Christopher Williams

KICP Graduate student


Scientific Advisor: Paolo Privitera
 
Contact Information
Phone: (773) 702-0162
Location: LASR 215
Email: Christopherwuchicago.edu
WWW: Web Site
 
Research
Scientific Advisor: Paolo Privitera

I am a Ph.D. student at the University of Chicago, Department of Physics. I received my B.S. in Astronomy and Physics from The Ohio State University in 2008. My research interests are focused on experimental astrophysics of the highest energy phenomena. Currently, I am working on the Pierre Auger Observatory in Argentina developing new detection methods to observe Ultra High Energy Cosmic Rays using radio astronomy techniques. I am also interested in applying unique hardware and data analysis techniques to non-traditional problems in business, economics, and policy.

Ongoing Scientific Projects:
 
KICP Publications
2013 | 2012 | 2011 | 2010


Latest Journal Publications
  1. "Pierre Auger Observatory and Telescope Array: Joint Contributions to the 33rd International Cosmic Ray Conference (ICRC 2013)", arXiv:1310.0647 (Oct 2013)
  2. "The Air Microwave Yield (AMY) experiment - A laboratory measurement of the microwave emission from extensive air showers", arXiv:1310.4662 (Oct 2013)
  3. "Highlights from the Pierre Auger Observatory", arXiv:1310.4620 (Oct 2013)
  4. "Highlights from the Pierre Auger Observatory", arXiv:1310.4620 (Oct 2013)
  5. "The MIDAS telescope for microwave detection of ultra-high energy cosmic rays", Nuclear Instruments and Methods in Physics Research A, Volume 719, p. 70-80 (Aug 2013)
  6. "The Pierre Auger Observatory: Contributions to the 33rd International Cosmic Ray Conference (ICRC 2013)", arXiv:1307.5059 (Jul 2013)
  7. "Precise measurement of the absolute fluorescence yield of the 337 nm band in atmospheric gases", Astroparticle Physics, Volume 42, p. 90-102 (Feb 2013)
  8. "Constraints on the Origin of Cosmic Rays above 1018 eV from Large-scale Anisotropy Searches in Data of the Pierre Auger Observatory", The Astrophysical Journal Letters, Volume 762, Issue 1, article id. L13, 8 pp. (2013) (Jan 2013)
  9. "A Search for Point Sources of EeV Neutrons", The Astrophysical Journal, Volume 760, Issue 2, article id. 148, 11 pp. (2012) (Dec 2012)
  10. "Large-scale Distribution of Arrival Directions of Cosmic Rays Detected Above 1018 eV at the Pierre Auger Observatory", The Astrophysical Journal Supplement, Volume 203, Issue 2, article id. 34, 20 pp. (2012) (Dec 2012)
  11. "Results of a self-triggered prototype system for radio-detection of extensive air showers at the Pierre Auger Observatory", Journal of Instrumentation, Volume 7, Issue 11, pp. P11023 (2012) (Nov 2012)
  12. "Antennas for the detection of radio emission pulses from cosmic-ray induced air showers at the Pierre Auger Observatory", Journal of Instrumentation, Volume 7, Issue 10, pp. P10011 (2012) (Oct 2012)
  13. "Search for microwave emission from ultrahigh energy cosmic rays", Physical Review D, vol. 86, Issue 5, id. 051104 (Sep 2012)
  14. "Measurement of the Proton-Air Cross Section at s=57TeV with the Pierre Auger Observatory", Physical Review Letters, vol. 109, Issue 6, id. 062002 (Aug 2012)
  15. "Search for Point-like Sources of Ultra-high Energy Neutrinos at the Pierre Auger Observatory and Improved Limit on the Diffuse Flux of Tau Neutrinos", The Astrophysical Journal Letters, Volume 755, Issue 1, article id. L4, 7 pp. (2012) (Aug 2012)
  16. "Erratum to "The Lateral Trigger Probability function for the Ultra-High Energy Cosmic Ray Showers detected by the Pierre Auger Observatory" [Astroparticle Physics 35 (2011) 266-276]", Astroparticle Physics, Volume 35, Issue 10, p. 681-684 (May 2012)
  17. "Description of atmospheric conditions at the Pierre Auger Observatory using the Global Data Assimilation System (GDAS)", Astroparticle Physics, Volume 35, Issue 9, p. 591-607 (Apr 2012)
  18. "A search for anisotropy in the arrival directions of ultra high energy cosmic rays recorded at the Pierre Auger Observatory", Journal of Cosmology and Astroparticle Physics, Issue 04, id. 040 (2012) (Apr 2012)
  19. "Publisher's Note: Search for ultrahigh energy neutrinos in highly inclined events at the Pierre Auger Observatory [Phys. Rev. D 84, 122005 (2011)]", Physical Review D, vol. 85, Issue 2, id. 029902 (Jan 2012)
  20. "Search for signatures of magnetically-induced alignment in the arrival directions measured by the Pierre Auger Observatory", Astroparticle Physics, Volume 35, Issue 6, p. 354-361 (Jan 2012)

Latest Conference Proceedings
  1. "First results from the microwave air yield beam experiment (MAYBE): Measurement of GHz radiation for ultra-high energy cosmic ray detection", UHECR 2012 - International Symposium on Future Directions in UHECR Physics, CERN, Geneva, Edited by K.-H. Kampert; M. Fukushima; R. Engel; B. Pattison; EPJ Web of Conferences, Volume 53, id.08008 (Jun 2013)
  2. "The Air Microwave Yield (AMY) experiment to measure the GHz emission from air shower plasmas", UHECR 2012 - International Symposium on Future Directions in UHECR Physics, CERN, Geneva, Edited by K.-H. Kampert; M. Fukushima; R. Engel; B. Pattison; EPJ Web of Conferences, Volume 53, id.08011 (Jun 2013)
  3. "The AMY experiment to measure GHz radiation for Ultra-High Energy Cosmic Ray detection", Journal of Physics: Conference Series, Volume 409, Issue 1, article id. 012082 (2013) (Feb 2013)
  4. "Ultra-High Energy Cosmic Rays", American Astronomical Society, AAS Meeting #220, #511.03 (May 2012)
  5. "The Microwave Air Yield Beam Experiment (MAYBE): measurement of GHz radiation for Ultra-High Energy Cosmic Rays detection", American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #W7.007 (Mar 2012)
  6. "Precise Measurement of the Absolute Fluorescence Yield", INTERNATIONAL SYMPOSIUM ON THE RECENT PROGRESS OF ULTRA-HIGH ENERGY COSMIC RAY OBSERVATION. AIP Conference Proceedings, Volume 1367, pp. 29-33 (2011) (Sep 2011)
  7. "The MIDAS experiment: A prototype for the microwave emission of Ultra-High Energy Cosmic Rays", Nuclear Physics B Proceedings Supplements, Volume 215, Issue 1, p. 63-65 (Jun 2011)
  8. "Precise measurement of the absolute yield of fluorescence photons in atmospheric gases", Nuclear Physics B Proceedings Supplements, Volume 212, p. 356-361 (Mar 2011)
  9. "Microwave detection of air showers with the MIDAS experiment", Nuclear Physics B Proceedings Supplements, Volume 212, p. 329-335 (Mar 2011)
  10. "Precise measurement of the absolute yield of fluorescence photons in atmospheric gases", Nuclear Physics B Proceedings Supplements, Volume 212, p. 356-361 (Mar 2011)