399 citations · 1.7k across the 22 of their papers we have counts for
22 papers
Observations of the Origin of Downward Terrestrial Gamma-Ray Flashes
J. W. Belz, P. R. Krehbiel, J. Remington +137
In this paper we report the first close, high-resolution observations of downward-directed terrestrial gamma-ray flashes (TGFs) detected by the large-area Telescope Array cosmic ra…
Measurement of the Proton-Air Cross Section with Telescope Array's Black Rock Mesa and Long Ridge Fluorescence Detectors, and Surface Array in Hybrid Mode
R. U. Abbasi, M. Abe, T. Abu-Zayyad +140
Ultra high energy cosmic rays provide the highest known energy source in the universe to measure proton cross sections. Though conditions for collecting such data are less controll…
Constraints on the diffuse photon flux with energies above eV using the surface detector of the Telescope Array experiment
Telescope Array Collaboration, R. U. Abbasi, M. Abe +139
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 rec…
Mass composition of ultra-high-energy cosmic rays with the Telescope Array Surface Detector Data
Telescope Array Collaboration, R. U. Abbasi, M. Abe +139
The results on ultra-high-energy cosmic rays (UHECR) mass composition obtained with the Telescope Array surface detector are presented. The analysis employs the boosted decision tr…
Study of muons from ultra-high energy cosmic ray air showers measured with the Telescope Array experiment
Telescope Array Collaboration, R. U. Abbasi, M. Abe +138
One of the uncertainties in interpretation of ultra-high energy cosmic ray (UHECR) data comes from the hadronic interaction models used for air shower Monte Carlo (MC) simulations.…
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
Telescope Array Collaboration, R. U. Abbasi, M. Abe +135
The Telescope Array observatory utilizes fluorescence detectors and surface detectors to observe air showers produced by ultra high energy cosmic rays in the Earth's atmosphere. Co…
Evidence for Declination Dependence of the Ultrahigh Energy Cosmic Ray Spectrum in the Northern Hemisphere
R. U. Abbasi, T. Abu-Zayyad, M. Allen +154
Telescope Array (TA) is the largest experiment in the Northern Hemisphere studying ultrahigh energy cosmic rays. TA measurements of the cosmic ray spectrum using the surface detect…
Search for EeV Protons of Galactic Origin
R. U. Abbasi, M. Abe, T. Abu-Zayyad +126
Cosmic rays in the energy range - eV are thought to have a light, probably protonic, composition. To study their origin one can search for anisotropy in the…
First Upper Limits on the Radar Cross Section of Cosmic-Ray Induced Extensive Air Showers
R. U. Abbasi, M. Abe, M. Abou Bakr Othman +135
TARA (Telescope Array Radar) is a cosmic ray radar detection experiment colocated with Telescope Array, the conventional surface scintillation detector (SD) and fluorescence telesc…
Pierre Auger Observatory and Telescope Array: Joint Contributions to the 34th International Cosmic Ray Conference (ICRC 2015)
Telescope Array Collaboration, R. U. Abbasi, M. Abe +573
Joint contributions of the Pierre Auger Collaboration and the Telescope Array Collaboration to the 34th International Cosmic Ray Conference, 30 July - 6 August 2015, The Hague, The…
The Energy Spectrum of Cosmic Rays above 10 eV Measured by the Fluorescence Detectors of the Telescope Array Experiment in Seven Years
The Telescope Array Collaboration
The Telescope Array (TA) experiment is the largest detector to observe ultra-high-energy cosmic rays in the northern hemisphere. The fluorescence detectors at southern two stations…
Study of Ultra-High Energy Cosmic Ray Composition Using Telescope Array's Middle Drum Detector and Surface Array in Hybrid Mode
R. U. Abbasi, M. Abe, T. Abu-Zayyad +123
Previous measurements of the composition of Ultra-High Energy Cosmic Rays(UHECRs) made by the High Resolution Fly's Eye(HiRes) and Pierre Auger Observatory(PAO) are seemingly contr…
Pierre Auger Observatory and Telescope Array: Joint Contributions to the 33rd International Cosmic Ray Conference (ICRC 2013)
The Telescope Array, Pierre Auger Collaborations, : +619
Joint contributions of the Pierre Auger and Telescope Array Collaborations to the 33rd International Cosmic Ray Conference, Rio de Janeiro, Brazil, July 2013: cross-calibration of…
Energy Spectrum of Ultra-High Energy Cosmic Rays Observed with the Telescope Array Using a Hybrid Technique
T. Abu-Zayyad, R. Aida, M. Allen +141
We measure the spectrum of cosmic rays with energies greater than eV with the Fluorescence Detectors (FDs) and the Surface Detectors (SDs) of the Telescope Array Experi…
The Energy Spectrum of Ultra-High-Energy Cosmic Rays Measured by the Telescope Array FADC Fluorescence Detectors in Monocular Mode
The Telescope Array Collaboration, T. Abu-Zayyad, R. Aida +141
We present a measurement of the energy spectrum of ultra-high-energy cosmic rays performed by the Telescope Array experiment using monocular observations from its two new FADC-base…
Upper limit on the flux of photons with energies above 10^19 eV using the Telescope Array surface detector
T. Abu-Zayyad, R. Aida, M. Allen +138
We search for ultra-high energy photons by analyzing geometrical properties of shower fronts of events registered by the Telescope Array surface detector. By making use of an event…
Calibration of Photomultiplier Tubes for the Fluorescence Detector of Telescope Array Experiment using a Rayleigh Scattered Laser Beam
Shingo Kawana, Nobuyuki Sakurai, Toshihiro Fujii +12
We performed photometric calibration of the PhotoMultiplier Tube (PMT) and readout electronics used for the new fluorescence detectors of the Telescope Array (TA) experiment using…
The Energy Spectrum of Telescope Array's Middle Drum Detector and the Direct Comparison to the High Resolution Fly's Eye Experiment
T. Abu-Zayyad, R. Aida, M. Allen +137
The Telescope Array's Middle Drum fluorescence detector was instrumented with telescopes refurbished from the High Resolution Fly's Eye's HiRes-1 site. The data observed by Middle…
The surface detector array of the Telescope Array experiment
T. Abu-Zayyad, R. Aida, M. Allen +134
The Telescope Array (TA) experiment, located in the western desert of Utah,USA, is designed for observation of extensive air showers from extremely high energy cosmic rays. The exp…
New air fluorescence detectors employed in the Telescope Array experiment
H. Tokuno, Y. Tameda, M. Takeda +134
Since 2007, the Telescope Array (TA) experiment, based in Utah, USA, has been observing ultra high energy cosmic rays to understand their origins. The experiment involves a surface…
The atmospheric transparency measured with a LIDAR system at the Telescope Array experiment
Takayuki Tomida, Yusuke Tsuyuguchi, Takahito Arai +17
An atmospheric transparency was measured using a LIDAR with a pulsed UV laser (355nm) at the observation site of Telescope Array in Utah, USA. The measurement at night for two year…
Solar Neutron Event in Association with a Large Solar Flare on November 24, 2000
K. Watanabe, Y. Muraki, Y. Matsubara +15
Solar neutrons have been detected using the neutron monitor located at Mt. Chacaltaya, Bolivia, in association with a large solar flare on November 24, 2000. This is the first dete…