The cosmic-ray energy spectrum between 2 PeV and 2 EeV observed with the TALE detector in monocular mode

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00502262" target="_blank" >RIV/68378271:_____/18:00502262 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.3847/1538-4357/aada05" target="_blank" >http://dx.doi.org/10.3847/1538-4357/aada05</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-4357/aada05" target="_blank" >10.3847/1538-4357/aada05</a>

Result language

angličtina

Original language name

The cosmic-ray energy spectrum between 2 PeV and 2 EeV observed with the TALE detector in monocular mode

Original language description

We report on a measurement of the cosmic ray energy spectrum by the Telescope Array Low-Energy Extension (TALE) air fluorescence detector (FD). The TALE air FD is also sensitive to the Cherenkov light produced by shower particles. Low-energy cosmic rays, in the PeV energy range, are detectable by TALE as Cherenkov events. Using these events, we measure the energy spectrum from a low energy of similar to 2 PeV to an energy greater than 100 PeV. Above 100 PeV, TALE can detect cosmic rays using air fluorescence. This allows for the extension of the measurement to energies greater than a few EeV. In this paper, we describe the detector, explain the technique, and present results from a measurement of the spectrum using similar to 1000 hr of observation. The observed spectrum shows a clear steepening near 10(17.1) eV, along with an ankle-like structure at 10(16.2) eV. These features present important constraints on the origin of galactic cosmic rays and on propagation models.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10303 - Particles and field physics

Project

<a href="/en/project/EF15_003%2F0000437" target="_blank" >EF15_003/0000437: Cosmology, Gravity and the Dark Sector of the Universe</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Astrophysical Journal

ISSN

0004-637X

e-ISSN

—

Volume of the periodical

865

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

18

Pages from-to

1-18

UT code for WoS article

000445493000005

EID of the result in the Scopus database

2-s2.0-85053920773