Jul 12 – 23, 2021
Europe/Berlin timezone

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

Jul 15, 2021, 12:00 PM
1h 30m


Talk CRI | Cosmic Ray Indirect Discussion


Toshiyuki Nonaka (Institute for Cosmic Ray Research , University of Tokyo)


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 present the search for differences in spectrum shape in different parts of the sky using latest data of TA surface detector (SD) data. From this study, we observe an apparent enhancement in the region of the northern sky that contain nearby objects, such as the super-galactic plane. Details of this analysis will be presented.


Ultra high energy cosmic ray, cosmic ray propagation

Subcategory Experimental Results
Collaboration Telescope Array

Primary author

Toshiyuki Nonaka (Institute for Cosmic Ray Research , University of Tokyo)


Presentation materials