Highlights from the Telescope Array experiment

Grigory I. Rubtsov (Author), R. U. Abbasi (Author), T. Abu-Zayyad (Author), M. Allen (Author), Yasuhiko Arai (Author), R. Arimura (Author), E. Barcikowski (Author), J. W. Belz (Author), D. R. Bergman (Author), J. P. Lundquist (Author)

Abstract

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 showers between 2 PeV and 100 EeV in hybrid mode using multiple instruments, including an array of scintillator detectors at the Earth's surface and telescopes to measure the fluorescence and Cerenkov light. The statistics at the highest energies is being enhanced with the ongoing construction of the TAx4 experiment which will quadruple the surface area of the detector. We review the present status of the experiments and most recent physics results on the cosmic ray anisotropy, chemical composition and energy spectrum. Notable highlights include a new feature in the energy spectrum at about 10^19.2 eV, and a new clustering of events in the direction of Perseus-Pisces supercluster above this energy. We also report on updated diffuse photon flux limits and new spectrum and composition results in the lower energy range from the TALE extension.

Keywords

Telescope Array;TALE;low energy extension;TAx4;indirect detection;hybrid detection;ground array;fluorescence detection;Cherenkov light;ultra-high energy;cosmic rays;energy spectrum;composition;anisotropy;

Data

Language:	English
Year of publishing:	2022
Typology:	1.06 - Published Scientific Conference Contribution (invited lecture)
Organization:	UNG - University of Nova Gorica
UDC:	539.1
COBISS:	165883907
ISSN:	1824-8039
Views:	331
Downloads:	5
Average score:	0 (0 votes)
Metadata:

Other data

Type (COBISS):	Not categorized
Pages:	str. 1-15
Chronology:	2022
DOI:	10.22323/1.395.0012
ID:	21815667