Results 71 to 80 of about 19,659 (274)

Limits to Gauge Coupling in the Dark Sector Set by the Nonobservation of Instanton-Induced Decay of Super-Heavy Dark Matter in the Pierre Auger Observatory Data. [PDF]

open access: yesPhysical Review Letters, 2022
Instantons, which are nonperturbative solutions to Yang-Mills equations, provide a signal for the occurrence of quantum tunneling between distinct classes of vacua. They can give rise to decays of particles otherwise forbidden.
T. P. A. C. P. Abreu   +375 more
semanticscholar   +1 more source

The depth of the shower maximum of air showers measured with AERA [PDF]

open access: yesEPJ Web of Conferences, 2023
The Auger Engineering Radio Array (AERA), as part of the Pierre Auger Observatory, is an array of radio antennas probing the nature of ultra-high energy cosmic rays at energies around the transition from Galactic to extra-galactic origin. It measures the
Pont Bjarni
doaj   +1 more source

Aerosol Optical Depth from MODIS satellite data above the Pierre Auger Observatory

open access: yesEPJ Web of Conferences, 2019
Aerosol optical depth can be retrieved from measurements performed by Moderate Resolution Imaging Spectroradiometer (MODIS) satellite instrument. The MODIS satellite system includes two polar satellites, Terra and Aqua. Each of them flies over the Pierre
Borodai Nataliia
doaj   +1 more source

The Time Evolution of the Surface Detector of the Pierre Auger Observatory

open access: yesInternational Conference on Rebooting Computing, 2023
The surface detector array of the Pierre Auger Observatory, consisting of 1660 water Cherenkov tanks, has been in operation for nearly 20 years. During this long period of data acquisition, ageing effects in the detector response have been observed.
O. Zapparrata   +379 more
semanticscholar   +1 more source

Latest results from the Pierre Auger Observatory

open access: yesEPJ Web of Conferences, 2016
The Pierre Auger Observatory has been designed to investigate the origin and nature of Ultra High Energy Cosmic Rays (UHECR) with energies from 1017 to 1020 eV. In this paper we will review some of the most recent results obtained from data of the Pierre
Lhenry-Yvon Isabelle
doaj   +1 more source

Testing the Compatibility of the Depth of the Shower Maximum Measurements performed at Telescope Array and the Pierre Auger Observatory

open access: yesEPJ Web of Conferences, 2023
The Telescope Array and the Pierre Auger Observatory estimate the composition of ultra-high-energy cosmic rays by observing the distribution of depths of air-shower maxima, X max.
D. Bergman   +10 more
semanticscholar   +1 more source

Results from the Pierre Auger Observatory [PDF]

open access: yesAIP Conference Proceedings, 2012
The Pierre Auger Observatory was established to study the most energetic cosmic rays. We will discuss the status and the main results from the observatory. These include the measurement of the energy spectrum above 1018 eV, where we observe a suppression for energies larger than 3×1019 eV, and the different estimates of primary mass composition.
Pierre Auger Collaboration   +1 more
openaire   +1 more source

Enhancing the Pierre Auger Observatory to the 10^{17} to 10^{18.5} eV Range: Capabilities of an Infill Surface Array [PDF]

open access: yes, 2006
The Pierre Auger Observatory has been designed to study the highest-energy cosmic rays in nature (E > 10^{18.5} eV). The determination of their arrival direction, energy and composition is performed by the analysis of the atmospheric showers they produce.
A. Etchegoyen   +20 more
core   +2 more sources

Atmospheric aerosols at the Pierre Auger Observatory and environmental implications

open access: yes, 2012
The Pierre Auger Observatory detects the highest energy cosmic rays. Calorimetric measurements of extensive air showers induced by cosmic rays are performed with a fluorescence detector.
A. Bucholtz   +46 more
core   +3 more sources

Sensitivity of the combined fit of energy spectrum, shower depth distributions, and arrival directions at the Pierre Auger Observatory

open access: yesEPJ Web of Conferences, 2023
The Pierre Auger Observatory measures several characteristics of ultra-high-energy cosmic rays (UHECRs), most importantly the energy spectrum, the distribution of maximum shower depths and the arrival directions.
T. Bister
semanticscholar   +1 more source

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