scholarly journals Mass Composition of Cosmic Rays with Combined Surface Detector Arrays

2017 ◽  
Author(s):  
Jakub Vicha ◽  
Dalibor Nosek ◽  
Petr Travnicek ◽  
Jan Ebr
Keyword(s):  
Cosmic Rays ◽  
Mass Composition ◽  
Detector Arrays ◽  
Surface Detector

scholarly journals Recent results from the Pierre Auger Observatory

2019 ◽  
Vol 208 ◽  
pp. 08001 ◽  
Author(s):  
Sergio Petrera
Keyword(s):  
Energy Spectrum ◽  
Cosmic Rays ◽  
Large Scale ◽  
Cosmic Ray ◽  
Pierre Auger Observatory ◽  
Mass Composition ◽  
Arrival Direction ◽  
Wide Range ◽  
Surface Detector

In this paper some recent results from the Pierre Auger Collaboration are presented. These are the measurement of the energy spectrum of cosmic rays over a wide range of energies (1017.5 to above 1020 eV), studies of the cosmic-ray mass composition with the fluorescence and surface detector of the Observatory, the observation of a large-scale anisotropy in the arrival direction of cosmic rays above 8 × 1018 eV and indications of anisotropy at intermediate angular scales above 4 × 1019 eV. The astrophysical implications of the spectrum and composition results are also discussed. Finally the progress of the upgrade of the Observatory, AugerPrime is presented.

scholarly journals Ultra-high-energy cosmic rays mass composition studies with the Telescope Array Surface Detector data

2018 ◽  
Vol 191 ◽  
pp. 08007
Author(s):  
Yana Zhezher
Keyword(s):  
Monte Carlo ◽  
Cosmic Rays ◽  
High Energy ◽  
Atomic Mass ◽  
Mass Composition ◽  
Ultra High Energy ◽  
Telescope Array ◽  
High Energy Cosmic Rays ◽  
Comparison Results ◽  
Surface Detector

The results on ultra-high energy cosmic rays’ chemical composition based on the data from the Telescope Array surface detector are reported. The analysis is based the boosted decision tree (BDT) multivariate analysis built upon 14 observables related to both the properties of the shower front and the lateral distribution function. The multivariate classifier is trained with Monte-Carlo sets: proton-induced, which is considered as background events, and ironinduced, considered as signal events. The classifier results in a single variable ξ for data and Monte-Carlo sets, available for one-dimensional analysis. The data to Monte-Carlo comparison results in an average atomic mass of UHECR for energy range 1018:0 - 1020:0 eV. The average atomic mass of primary particles corresponds to 〈ln A〉 = 1:52± 0:08(stat.)± 0:1(syst.). The comparison with TA hybrid composition results and the other experiments is presented.

scholarly journals Mass composition of ultrahigh-energy cosmic rays with the Telescope Array Surface Detector data

2019 ◽  
Vol 99 (2) ◽  
Author(s):  
R. U. Abbasi ◽  
M. Abe ◽  
T. Abu-Zayyad ◽  
M. Allen ◽  
R. Azuma ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
Mass Composition ◽  
Ultrahigh Energy ◽  
Telescope Array ◽  
Surface Detector ◽  
Ultrahigh Energy Cosmic Rays

scholarly journals Depth of shower maximum and mass composition of cosmic rays from 50 PeV to 2 EeV measured with the LOFAR radio telescope

2021 ◽  
Vol 103 (10) ◽  
Author(s):  
A. Corstanje ◽  
S. Buitink ◽  
H. Falcke ◽  
B. M. Hare ◽  
J. R. Hörandel ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
Radio Telescope ◽  
Mass Composition ◽  
Shower Maximum

Energy spectrum and mass composition of high-energy cosmic rays

2003 ◽  
Vol 66 (7) ◽  
pp. 1145-1206 ◽  
Author(s):  
Andreas Haungs ◽  
Heinigerd Rebel ◽  
Markus Roth
Keyword(s):  
Energy Spectrum ◽  
Cosmic Rays ◽  
High Energy ◽  
Mass Composition ◽  
High Energy Cosmic Rays

The promise of the Tunka-Grande scintillation experiment for studying the mass composition of primary cosmic rays

2015 ◽  
Vol 70 (2) ◽  
pp. 160-165 ◽  
Author(s):  
N. M. Budnev ◽  
A. L. Ivanova ◽  
N. N. Kalmykov ◽  
L. A. Kuzmichev ◽  
V. P. Sulakov ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
Mass Composition ◽  
Primary Cosmic Rays

Mass composition of primary cosmic rays at energies of 1–1000 PeV according to data of experiment “Pamir”

2006 ◽  
Vol 151 (1) ◽  
pp. 236-239 ◽  
Author(s):  
V.S. Puchkov ◽  
A.S. Borisov ◽  
Z.M. Guseva ◽  
V.G. Denisova ◽  
E.A. Kanevskaya ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
Mass Composition ◽  
Primary Cosmic Rays

ULTRA HIGH ENERGY COSMIC RAYS WITH THE PIERRE AUGER OBSERVATORY

2012 ◽  
Vol 18 ◽  
pp. 221-229
Author(s):  
◽  
J. R. T. DE MELLO NETO
Keyword(s):  
Energy Spectrum ◽  
Cosmic Rays ◽  
Cross Section ◽  
High Energy ◽  
Pierre Auger Observatory ◽  
Mass Composition ◽  
Ultra High Energy ◽  
High Energy Cosmic Rays ◽  
The Status ◽  
Shower Maximum

We present the status and the recent measurements from the Pierre Auger Observatory. The energy spectrum is described and its features discussed. We report searches for anisotropy of cosmic rays arrival directions in large scales and through correlation with catalogues of celestial objects. The measurement of the cross section proton-air is discussed. Finally, the mass composition is addressed with the measurements of the variation of the depth of shower maximum with energy and with the muon density at ground.

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