pure or mixed?
Alexey Yushkov (Avtor),
Andrej Filipčič (Avtor),
Gašper Kukec Mezek (Avtor),
A. Saleh (Avtor),
Samo Stanič (Avtor),
M. Trini (Avtor),
Darko Veberič (Avtor),
Serguei Vorobiov (Avtor),
Lili Yang (Avtor),
Danilo Zavrtanik (Avtor),
Marko Zavrtanik (Avtor)
Povzetek
We report for the first time on the measurement of the
correlation between the depth of shower maximum and the signal
in water-Cherenkov stations for events reconstructed by both
the fluorescence and the surface detectors of the Pierre Auger Observatory. Such a correlated measurement is a unique feature
of a hybrid air-shower observatory and allows us to determine
the purity of the cosmic-ray composition. The observed
correlation in the energy range around the “ankle”
lg(E/eV) = 18.5−19.0 differs significantly from the expectations for pure beams, indicating that the primary composition in this range is mixed, unless the
hadronic interactions at these energies behave very
differently than in conventional, LHC-tuned event generators.
Ključne besede
ultra-high energy;cosmic rays;elemental composition;depth of shower maximum;secondary cosmic rays;Pierre Auger Observatory;magnetic deflection patterns;
Podatki
Jezik: |
Angleški jezik |
Leto izida: |
2015 |
Tipologija: |
1.08 - Objavljeni znanstveni prispevek na konferenci |
Organizacija: |
UNG - Univerza v Novi Gorici |
UDK: |
539.1 |
COBISS: |
4151035
|
ISSN: |
1824-8039 |
Št. ogledov: |
4516 |
Št. prenosov: |
234 |
Ocena: |
0 (0 glasov) |
Metapodatki: |
|
Ostali podatki
URN: |
URN:SI:UNG |
Vrsta dela (COBISS): |
Delo ni kategorizirano |
Strani: |
7 str. |
Čas izdaje: |
2015 |
ID: |
9128058 |