The Telescope Array (TA) experiment consists of the Surface Detector (SD) array of 700 km2
coverage and 38 fluorescence detectors (FDs), and it continues observations of ultra high …

Ultra-high energy cosmic rays (UHECRs), whose energy are beyond $10^{18}~\mathrm {eV}
$, are the most energetic particles we have ever detected. The latest results seem to indicate …

In the same way as for previous series of international symposia on future directions in
UHECR physics, an inter-collaborative anisotropy working group (WG) has been …

The Telescope Array (TA) is the largest experiment in the northern hemisphere currently
studying the origin and nature of ultra-high-energy cosmic rays above∼ 1018 eV by …

We review the basic ideas on the origin of cosmic rays with energy in excess of~ 1019 eV, in
the light of the most recent observational findings. The limited statistics of events detected by …

This contribution summarizes the talks, posters, and discussions of the ECRS 2014, held in
Kiel, Germany-related to the research field of ultra-high energy cosmic rays (UHECR). Here …

The result of AGASA shows the extension of the cosmic ray energy spectrum above the GZK
cut-off. Several new generation experiments are planned or under construction to identify …

More than half a century after the discovery of ultra-high energy cosmic rays (UHECRs), their
origin is still an open question. The study of anisotropies in the arrival directions of such …

The composition of Ultra-High Energy Cosmic Rays (UHECR's) is important for the unsolved
question of their origin. The GZK cutoff [1],[2] has been seen by a number of experiments …

The Extreme Universe Space Observatory, on-board the Japanese Experimental Module of
the ISS (JEM-EUSO), mainly aims at unveiling the origin of the ultra high energy cosmic rays …