Mr
Armando di Matteo
(INFN and University of L'Aquila)
03/08/2015, 14:00
CR-EX
Oral contribution
We present a combined fit of both flux and composition of ultra-high energy cosmic rays as measured by the Pierre Auger Observatory. The fit has been performed for energies above $5{\times}10^{18}$ eV, the region of the all-particle spectrum above the so-called ``ankle'' feature. A simple astrophysical model has been adopted, consisting of identical sources, injecting nuclei with a rigidity...
Mr
Zachary Zundel
(University of Utah)
03/08/2015, 14:15
CR-EX
Oral contribution
Authors: Z. Zundel, for the Telescope Array Collaboration
Abstract:
The TA Collaboration has completed construction of a low-energy extension to its Middle Drum telescope station. Ten new telescopes were added observing 31-59 degrees in elevation above the original telescopes. A graded array of scintillators with spacing 400-600-1200m is being installed in in the space in front of the...
Takeshi Okuda
(Ritsumeikan University)
03/08/2015, 14:30
CR-EX
Oral contribution
The Telescope Array (TA) Surface particle Detector (TASD) has observed short time bursts of air-shower like events. Correlations were found between these burst events and lightning data. We report on the observed bursts of air-shower like events and their correlation with lightning.
Dr
Tareq AbuZayyad
(University of Utah)
03/08/2015, 14:45
CR-EX
Oral contribution
We report on a cosmic ray energy spectrum measurement by the Telescope Array Low-Energy extension (TALE) fluorescence detector (FD). The TALE FD is an air fluorescence detector which is also sensitive to the Cerenkov light produced by shower particles. Low energy cosmic rays, in the PeV energy range, are detectable by TALE as "Cerenkov Events". Using these events, we measure the energy...
Igor Petrov
(Yu. G. Shafer Institute of Cosmophysical Research and Aeronomy)
03/08/2015, 15:00
CR-EX
Oral contribution
The experimental data on the energy spectrum cosmic rays, obtained from Small Cherenkov Array in Yakutsk on the measurement of Cherenkov radiation in showers with energy 10^15 โ 10^18 eV are discussed. The data were obtained by means of continuous array operation since 1994. Found that the spectrum of the all particle in this energy region has a complex shape and cannot be described by a...
Andreas Haungs
(Karlsruhe Institute of Technology)
03/08/2015, 15:15
CR-EX
Oral contribution
At a few PeV the energy spectrum of high-energy cosmic rays exhibits a sudden change of the spectral index, usually known as the knee of the spectrum. The origin of this knee is seen as key for the understanding of galactic cosmic rays. KASCADE-Grande investigated with a multi-detector installation (including LOPES for measuring the radio emission of air showers) the elemental composition of...
Ms
Soheila Abdollahi
(Alborz Observatory, Sharif University of Technology)
03/08/2015, 15:30
CR-EX
Oral contribution
Alborz-I as the first phase of the Alborz Observatory Array supposed to study the cosmic ray spectrum around the knee at Sharif University of Technology, Tehran (1200 m a.s.l). In this paper theoretical results obtained from study of the design features, performance, technical characteristic and angular resolution of the Alborz-I consists of 20 scintillator detectors are described. Using a...
Sergio Dasso
(IAFE - CONICET - UBA)
03/08/2015, 15:45
CR-EX
Oral contribution
The Latin American Giant Observatory (LAGO) is an extended cosmic ray observatory composed by a network of water-Cherenkov detectors (WCDs) spanning over different sites located at significantly different altitudes (from sea level up to more than $5000$\,m a.s.l.) and latitudes across Latin America, covering a huge range of geomagnetic rigidity cut-offs and atmospheric absorption/reaction...
