Publications (62)
Spectral Calibration of the Fluorescence Telescopes of the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +403
We present a novel method to measure precisely the relative spectral response of the fluorescence telescopes of the Pierre Auger Observatory. We used a portable light source based…
Muon Counting using Silicon Photomultipliers in the AMIGA detector of the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +422
AMIGA (Auger Muons and Infill for the Ground Array) is an upgrade of the Pierre Auger Observatory designed to extend its energy range of detection and to directly measure the muon…
Pierre Auger Observatory and Telescope Array: Joint Contributions to the 33rd International Cosmic Ray Conference (ICRC 2013)
The Telescope Array, Pierre Auger Collaborations, : +619
Joint contributions of the Pierre Auger and Telescope Array Collaborations to the 33rd International Cosmic Ray Conference, Rio de Janeiro, Brazil, July 2013: cross-calibration of…
Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +397
We present a combined fit of a simple astrophysical model of UHECR sources to both the energy spectrum and mass composition data measured by the Pierre Auger Observatory. The fit h…
Azimuthal asymmetry in the risetime of the surface detector signals of the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +436
The azimuthal asymmetry in the risetime of signals in Auger surface detector stations is a source of information on shower development. The azimuthal asymmetry is due to a combinat…
Search for correlations between the arrival directions of IceCube neutrino events and ultrahigh-energy cosmic rays detected by the Pierre Auger Observatory and the Telescope Array
The IceCube Collaboration, M. G. Aartsen, K. Abraham +863
This paper presents the results of different searches for correlations between very high-energy neutrino candidates detected by IceCube and the highest-energy cosmic rays measured…
Calibration of the Logarithmic-Periodic Dipole Antenna (LPDA) Radio Stations at the Pierre Auger Observatory using an Octocopter
The Pierre Auger Collaboration, A. Aab, P. Abreu +402
An in-situ calibration of a logarithmic periodic dipole antenna with a frequency coverage of 30 MHz to 80 MHz is performed. Such antennas are part of a radio station system used fo…
Time-Domain Measurement of Broadband Coherent Cherenkov Radiation
P. Miocinovic, R. C. Field, P. W. Gorham +5
We report on further analysis of coherent microwave Cherenkov impulses emitted via the Askaryan mechanism from high-energy electromagnetic showers produced at the Stanford Linear A…
A Targeted Search for Point Sources of EeV Neutrons
The Pierre Auger Collaboration, A. Aab, P. Abreu +482
A flux of neutrons from an astrophysical source in the Galaxy can be detected in the Pierre Auger Observatory as an excess of cosmic-ray air showers arriving from the direction of…
Observation of Plasma Focusing of a 28.5 GeV Positron Beam
J. S. T. Ng, P. Chen, H. Baldis +17
The observation of plasma focusing of a 28.5 GeV positron beam is reported. The plasma was formed by ionizing a nitrogen jet only 3 mm thick. Simultaneous focusing in both transver…
CRPropa - A Toolbox for Cosmic Ray Simulations
R. Alves Batista, J. Becker Tjus, A. Dundovic +11
The astrophysical interpretation of recent experimental observations of cosmic rays relies increasingly on Monte Carlo simulations of cosmic ray propagation and acceleration. Depen…
Results on Plasma Focusing of High Energy Density Electron and Positron Beams
J. S. T. Ng, P. Chen, W. Craddock +19
We present results from the SLAC E-150 experiment on plasma focusing of high energy density electron and, for the first time, positron beams. We also discuss measurements on plasma…
A targeted search for point sources of EeV photons with the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +397
Simultaneous measurements of air showers with the fluorescence and surface detectors of the Pierre Auger Observatory allow a sensitive search for EeV photon point sources. Several…
Highlights from the Pierre Auger Observatory
Antoine Letessier-Selvon, A. Aab, P. Abreu +494
The Pierre Auger Observatory is the world's largest cosmic ray observatory. Our current exposure reaches nearly 40,000 km str and provides us with an unprecedented quality data…
Search for signatures of magnetically-induced alignment in the arrival directions measured by the Pierre Auger Observatory
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +496
We present the results of an analysis of data recorded at the Pierre Auger Observatory in which we search for groups of directionally-aligned events (or `multiplets') which exhibit…
Search for High-energy Neutrinos from Binary Neutron Star Merger GW170817 with ANTARES, IceCube, and the Pierre Auger Observatory
A. Albert, M. Andre, M. Anghinolfi +1931
The Advanced LIGO and Advanced Virgo observatories recently discovered gravitational waves from a binary neutron star inspiral. A short gamma-ray burst (GRB) that followed the merg…
Antennas for the Detection of Radio Emission Pulses from Cosmic-Ray induced Air Showers at the Pierre Auger Observatory
P. Abreu, M. Aglietta, M. Ahlers +512
The Pierre Auger Observatory is exploring the potential of the radio detection technique to study extensive air showers induced by ultra-high energy cosmic rays. The Auger Engineer…
The Antarctic Impulsive Transient Antenna Ultra-high Energy Neutrino Detector Design, Performance, and Sensitivity for 2006-2007 Balloon Flight
ANITA collaboration, P. Gorham, P. Allison +40
We present a detailed report on the experimental details of the Antarctic Impulsive Transient Antenna (ANITA) long duration balloon payload, including the design philosophy and rea…
New Limits on the Ultra-high Energy Cosmic Neutrino Flux from the ANITA Experiment
ANITA collaboration, P. Gorham, P. Allison +40
We report initial results of the first flight of the Antarctic Impulsive Transient Antenna (ANITA-1) 2006-2007 Long Duration Balloon flight, which searched for evidence of a diffus…
Prototype muon detectors for the AMIGA component of the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +451
Auger Muons and Infill for the Ground Array) is an upgrade of the Pierre Auger Observatory to extend its range of detection and to directly measure the muon content of the particle…
The IceCube Neutrino Observatory, the Pierre Auger Observatory and the Telescope Array: Joint Contribution to the 34th International Cosmic Ray Conference (ICRC 2015)
IceCube Collaboration, M. G. Aartsen, K. Abraham +884
We have conducted three searches for correlations between ultra-high energy cosmic rays detected by the Telescope Array and the Pierre Auger Observatory, and high-energy neutrino c…
The Pierre Auger Observatory II: Studies of Cosmic Ray Composition and Hadronic Interaction models
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +493
Studies of the composition of the highest energy cosmic rays with the Pierre Auger Observatory, including examination of hadronic physics effects on the structure of extensive air…
Search for a new gauge boson in the Experiment (APEX)
S. Abrahamyan, Z. Ahmed, K. Allada +63
We present a search at Jefferson Laboratory for new forces mediated by sub-GeV vector bosons with weak coupling to electrons. Such a particle can be produced in electron…
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
The Pierre Auger Collaboration, A. Aab, P. Abreu +403
We present a new method for probing the hadronic interaction models at ultra-high energy and extracting details about mass composition. This is done using the time profiles of the…
Observations of the Askaryan Effect in Ice
ANITA collaboration, P. W. Gorham, S. W. Barwick +38
We report on the first observations of the Askaryan effect in ice: coherent impulsive radio Cherenkov radiation from the charge asymmetry in an electromagnetic (EM) shower. Such ra…
A search for ultra-high energy neutrinos in highly inclined events at the Pierre Auger Observatory
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +497
The Surface Detector of the Pierre Auger Observatory is sensitive to neutrinos of all flavours above 0.1 EeV. These interact through charged and neutral currents in the atmosphere…
Nanosecond-level time synchronization of autonomous radio detector stations for extensive air showers
The Pierre Auger Collaboration, A. Aab, P. Abreu +448
To exploit the full potential of radio measurements of cosmic-ray air showers at MHz frequencies, a detector timing synchronization within 1 ns is needed. Large distributed radio d…
Indication of anisotropy in arrival directions of ultra-high-energy cosmic rays through comparison to the flux pattern of extragalactic gamma-ray sources
The Pierre Auger Collaboration, A. Aab, P. Abreu +390
A new analysis of the dataset from the Pierre Auger Observatory provides evidence for anisotropy in the arrival directions of ultra-high-energy cosmic rays on an intermediate angul…
Description of Atmospheric Conditions at the Pierre Auger Observatory using the Global Data Assimilation System (GDAS)
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +499
Atmospheric conditions at the site of a cosmic ray observatory must be known for reconstructing observed extensive air showers. The Global Data Assimilation System (GDAS) is a glob…
Observations of Microwave Continuum Emission from Air Shower Plasmas
P. W. Gorham, N. G. Lehtinen, G. S. Varner +16
We investigate a possible new technique for microwave measurements of ultra-high energy cosmic ray (UHECR) extensive air showers which relies on detection of expected continuum rad…
Reconstruction of inclined air showers detected with the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +485
We describe the method devised to reconstruct inclined cosmic-ray air showers with zenith angles greater than detected with the surface array of the Pierre Auger Observa…
Testing Hadronic Interactions at Ultrahigh Energies with Air Showers Measured by the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +435
Ultrahigh energy cosmic ray air showers probe particle physics at energies beyond the reach of accelerators. Here we introduce a new method to test hadronic interaction models with…
Observation of a Large-scale Anisotropy in the Arrival Directions of Cosmic Rays above eV
The Pierre Auger Collaboration, A. Aab, P. Abreu +404
Cosmic rays are atomic nuclei arriving from outer space that reach the highest energies observed in nature. Clues to their origin come from studying the distribution of their arriv…
A search for point sources of EeV photons
Pierre Auger Collaboration, A. Aab, P. Abreu +483
Measurements of air showers made using the hybrid technique developed with the fluorescence and surface detectors of the Pierre Auger Observatory allow a sensitive search for point…
The effect of the geomagnetic field on cosmic ray energy estimates and large scale anisotropy searches on data from the Pierre Auger Observatory
P. Abreu, M. Aglietta, E. J. Ahn +495
We present a comprehensive study of the influence of the geomagnetic field on the energy estimation of extensive air showers with a zenith angle smaller than , detected a…
Searches for Large-Scale Anisotropy in the Arrival Directions of Cosmic Rays Detected above Energy of eV at the Pierre Auger Observatory and the Telescope Array
The Pierre Auger, Telescope Array Collaborations, : +605
Spherical harmonic moments are well-suited for capturing anisotropy at any scale in the flux of cosmic rays. An unambiguous measurement of the full set of spherical harmonic coeffi…
The Pierre Auger Observatory IV: Operation and Monitoring
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +493
Technical reports on operations and monitoring of the Pierre Auger Observatory
In situ radioglaciological measurements near Taylor Dome, Antarctica and implications for UHE neutrino astronomy
D. Besson, J. Jenkins, S. Matsuno +40
Radiowave detection of the Cherenkov radiation produced by neutrino-ice collisions requires an understanding of the radiofrequency (RF) response of cold polar ice. We herein report…
The Pierre Auger Observatory: Contributions to the 34th International Cosmic Ray Conference (ICRC 2015)
The Pierre Auger Collaboration, A. Aab, P. Abreu +449
Contributions of the Pierre Auger Collaboration to the 34th International Cosmic Ray Conference, 30 July - 6 August 2015, The Hague, The Netherlands
Multi-resolution anisotropy studies of ultrahigh-energy cosmic rays detected at the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +400
We report a multi-resolution search for anisotropies in the arrival directions of cosmic rays detected at the Pierre Auger Observatory with local zenith angles up to and…
The Pierre Auger Observatory I: The Cosmic Ray Energy Spectrum and Related Measurements
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +493
Studies of the cosmic ray energy spectrum at the highest energies with the Pierre Auger Observatory
Observation of inclined EeV air showers with the radio detector of the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +392
With the Auger Engineering Radio Array (AERA) of the Pierre Auger Observatory, we have observed the radio emission from 561 extensive air showers with zenith angles between 60$^\ci…
The Rapid Atmospheric Monitoring System of the Pierre Auger Observatory
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +508
The Pierre Auger Observatory is a facility built to detect air showers produced by cosmic rays above 10^17 eV. During clear nights with a low illuminated moon fraction, the UV fluo…
Measurements of Coherent Cherenkov Radiation in Rock Salt: Implications for GZK Neutrino Underground Detector
R. Milincic, P. W. Gorham, D. Saltzberg +4
This paper has been withdrawn by the author, due to a misunderstanding about publication.
CRPropa: a public framework to propagate UHECRs in the universe
R. Alves Batista, M. Erdmann, C. Evoli +7
To answer the fundamental questions concerning the origin and nature of ultra-high energy cosmic rays (UHECRs), it is important to confront data with simulated astrophysical scenar…
Evidence for a mixed mass composition at the `ankle' in the cosmic-ray spectrum
The Pierre Auger Collaboration, A. Aab, P. Abreu +423
We report a first measurement for ultra-high energy cosmic rays of the correlation between the depth of shower maximum and the signal in the water Cherenkov stations of air-showers…
The Pierre Auger Observatory V: Enhancements
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +493
Ongoing and planned enhancements of the Pierre Auger Observatory
Air fluorescence measurements in the spectral range 300-420 nm using a 28.5 GeV electron beam
R. Abbasi, T. Abu-Zayyad, K. Belov +34
Measurements are reported of the yield and spectrum of fluorescence, excited by a 28.5 GeV electron beam, in air at a range of pressures of interest to ultra-high energy cosmic ray…
Accelerator Measurements of the Askaryan effect in Rock Salt: A Roadmap Toward Teraton Underground Neutrino Detectors
P. W. Gorham, D. Saltzberg, R. C. Field +4
We report on further SLAC measurements of the Askaryan effect: coherent radio emission from charge asymmetry in electromagnetic cascades. We used synthetic rock salt as the dielect…
Characteristics of Four Upward-pointing Cosmic-ray-like Events Observed with ANITA
P. W. Gorham, J. Nam, A. Romero-Wolf +66
We report on four radio-detected cosmic-ray (CR) or CR-like events observed with the Antarctic Impulsive Transient Antenna (ANITA), a NASA-sponsored long-duration balloon payload.…
Pierre Auger Observatory and Telescope Array: Joint Contributions to the 34th International Cosmic Ray Conference (ICRC 2015)
Telescope Array Collaboration, R. U. Abbasi, M. Abe +573
Joint contributions of the Pierre Auger Collaboration and the Telescope Array Collaboration to the 34th International Cosmic Ray Conference, 30 July - 6 August 2015, The Hague, The…
The Pierre Auger Observatory III: Other Astrophysical Observations
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +493
Astrophysical observations of ultra-high-energy cosmic rays with the Pierre Auger Observatory
Energy and Flux Measurements of Ultra-High Energy Cosmic Rays Observed During the First ANITA Flight
H. Schoorlemmer, K. Belov, A. Romero-Wolf +55
The first flight of the Antarctic Impulsive Transient Antenna (ANITA) experiment recorded 16 radio signals that were emitted by cosmic-ray induced air showers. For 14 of these even…
Ultrahigh-energy neutrino follow-up of Gravitational Wave events GW150914 and GW151226 with the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +410
On September 14, 2015 the Advanced LIGO detectors observed their first gravitational-wave (GW) transient GW150914. This was followed by a second GW event observed on December 26, 2…
The Pierre Auger Observatory Upgrade - Preliminary Design Report
The Pierre Auger Collaboration, A. Aab, P. Abreu +462
The Pierre Auger Observatory has begun a major Upgrade of its already impressive capabilities, with an emphasis on improved mass composition determination using the surface detecto…
Search for photons with energies above 10 eV using the hybrid detector of the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +397
A search for ultra-high energy photons with energies above 1 EeV is performed using nine years of data collected by the Pierre Auger Observatory in hybrid operation mode. An unprec…
Upward-Pointing Cosmic-Ray-like Events Observed with ANITA
Andres Romero-Wolf, P. W. Gorham, J. Nam +73
These proceedings address a recent publication by the ANITA collaboration of four upward- pointing cosmic-ray-like events observed in the first flight of ANITA. Three of these even…
Search for ultrarelativistic magnetic monopoles with the Pierre Auger Observatory
The Pierre Auger Collaboration, A. Aab, P. Abreu +411
We present a search for ultra-relativistic magnetic monopoles with the Pierre Auger Observatory. Such particles, possibly a relic of phase transitions in the early universe, would…
Observation of Ultra-high-energy Cosmic Rays with the ANITA Balloon-borne Radio Interferometer
S. Hoover, J. Nam, P. W. Gorham +42
We report the observation of sixteen cosmic ray events of mean energy of 1.5 x 10^{19} eV, via radio pulses originating from the interaction of the cosmic ray air shower with the A…
Comparison of air fluorescence and ionization measurements of E.M. shower depth profiles: test of a UHECR detector technique
J. Belz, Z. Cao, P. Huentemeyer +27
Measurements are reported on the fluorescence of air as a function of depth in electromagnetic showers initiated by bunches of 28.5 GeV electrons. The light yield is compared with…
The International Linear Collider beam dumps
R. Appleby, L. Keller, T. Markiewicz +3
The ILC beam dumps are a key part of the accelerator design. At Snowmass 2005, the current status of the beam dump designs were reviewed, and the options for the overall dump layou…
The Pierre Auger Observatory: Contributions to the 35th International Cosmic Ray Conference (ICRC 2017)
The Pierre Auger Collaboration, A. Aab, P. Abreu +394
Contributions of the Pierre Auger Collaboration to the 35th International Cosmic Ray Conference (ICRC 2017), 12-20 July 2017, Bexco, Busan, Korea.