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Št. zadetkov: 25
Mass composition of ultrahigh-energy cosmic rays with the Telescope Array Surface Detector data
R. U. Abbasi, Mitsuhiro Abe, T. Abu-Zayyad, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, J. P. Lundquist
Izvirni znanstveni članek
Oznake: UHECR;cosmic rays;composition;
The results on ultrahigh-energy cosmic rays (UHECR) mass composition obtained with the Telescope Array surface detector are presented. The analysis employs the Boosted Decision tree (BDT) multivariate analysis built upon 14 observables related to both the properties of the shower front and the later ...
Leto: 2019 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
Testing a reported correlation between arrival directions of ultra-high-energy cosmic rays and a flux pattern from nearby starburst galaxies using Telescope Array data
R. U. Abbasi, Mitsuhiro Abe, T. Abu-Zayyad, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, J. P. Lundquist
Izvirni znanstveni članek
Oznake: astroparticle physics;cosmic rays;starburst;data analysis;
The Pierre Auger Collaboration (Auger) recently reported a correlation between the arrival directions of cosmic rays with energies above 39 EeV and the flux pattern of 23 nearby starburst galaxies (SBGs). In this Letter, we tested the same hypothesis using cosmic rays detected by the Telescope Array ...
Leto: 2018 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
Evidence for declination dependence of ultrahigh energy cosmic ray spectrum in the northern hemisphere
R. U. Abbasi, Mitsuhiro Abe, T. Abu-Zayyad, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, J. P. Lundquist
Drugi članki ali sestavki
Oznake: astrophysics;high energy astrophysical phenomena;UHECR;cosmic rays;anisotropy;
The energy of the ultrahigh energy spectral cutoff was measured, integrating over the northern hemisphere sky, by the Telescope Array (TA) collaboration, to be 10^19.78±0.06 eV, in agreement with the High Resolution Fly's Eye (HiRes) experiment, whereas the Pierre Auger experiment, integrating ove ...
Leto: 2018 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
Depth of ultra high energy cosmic ray induced air shower maxima measured by the telescope array black rock and long ridge FADC fluorescence detectors and surface array in hybrid mode
R. U. Abbasi, Mitsuhiro Abe, T. Abu-Zayyad, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, J. P. Lundquist
Izvirni znanstveni članek
Oznake: cosmic rays;astroparticle physics;acceleration of particles;astrochemistry;
The Telescope Array (TA) observatory utilizes fluorescence detectors and surface detectors (SDs) to observe air showers produced by ultra high energy cosmic rays in Earth's atmosphere. Cosmic-ray events observed in this way are termed hybrid data. The depth of air shower maximum is related to the ma ...
Leto: 2018 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
Search for anisotropy in the ultra high energy cosmic ray spectrum using the telescope array surface detector
R. U. Abbasi, Mitsuhiro Abe, T. Abu-Zayyad, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, J. P. Lundquist
Drugi članki ali sestavki
Oznake: cosmic radiation;UHE;detectors;anisotropy;
The Telescope Array (TA) experiment is located in the western desert of Utah, USA, and observes ultra high energy cosmic rays (UHECRs) in the Northern hemisphere. At the highest energies, E>10~EeV, the shape of cosmic ray energy spectrum may carry an imprint of the source density distribution along ...
Leto: 2017 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
ǂThe ǂenergy spectrum of cosmic rays above 10[sup](17.2) eV measured by the fluorescence detectors of the Telescope Array experiment in seven years
R. U. Abbasi, Mitsuhiro Abe, T. Abu-Zayyad, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, J. P. Lundquist
Izvirni znanstveni članek
Oznake: cosmic rays;ultra-high energy;fluorescence detectors;energy spectrum;
The Telescope Array (TA) experiment is the largest detector to observe ultra-high-energy cosmic rays in the northern hemisphere. The fluorescence detectors at two stations of TA are newly constructed and have now completed seven years of steady operation. One advantage of monocular analysis of the f ...
Leto: 2016 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
Measurement of the proton-air cross section with Telescope Array's Middle Drum detector and surface array in hybrid mode
R. U. Abbasi, Mitsuhiro Abe, T. Abu-Zayyad, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, J. P. Lundquist
Izvirni znanstveni članek
Oznake: proton cross-section;cosmic rays;ultra-high energy;
Measurement of the proton-air cross section with Telescope Array’s Middle Drum detector and surface array in hybrid mode
Leto: 2015 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
Search for ultra-high-energy neutrinos with the Telescope Array surface detector
R. U. Abbasi, Mitsuhiro Abe, T. Abu-Zayyad, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, J. P. Lundquist
Drugi članki ali sestavki
Oznake: neutrinos;pattern recognition;UHECR;cosmic rays;
We present an upper limit on the flux of ultra-high-energy down-going neutrinos for E > 10^18 eV derived with the nine years of data collected by the Telescope Array surface detector (05-11-2008– 05-10-2017). The method is based on the multivariate analysis technique, so-called Boosted Decision Tre ...
Leto: 2020 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
Search for point sources of ultra-high-energy photons with the Telescope Array surface detector
R. U. Abbasi, Mitsuhiro Abe, T. Abu-Zayyad, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, J. P. Lundquist
Izvirni znanstveni članek
Oznake: data analysis;cosmic rays;gamma-rays;
The surface detector (SD) of the Telescope Array (TA) experiment allows us to detect indirectly photons with energies of the order of 10^18 eV and higher, and to separate photons from the cosmic ray background. In this paper, we present the results of a blind search for point sources of ultra-high-e ...
Leto: 2020 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
Constraints on the diffuse photon flux with energies above 10[sup](18) eV using the surface detector of the Telescope Array experiment
R. U. Abbasi, Mitsuhiro Abe, T. Abu-Zayyad, M. Allen, R. Azuma, E. Barcikowski, J. W. Belz, D. R. Bergman, S. A. Blake, J. P. Lundquist
Izvirni znanstveni članek
Oznake: ultra-high-energy photons;telescope array experiment;extensive air showers;energy spectrum;
We present the results of the search for ultra-high-energy photons with nine years of data from the Telescope Array surface detector. A multivariate classifier is built upon 16 reconstructed parameters of the extensive air shower. These parameters are related to the curvature and the width of the sh ...
Leto: 2019 Vir: Repozitorij Univerze v Novi Gorici (RUNG)
Št. zadetkov: 25
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