Daiki Shinto

Mass composition of ultra-high energy cosmic rays from distribution of their arrival directions with the Telescope Array

Telescope Array Collaboration, Yasuaki Abe, T. Abu-Zayyad, M. Allen et autres

We use a new method to estimate the injected mass composition of ultrahigh cosmic rays (UHECRs) at energies higher than 10 EeV. The method is based on comparison of the energy-dependent distribution of cosmic ray arrival directions as measured by the Telescope …

Highlights from the Telescope Array Experiment

Jihyun Kim, Yasuaki Abe, T. Abu-Zayyad, Y. Arai et autres

The Telescope Array (TA) is the largest ultra-high energy cosmic ray (UHECR) observatory in the Northern Hemisphere. Together with the TA Low Energy Extension (TALE), TA$\times$4, and TALE infill detector, the TA measures the properties of UHECR-induced extensive air showers (EAS) in …

Possible interpretations of the joint observations of UHECR arrival directions using data recorded at the Telescope Array and the Pierre Auger Observatory

M. Kuznetsov, Adila Abdul Halim, P. Abreu, M. Aglietta et autres

Various hints for anisotropies in the distribution of arrival directions of ultra-high-energy cosmic rays (UHECRs) have been reported. Still, our poor knowledge about intergalactic and Galactic magnetic fields and about the UHECR mass composition makes it non-trivial to interpret such results in …

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Status of the DIMS project for macroscopic dark matter search using ultra-high sensitivity CMOS cameras at the Telescope Array UHECR observatory

K. Shinozaki, Michal Vrábel, M. Przybylak, Mateusz Kojro et autres

The nature of dark matter has been the subject of ongoing investigation in fields such as particle physics, cosmology, and astrophysics. One hypothetical form of dark matter is nuggets of strange quark matter, also known as nuclearites. They are characterized by a …

The energy spectrum of cosmic rays measured by the Telescope Array using 10 years of fluorescence detector data

Yasuaki Abe, T. Abu‐Zayyad, M. Allen, Y. Arai et autres

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Observation of variations in cosmic ray single count rates during thunderstorms and implications for large-scale electric field changes

Rasha Abbasi, T. Abu‐Zayyad, M. Allen, Yuto Arai et autres

We present the first observation by the Telescope Array Surface Detector (TASD) of the effect of thunderstorms on the development of cosmic ray single count rate intensity over a $700\text{ }\text{ }{\mathrm{km}}^{2}$ area. Observations of variations in the secondary low-energy cosmic ray …

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Highlights from the Telescope Array experiment

Г. И. Рубцов, T. Abu‐Zayyad, Monica Allen, Yuto Arai et autres

The Telescope Array (TA) is the largest cosmic ray observatory in the Northern Hemisphere. It is designed to measure the properties of cosmic rays over a wide range of energies. TA with it's low energy extension (TALE) observe cosmic-ray induced extensive air …

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Indications of a Cosmic Ray Source in the Perseus-Pisces Supercluster

Telescope Array Collaboration, T. Abu‐Zayyad, M. Allen, Y. Arai et autres

The Telescope Array Collaboration has observed an excess of events with $E \ge 10^{19.4} ~{\rm eV}$ in the data which is centered at (RA, dec) = ($19^\circ$, $35^\circ$). This is near the center of the Perseus-Pisces supercluster (PPSC). The PPSC is about …

The atmospheric transparency of Telescope Array observation site by the CLF

Takayuki Tomida, T. Abu‐Zayyad, Monica Allen, Yuto Arai et autres

The Telescope Array (TA) experiment continues to observe Ultra High Energy Cosmic Rays(UHECRs) both with its original TA detectors as well as with the new TAx4 expansion detectors.These observations employ Fluorescence Detectors (FDs) to capture the air shower induced bythe primary UHECRs. …

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Study on the cosmic ray intensity variation using scintillation counters for air shower observation

T. Nonaka, T. Abu‐Zayyad, Monica Allen, Yuto Arai et autres

We report a study on the conversion of a giant cosmic ray observatory for air shower observation to observe cosmic ray intensity variations caused by solar activity, anisotropy associated with interplanetary disturbances, and detection of sudden cosmic ray events on the earth's …

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Anisotropy search in the Ultra High Energy Cosmic Ray Spectrum in the Northern Hemisphere using latest data obtained with Telescope Array surface detector

T. Nonaka, T. Abu‐Zayyad, Monica Allen, Yuto Arai et autres

The Telescope Array (TA) experiment is located in the western desert of Utah, USA and observes ultra-high energy cosmic rays in the northern hemisphere. At the energies, the shape of the cosmic ray energy spectrum carries information of the source distribution. We …

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The measurements of the cosmic ray energy spectrum and the depth of maximum shower development of Telescope Array Hybrid trigger events

Heungsu Shin, T. Abu‐Zayyad, Monica Allen, Yuto Arai et autres

The Telescope Array experiment is an ultra-high energy cosmic ray observatory located in Millard County, Utah, USA. The observatory consists of 3 fluorescence detector (FD) stations and 507 surface detectors (SD) that cover an area of ~$700~ {\rm km}^2$. Hybrid trigger is …

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