Air Shower Events of High-Energy Cosmic Rays Measured at Seoul, South Korea

2011 ◽  
Author(s):  
Wooram Cho ◽  
Jae-ik Shin ◽  
Hongki Kim ◽  
Seulgi Lee ◽  
Sunin Lim ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
South Korea ◽  
High Energy ◽  
High Energy Cosmic Rays ◽  
Air Shower

scholarly journals Cross Section and Asymmetry Measurement of Very Forward Neutral Particle Production at RHIC

2016 ◽  
Vol 40 ◽  
pp. 1660110
Author(s):  
Yuji Goto
Keyword(s):  
Cosmic Rays ◽  
Particle Production ◽  
Spin Asymmetry ◽  
High Energy ◽  
Transverse Spin ◽  
Proton Collisions ◽  
High Energy Cosmic Rays ◽  
Air Shower ◽  
Production Processes ◽  
Polarized Proton

Although air shower observations at the surface of the earth have been developed in order to understand the origin of the ultra high energy cosmic rays, the observations have uncertainties in interpretation of the observed data from the present phenomenological nuclear collision models. Precision measurements of the very forward particle production in the collider experiments improve understanding of particle production processes in the nuclear collisions, and provide large influences on interpretation of the observed data and the origin of the cosmic rays. On the other hand, a large 10% single transverse-spin asymmetry in neutron production from transversely polarized proton collisions was found at the RHIC collider at BNL. It has provided a valuable input for understanding particle production processes in the polarized proton collisions. We will have a new collider experiment at RHIC which has a high resolution and a wide coverage of transverse momentum measurements in order to figure out elementary processes of the air shower generation.

scholarly journals CODALEMA: A COSMIC RAY AIR SHOWER RADIO DETECTION EXPERIMENT

2006 ◽  
Vol 21 (supp01) ◽  
pp. 192-196 ◽  
Author(s):  
D. ARDOUIN ◽  
A. BELLETOILE ◽  
D. CHARRIER ◽  
R. DALLIER ◽  
L. DENIS ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
Cosmic Ray ◽  
High Energy ◽  
Ultra High Energy ◽  
Air Showers ◽  
Detection Experiment ◽  
Transient Signals ◽  
High Energy Cosmic Rays ◽  
Air Shower ◽  
Radio Detection

The CODALEMA experimental device currently detects and characterizes the radio contribution of cosmic ray air showers : arrival directions and electric field topologies of radio transient signals associated to cosmic rays are extracted from the antenna signals. The measured rate, about 1 event per day, corresponds to an energy threshold around 5.1016eV. These results allow to determine the perspectives offered by the present experimental design for radiodetection of Ultra High Energy Cosmic Rays at a larger scale.

scholarly journals Air showers, hadronic models, and muon production

2019 ◽  
Vol 210 ◽  
pp. 02007
Author(s):  
S. J. Sciutto
Keyword(s):  
Cosmic Rays ◽  
Simulated Data ◽  
High Energy ◽  
Simulation System ◽  
Experimental Measurements ◽  
Ultra High Energy ◽  
Air Showers ◽  
High Energy Cosmic Rays ◽  
Air Shower ◽  
Muon Production

We report on a study about some characteristics of muon production during the development of extended air showers initiated by ultra-high-energy cosmic rays. Using simulations with the recent new version of the AIRES air shower simulation system, we analyze and discuss on the observed discrepancies between experimental measurements and simulated data.

Estimation of mass composition of high energy cosmic rays via modeling a relation between lateral distribution parameters and shower age

2017 ◽  
Vol 26 (14) ◽  
pp. 1750161
Author(s):  
Saeed Doostmohammadi
Keyword(s):  
Cosmic Rays ◽  
Simulated Data ◽  
High Energy ◽  
Lateral Distribution ◽  
Mass Composition ◽  
Air Showers ◽  
Extensive Air Shower ◽  
High Energy Cosmic Rays ◽  
Air Shower ◽  
Distribution Parameters

Lateral distribution function of extensive air showers of energetic cosmic rays, indicate how secondary particles spread over a surface detectors. There are many different universal formulas between lateral distribution parameters and shower age parameter which can be used to infer about maximum development of extensive air shower (which is a key parameter to estimate the mass composition of primary cosmic rays). At present work, an estimated percent of mass composition of ultra-high energy cosmic rays is investigated by comparison between Ivanov et al. modeling of simulated data, which has been done by CoRSiKa, and Yakutsk experimental data.

scholarly journals The Pierre Auger Observatory status and latest results

2019 ◽  
Vol 206 ◽  
pp. 07001
Author(s):  
Corinne Berat
Keyword(s):  
Cosmic Rays ◽  
Open Science ◽  
High Energy ◽  
Pierre Auger Observatory ◽  
Large Array ◽  
Ultra High Energy ◽  
Extensive Air Shower ◽  
High Energy Cosmic Rays ◽  
Air Shower ◽  
Key Questions

Ultra-high energy cosmic rays represent the most energetic particles available to scientists. These particles have macroscopic energies, exceeding 1 EeV,but their detectionisa challenge, their flux beingvery weak, around one particle per square kilometer per century for the highest energies. The Pierre Auger Observatory, in Argentina, is the present flagship experiment studying ultra-high energy cosmic rays. The combination of a large array of surface detectors covering 3000 km2 and fluorescence telescopes enhances the performances of the extensive air shower detection and measurements, resulting in both high statistics and unprecedented data quality. Moreover, the operation of a denser sub-array has extended the sensitivity to lower energies. Altogether, these well performing detectors contribute to providing important information on key questions on cosmic rays in the energy range from 0.1 EeV up to 100 EeV, as highlighted in this presentation of the latest results obtained by the Pierre Auger Collaboration. Despite a large number of valuable results, the understanding of the nature and the origin of the highest energy cosmic rays remains an open science case that the Auger Collaboration is willing to address with the AugerPrime project.

The Highest Energy Cosmic Rays, A Review and Prospects

2003 ◽  
Vol 214 ◽  
pp. 399-408
Author(s):  
Masaki Fukushima
Keyword(s):  
Cosmic Rays ◽  
Present Status ◽  
High Energy ◽  
Arrival Direction ◽  
High Energy Cosmic Rays ◽  
Air Shower

The existence of extremely high energy cosmic rays (EHECRs) with energy above 1020eV have been reported by several air shower experiments. The sources of these cosmic rays were considered to be extra-galactic. Relevant high energy astrophysical sources were searched in the arrival direction of these cosmic rays but no appropriate candidates were found. The origin of EHECRs stays unexplained. We review the present status of EHECR studies and introduce several new experiments aiming to unveil its mysterious origin.

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