P. Assis

Research interests

Publications

• Measurement of the cosmic-ray energy spectrum above 2.5 × 10 18 eV using the Pierre Auger Observatory

  Physical review. D/Physical review. D. · 2020 · https://doi.org/10.1103/physrevd.102.062005

• Features of the Energy Spectrum of Cosmic Rays above 2.5 × 10 18 eV Using the Pierre Auger Observatory

  Physical Review Letters · 2020 · https://doi.org/10.1103/physrevlett.125.121106

• 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 · 2018 · https://doi.org/10.3847/2041-8213/aaa66d

• Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory

  Journal of Cosmology and Astroparticle Physics · 2017 · https://doi.org/10.1088/1475-7516/2017/04/038

• Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 10 18 eV

  Science · 2017 · https://doi.org/10.1126/science.aan4338

• Testing Hadronic Interactions at Ultrahigh Energies with Air Showers Measured by the Pierre Auger Observatory

  Physical Review Letters · 2016 · https://doi.org/10.1103/physrevlett.117.192001

• Energy estimation of cosmic rays with the Engineering Radio Array of the Pierre Auger Observatory

  Physical review. D/Physical review. D. · 2016 · https://doi.org/10.1103/physrevd.93.122005

• Improved limit to the diffuse flux of ultrahigh energy neutrinos from the Pierre Auger Observatory

  Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 2015 · https://doi.org/10.1103/physrevd.91.092008

• Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events

  Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 2015 · https://doi.org/10.1103/physrevd.91.032003

• The Pierre Auger Observatory: Contributions to the 34th International Cosmic Ray Conference (ICRC 2015)

  OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2015

• SEARCHES FOR ANISOTROPIES IN THE ARRIVAL DIRECTIONS OF THE HIGHEST ENERGY COSMIC RAYS DETECTED BY THE PIERRE AUGER OBSERVATORY

  The Astrophysical Journal · 2015 · https://doi.org/10.1088/0004-637x/804/1/15

• Depth of maximum of air-shower profiles at the Pierre Auger Observatory. II. Composition implications

  Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 2014 · https://doi.org/10.1103/physrevd.90.122006

• Depth of maximum of air-shower profiles at the Pierre Auger Observatory. I. Measurements at energies above 1 0 17.8 eV

  Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 2014 · https://doi.org/10.1103/physrevd.90.122005

• Measurement of the Proton-Air Cross Section at s=57 TeV with the Pierre Auger Observatory

  Physical Review Letters · 2012 · https://doi.org/10.1103/physrevlett.109.062002

• Antennas for the detection of radio emission pulses from cosmic-ray induced air showers at the Pierre Auger Observatory

  Journal of Instrumentation · 2012 · https://doi.org/10.1088/1748-0221/7/10/p10011

• Trigger and aperture of the surface detector array of the Pierre Auger Observatory

  Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment · 2010 · https://doi.org/10.1016/j.nima.2009.11.018

• The fluorescence detector of the Pierre Auger Observatory

  Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment · 2010 · https://doi.org/10.1016/j.nima.2010.04.023

• Measurement of the energy spectrum of cosmic rays above 1018 eV using the Pierre Auger Observatory

  Physics Letters B · 2010 · https://doi.org/10.1016/j.physletb.2010.02.013

• Measurement of the Depth of Maximum of Extensive Air Showers above 10 18 eV

  Physical Review Letters · 2010 · https://doi.org/10.1103/physrevlett.104.091101

• Upper limit on the cosmic-ray photon fraction at EeV energies from the Pierre Auger Observatory

  Astroparticle Physics · 2009 · https://doi.org/10.1016/j.astropartphys.2009.04.003

• Upper Limit on the Diffuse Flux of Ultrahigh Energy Tau Neutrinos from the Pierre Auger Observatory

  Physical Review Letters · 2008 · https://doi.org/10.1103/physrevlett.100.211101

• Correlation of the highest-energy cosmic rays with the positions of nearby active galactic nuclei

  Astroparticle Physics · 2008 · https://doi.org/10.1016/j.astropartphys.2008.01.002

• Upper limit on the cosmic-ray photon flux above 1019eV using the surface detector of the Pierre Auger Observatory

  Astroparticle Physics · 2008 · https://doi.org/10.1016/j.astropartphys.2008.01.003

• Observation of the Suppression of the Flux of Cosmic Rays above 4 × 10 19 eV

  Physical Review Letters · 2008 · https://doi.org/10.1103/physrevlett.101.061101

• Correlation of the Highest-Energy Cosmic Rays with Nearby Extragalactic Objects

  Science · 2007 · https://doi.org/10.1126/science.1151124

Current projects

No projects listed.