A5020949526- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Laser-Plasma Interactions and Diagnostics
- Neutrino Physics Research
- Radio Astronomy Observations and Technology
- Gamma-ray bursts and supernovae
- Particle physics theoretical and experimental studies
- Magnetic confinement fusion research
- Chalcogenide Semiconductor Thin Films
- Advanced Surface Polishing Techniques
- Atmospheric Ozone and Climate
- Particle accelerators and beam dynamics
- Lightning and Electromagnetic Phenomena
- Photocathodes and Microchannel Plates
- Nonlinear Optical Materials Studies
- Ionosphere and magnetosphere dynamics
- Atomic and Molecular Physics
- Ion-surface interactions and analysis
- Space Technology and Applications
- Particle Detector Development and Performance
- High-pressure geophysics and materials
- Quantum Dots Synthesis And Properties
- Astronomy and Astrophysical Research
- Computational Physics and Python Applications
- Earthquake Detection and Analysis
Dalian University of Technology
2023-2025
National Sun Yat-sen University
2025
University of Utah
2013-2018
The University of Tokyo
2016-2017
We have searched for intermediate-scale anisotropy in the arrival directions of ultrahigh-energy cosmic rays with energies above 57~EeV northern sky using data collected over a 5 year period by surface detector Telescope Array experiment. report on cluster events that we call hotspot, found oversampling 20$^\circ$-radius circles. The hotspot has Li-Ma statistical significance 5.1$\sigma$, and is centered at R.A.=146.7$^{\circ}$, Dec.=43.2$^{\circ}$. position about 19$^{\circ}$ off...
The Telescope Array (TA) collaboration has measured the energy spectrum of ultra-high cosmic rays with primary energies above 1.6 x 10^(18) eV. This measurement is based upon four years observation by surface detector component TA. shows a dip at an 4.6 eV and steepening 5.4 10^(19) which consistent expectation from GZK cutoff. We present results technique, new to analysis ray data, that involves generating complete simulation striking TA detector. procedure starts shower simulations using...
In this work, optical nonlinearity of PVD grown Cr2Te3 thin film 33 and 100 nm thickness with huge thermal effect was investigated. By removing the thermally-induced background signal,...
Abstract Bursts of gamma ray showers have been observed in coincidence with downward propagating negative leaders lightning flashes by the Telescope Array Surface Detector (TASD). The TASD is a 700‐km 2 cosmic observatory located southwestern Utah, USA. In data collected between 2014 and 2016, correlated observations showing structure temporal development three shower‐producing were obtained 3‐D mapping array, electric field change measurements for an additional seven flashes, both cases...
We search for correlations between positions of extragalactic objects and arrival directions Ultra-High Energy Cosmic Rays (UHECRs) with primary energy $E \ge 40$ EeV as observed by the surface detector array Telescope Array (TA) experiment during first 40 months operation. examined several public astronomical object catalogs, including Veron-Cetty Veron catalog active galactic nuclei. counted number TA events correlated in each a function three parameters: maximum angular separation event...
In this work we are reporting on the measurement of proton-air inelastic cross section $\sigma^{\rm inel}_{\rm p-air}$ using Telescope Array (TA) detector. Based proton-proton $\sigma_{\rm p-p}$ value is also determined at $\sqrt{s} = 95_{-8}^{+5}$ TeV. Detecting cosmic ray events ultra high energies with enables us to study fundamental parameter that otherwise unable access particle accelerators. The data used in report hybrid observed by Middle Drum fluorescence detector together surface...
The study of beam–plasma interactions is important in many research fields, such as astrophysics, inertial confinement fusion, and high-energy density physics. Considering the significant impact electromagnetic fields on evolution systems, comprehensive three-dimensional modeling system needed. In this work, a relativistic particle-in-cell code IBMP3D developed for investigations beam transport plasmas. To save computation time achieve fast simulation, dynamic array data structure combined...
We search for ultra-high energy photons by analyzing geometrical properties of shower fronts events registered the Telescope Array surface detector. By making use an event-by-event statistical method, we derive upper limits on absolute flux primary with energies above 1019, 1019.5, and 1020 eV based first three years data taken.Received 20 April 2013DOI:https://doi.org/10.1103/PhysRevD.88.112005© 2013 American Physical Society
Joint contributions of the Pierre Auger Collaboration and Telescope Array to 34th International Cosmic Ray Conference, 30 July - 6 August 2015, The Hague, Netherlands.
We investigate in this work the photon radiation of relativistic electron beams magnetic fields induced by plasma current filamentation instability. An analytical model is proposed, and radiated power shown to depend only on beam density, charge, energy. The beam–plasma system increases significantly linear stage instability due filament merger becomes saturated nonlinear stage. Detailed electromagnetic particle-in-cell simulations are performed scalings with parameters found, showing good...
We report on the search for steady point-like sources of neutral particles around 10$^{18}$ eV between 2008 May and 2013 with scintillator surface detector Telescope Array experiment. found overall no significant excess above 0.5 EeV in northern sky. Subsequently, we also searched coincidence Fermi bright Galactic sources. No was within statistical uncertainty. Hence, set an upper limit neutron flux that corresponds to averaged 0.07 km$^{-2}$ yr$^{-1}$ $E>1$ sky at 95% confidence level. This...
We report on the experimental observation of focusing effect a $50\phantom{\rule{0.16em}{0ex}}\mathrm{MeV}$ accelerator electron beam in gas-discharge plasma target. The is generated by igniting an electric discharge two collinear quartz tubes, with currents up to $1.5\phantom{\rule{0.16em}{0ex}}\mathrm{kA}$ flowing opposite directions either tubes. In such current configuration, defocused first tube and focused stronger force second one. With symmetric currents, asymmetric effects are,...
We report on abnormal topological structures in the particles and electromagnetic field distributions induced by current filamentation instability, with emphasis effects of plasma ions. In filament (PF) situation, transverse magnetic reaches its maximum at edge filaments, contrast to case beam (BF, i.e., filaments). An analytical model is proposed estimate response time electrons ions, which essential determine criterion PF occurrence. With increase energy density, decrease ion mass,...