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Paul Sommers

Professor, University of Utah

Ph.D., University of Texas, Austin, 1973
 
Contact Information
Phone: (801) 581-6203
Email: sommersphysics.utah.edu
WWW: Web Site

 
Research
Picture: Research
The Auger Observatory attacks fundamental puzzles posed by high energy cosmic rays.
The highest energy cosmic rays pose some intriguing puzzles: How do they get their energies? Why do their arrival directions not point to special astrophysical objects? Why is the spectrum not terminated near 6x10<sup>19</sup> eV by particle collisions with the cosmic microwave radiation? The Auger Project is an ambitious international effort to resolve these questions.

Ongoing Scientific Projects:

 
KICP Publications
2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2004


Latest Journal Publications
  1. "Probing the origin of ultra-high-energy cosmic rays with neutrinos in the EeV energy range using the Pierre Auger Observatory", Journal of Cosmology and Astroparticle Physics, Issue 10, article id. 022 (2019) (Oct 2019)
  2. "The Pierre Auger Observatory: Contributions to the 36th International Cosmic Ray Conference (ICRC 2019)", arXiv:1909.09073 (Sep 2019)
  3. "Probing the origin of ultra-high-energy cosmic rays with neutrinos in the EeV energy range using the Pierre Auger Observatory", arXiv:1906.07422 (Jun 2019)
  4. "Limits on point-like sources of ultra-high-energy neutrinos with the Pierre Auger Observatory", arXiv:1906.07419 (Jun 2019)
  5. "Multi-Messenger Physics with the Pierre Auger Observatory", arXiv:1904.11918 (Apr 2019)
  6. "Measurement of the average shape of longitudinal profiles of cosmic-ray air showers at the Pierre Auger Observatory", Journal of Cosmology and Astroparticle Physics, Issue 03, article id. 018 (2019) (Mar 2019)
  7. "Data-driven estimation of the invisible energy of cosmic ray showers with the Pierre Auger Observatory", arXiv:1901.08040 (Jan 2019)
  8. "Large-scale Cosmic-Ray Anisotropies above 4 EeV Measured by the Pierre Auger Observatory", The Astrophysical Journal, Volume 868, Issue 1, article id. 4, 12 pp. (2018) (Nov 2018)
  9. "Observation of inclined EeV air showers with the radio detector of the Pierre Auger Observatory", Journal of Cosmology and Astroparticle Physics, Issue 10, article id. 026 (2018) (Oct 2018)
  10. "An Indication of Anisotropy in Arrival Directions of Ultra-high-energy Cosmic Rays through Comparison to the Flux Pattern of Extragalactic Gamma-Ray Sources", The Astrophysical Journal Letters, Volume 853, Issue 2, article id. L29, 10 pp. (2018) (Feb 2018)
  11. "Search for High-energy Neutrinos from Binary Neutron Star Merger GW170817 with ANTARES, IceCube, and the Pierre Auger Observatory", The Astrophysical Journal Letters, Volume 850, Issue 2, article id. L35, 18 pp. (2017) (Dec 2017)
  12. "Calibration of the logarithmic-periodic dipole antenna (LPDA) radio stations at the Pierre Auger Observatory using an octocopter", Journal of Instrumentation, Volume 12, Issue 10, pp. T10005 (2017) (Oct 2017)
  13. "Spectral calibration of the fluorescence telescopes of the Pierre Auger Observatory", Astroparticle Physics, Volume 95, p. 44-56 (Oct 2017)
  14. "Inferences on Mass Composition and Tests of Hadronic Interactions from 0.3 to 100 EeV using the water-Cherenkov Detectors of the Pierre Auger Observatory", arXiv:1710.07249 (Oct 2017)
  15. "Multi-messenger Observations of a Binary Neutron Star Merger", The Astrophysical Journal Letters, Volume 848, Issue 2, article id. L12, 59 pp. (2017) (Oct 2017)
  16. "Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 1018 eV", Science, Volume 357, Issue 6357, pp. 1266-1270 (2017) (Sep 2017)
  17. "The Pierre Auger Observatory: Contributions to the 35th International Cosmic Ray Conference (ICRC 2017)", arXiv:1708.06592 (Aug 2017)
  18. "Multi-resolution anisotropy studies of ultrahigh-energy cosmic rays detected at the Pierre Auger Observatory", Journal of Cosmology and Astroparticle Physics, Issue 06, article id. 026 (2017) (Jun 2017)
  19. "Search for photons with energies above 1018 eV using the hybrid detector of the Pierre Auger Observatory", Journal of Cosmology and Astroparticle Physics, Issue 04, article id. 009 (2017) (Apr 2017)
  20. "Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory", Journal of Cosmology and Astroparticle Physics, Issue 04, article id. 038 (2017) (Apr 2017)