The flux of ultra-high energy cosmic rays after ten years of operation of the Pierre Auger ObservatoryMarko Zavrtanik
, Danilo Zavrtanik
, Lili Yang
, Serguei Vorobiov
, Darko Veberič
, Marta Trini
, Samo Stanič
, Ahmed Saleh
, Gašper Kukec Mezek
, Andrej Filipčič
, Inés Valiño
, 2015, published scientific conference contribution
Abstract: The flux of ultra-high energy cosmic rays has been measured
with unprecedented precision at the Pierre Auger Observatory.
We report an update of the all-sky flux of cosmic rays above 3 x 10 [sup] 17 eV obtained by combining four
independent data sets. These measurements are based on data
from the surface detector arrays (divided into two sets according to the shower zenith angle), from a nested, denser,
detector array, and hybrid events measured simultaneously with
both the fluorescence detector and the surface detector array.
The spectral features are presented in detail and the
systematic uncertainties are addressed. The huge amount of data
collected to date, with a total exposure exceeding
50,000 km2 sr yr, together with the wide range of sky observed
(in declination from -90[deg] to 45[deg]) also allow us to
measure the energy spectrum from different regions of the sky.
We present the results of the search for a dependence of the
measured flux on the declination of the incoming directions.
Found in: osebi
Keywords: ultra-high energy cosmic rays
Pierre Auger Observatory
Published: 02.03.2016; Views: 2660; Downloads: 148
Fulltext (755,08 KB)