Results 51 to 60 of about 19,659 (274)

Studying the nuclear mass composition of Ultra-High Energy Cosmic Rays with the Pierre Auger Observatory [PDF]

open access: yes, 2012
The Fluorescence Detector of the Pierre Auger Observatory measures the atmospheric depth, $X_{max}$, where the longitudinal profile of the high energy air showers reaches its maximum.
Allen J   +7 more
core   +2 more sources

Testing hadronic-model predictions of depth of maximum of air-shower profiles and ground-particle signals using hybrid data of the Pierre Auger Observatory [PDF]

open access: yesPhysical Review D
We test the predictions of hadronic interaction models regarding the depth of maximum of air-shower profiles, $X_{max}$, and ground-particle signals in water-Cherenkov detectors at 1000 m from the shower core, $S(1000)$, using the data from the ...
T. P. A. A. Halim   +369 more
semanticscholar   +1 more source

The energy spectrum of ultra-high energy cosmic rays measured at the Pierre Auger Observatory and the Telescope Array

open access: yesEPJ Web of Conferences, 2023
In the study of cosmic rays, the measurement of the energy spectrum of the primaries is one of the main issues and provides fundamental information on the most energetic phenomena in the Universe.
D. Bergman   +12 more
semanticscholar   +1 more source

A 3‐Year Sample of Almost 1,600 Elves Recorded Above South America by the Pierre Auger Cosmic‐Ray Observatory

open access: yesEarth and Space Science, Volume 7, Issue 4, April 2020., 2020
Abstract Elves are a class of transient luminous events, with a radial extent typically greater than 250 km, that occur in the lower ionosphere above strong electrical storms. We report the observation of 1,598 elves, from 2014 to 2016, recorded with unprecedented time resolution (100 ns) using the fluorescence detector (FD) of the Pierre Auger Cosmic ...
A. Aab   +389 more
wiley   +1 more source

A next-generation ground array for the detection of ultrahigh-energy cosmic rays: the Fluorescence detector Array of Single-pixel Telescopes (FAST) [PDF]

open access: yesEPJ Web of Conferences, 2019
The origin and nature of ultrahigh-energy cosmic rays (UHECRs) is one of the most intriguing and important mysteries in astroparticle physics. The two largest observatories currently in operation, the Telescope Array Experiment in central Utah, USA, and ...
Fujii Toshihiro   +18 more
doaj   +1 more source

Combined fit to the spectrum and composition data measured by the Pierre Auger Observatory including magnetic horizon effects

open access: yesInternational Conference on Rebooting Computing, 2023
The measurements by the Pierre Auger Observatory of the energy spectrum and mass composition of cosmic rays can be interpreted assuming the presence of two extragalactic source populations, one dominating the flux at energies above a few EeV and the ...
Juan M. Gonzalez   +380 more
semanticscholar   +1 more source

Where Is the Bottom of a Watershed?

open access: yesWater Resources Research, Volume 56, Issue 3, March 2020., 2020
Abstract Watersheds have served as one of our most basic units of organization in hydrology for over 300 years (Dooge, 1988, https://doi.org/10.1080/02626668809491223; McDonnell, 2017, https://doi.org/10.1038/ngeo2964; Perrault, 1674, https://www.abebooks.com/first‐edition/lorigine‐fontaines‐Perrault‐Pierre‐Petit‐Imprimeur/21599664536/bd). With growing
Laura E. Condon   +5 more
wiley   +1 more source

A Catalog of the Highest-energy Cosmic Rays Recorded during Phase I of Operation of the Pierre Auger Observatory [PDF]

open access: yesAstrophysical Journal Supplement Series, 2022
A catalog containing details of the highest-energy cosmic rays recorded through the detection of extensive air showers at the Pierre Auger Observatory is presented with the aim of opening the data to detailed examination.
T. P. A. A. Halim   +377 more
semanticscholar   +1 more source

TRY plant trait database – enhanced coverage and open access

open access: yesGlobal Change Biology, Volume 26, Issue 1, Page 119-188, January 2020., 2020
Plant traits—the morphological, anatomical, physiological, biochemical and phenological characteristics of plants—determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people.
Jens Kattge   +728 more
wiley   +1 more source

Impact of the magnetic horizon on the interpretation of the Pierre Auger Observatory spectrum and composition data [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics
The flux of ultra-high energy cosmic rays reaching Earth above the ankle energy (5 EeV) can be described as a mixture of nuclei injected by extragalactic sources with very hard spectra and a low rigidity cutoff.
T. P. A. A. Halim   +365 more
semanticscholar   +1 more source

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