclusion of Weak Gravitational Lensing Data from Magellan and the Hubble Space Telescope", The Astrophysical Journal, Volume 878, Issue 1, article id. 55, 25 pp. (2019) (Jun 2019)
18. "Messengers from the Early Universe: Cosmic Neutrinos and Other Light Relics", Astro2020: Decadal Survey on Astronomy and Astrophysics, science white papers, no. 159; Bulletin of the American Astronomical Society, Vol. 51, Issue 3, id. 159 (2019) (May 2019)
19. "A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg$^2$ of SPTpol Temperature and Polarization Data", arXiv:1905.05777 (May 2019)
20. "Tracking the time-variable Millimeter-wave sky with CMB experiments", Astro2020: Decadal Survey on Astronomy and Astrophysics, science white papers, no. 331; Bulletin of the American Astronomical Society, Vol. 51, Issue 3, id. 331 (2019) (May 2019)

Latest Conference Proceedings

1. "Year two instrument status of the SPT-3G cosmic microwave background receiver", Proceedings of the SPIE, Volume 10708, id. 1070803 21 pp. (2018) (Jul 2018)
2. "Integrated performance of a frequency domain multiplexing readout in the SPT-3G receiver", Proceedings of the SPIE, Volume 9914, id. 99141D 11 pp. (2016) (Jul 2016)
3. "SPT-3G: a next-generation cosmic microwave background polarization experiment on the South Pole telescope", Proceedings of the SPIE, Volume 9153, id. 91531P 21 pp. (2014) (Jul 2014)
4. "Performance and on-sky optical characterization of the SPTpol instrument", Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI. Proceedings of the SPIE, Volume 8452, article id. 84521F, 15 pp. (2012) (Sep 2012)
5. "SPTpol: an instrument for CMB polarization measurements with the South Pole Telescope", Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI. Proceedings of the SPIE, Volume 8452, article id. 84521E, 18 pp. (2012) (Sep 2012)
6. "Feedhorn-coupled TES polarimeter camera modules at 150 GHz for CMB polarization measurements with SPTpol", Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI. Proceedings of the SPIE, Volume 8452, article id. 84523A, 15 pp. (2012) (Sep 2012)
7. "Design and characterization of 90 GHz feedhorn-coupled TES polarimeter pixels in the SPTPol camera", Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI. Proceedings of the SPIE, Volume 8452, article id. 845239, 12 pp. (2012) (Sep 2012)
8. "South Pole Telescope software systems: control, monitoring, and data acquisition", Software and Cyberinfrastructure for Astronomy II. Proceedings of the SPIE, Volume 8451, article id. 84510T, 11 pp. (2012) (Sep 2012)
9. "SPTpol: an instrument for CMB polarization", THE THIRTEENTH INTERNATIONAL WORKSHOP ON LOW TEMPERATURE DETECTORS-LTD13. AIP Conference Proceedings, Volume 1185, pp. 511-514 (2009) (Dec 2009)
10. "SPT-SZ: a Sunyaev-ZePdovich survey for galaxy clusters", THE THIRTEENTH INTERNATIONAL WORKSHOP ON LOW TEMPERATURE DETECTORS-LTD13. AIP Conference Proceedings, Volume 1185, pp. 475-477 (2009) (Dec 2009)

Past Visitors:

1. Alexander Krolewski, UC Berkeley (2019)
2. Graeme Addison, University of Oxford (2011)
3. Kenneth Nollett, Argonne National Laboratory (2009)
4. Jonathan Sievers, Canadian Institute for Theoretical Astrophysics (2009)
5. Matthew McQuinn, Harvard University (2008)
6. Laurie Shaw, McGill University (2008)