1. Measurements of Xmax above 10[sup]17 eV with the fluorescence detector 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, Alessio Porcelli, 2015, published scientific conference contribution Abstract: For the first time the Pierre Auger Collaboration
presents〈Xmax〉and σ(Xmax) measurements covering nearly three decades of energy. In this analysis we include
new Xmax data obtained with the High Elevation Auger
Telescopes (HEAT) enhancement. The HEAT telescopes cover
a field of view ranging from 30◦ to 60◦ of elevation and are
located next to one of the standard fluorescence detector sites
(Coihueco). The combination of the HEAT and Coihueco telescopes
covers a field of view from ∼2◦ up to ∼60◦ of elevation. Thus,
the combination can sample the longitudinal profile of nearby
lower energy showers, allowing us to extend the energy range
down to 10[sup]17 eV.
Found in: ključnih besedah
Summary of found: ...extensive atmospheric showers,
longitudinal shower profile,
depth of the shower maximum,
Pierre Auger Observatory...
Keywords: extensive atmospheric showers, longitudinal shower profile, depth of the shower maximum, Pierre Auger Observatory
Published: 03.03.2016; Views: 2037; Downloads: 136
 Fulltext (718,30 KB) |
2. Composition at the “ankle” measured by the Pierre Auger Observatory: pure or mixed?Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Darko Veberič, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, Alexey Yushkov, 2015, published scientific conference contribution Abstract: 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.
Found in: ključnih besedah
Summary of found: ...the measurement of the
correlation between the depth of shower maximum and the signal
in...
Keywords: ultra-high energy cosmic rays, elemental composition, depth of shower maximum, secondary cosmic rays, Pierre Auger Observatory
Published: 02.03.2016; Views: 1652; Downloads: 140
Fulltext (388,00 KB) |
3. Report of the Working Group on the Composition of Ultra-High Energy Cosmic RaysMarko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Darko Veberič, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, Michael Unger, 2015, published scientific conference contribution Abstract: The atmospheric depth, Xmax, at which the particle number of
an air shower reaches its maximum is a good indicator for the
mass of the primary particle. We present a comparison of the
energy evolution of the mean of Xmax as measured by the
Telescope Array and c Collaborations. After
accounting for the different resolutions, acceptances and
analysis strategies of the two experiments, the two results are
found to be in good agreement within systematic uncertainties.
Found in: ključnih besedah
Summary of found: ...The atmospheric depth, Xmax, at which the particle number of... ...which the particle number of
an air shower reaches its maximum is a good indicator...
Keywords: Pierre Auger Observatory, Telescope Array, Ultra-High Energy Cosmic Rays, elemental composition, extensive air showers, the atmospheric depth of the air shower maximum
Published: 08.03.2016; Views: 1712; Downloads: 143
Fulltext (329,86 KB) |
4. Measurement of the energy spectrum of cosmic rays with the Pierre Auger ObservatoryVitor de Souza, Andrej Filipčič, Ahmed Saleh, Samo Stanič, Darko Veberič, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, 2016, published scientific conference contribution Found in: ključnih besedah
Summary of found: ...e Auger Observatory,
extensive air showers (EAS),
EAS longitudinal profiles,
depth of shower maximum...
Keywords: Ultra-high energy cosmic rays (UHECR), UHECR elemental composition, Pierre Auger Observatory, extensive air showers (EAS), EAS longitudinal profiles, depth of shower maximum
Published: 09.11.2016; Views: 1537; Downloads: 0
Fulltext (2,50 MB) |
5. Depth of maximum of air-shower profiles at the Pierre Auger Observatory: Measurements above 10^17.2 eV and Composition ImplicationsMarko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, Jose Bellido, 2017, published scientific conference contribution Found in: ključnih besedah
Keywords: Pierre Auger Observatory, depth of maximum of air-shower, mass composition
Published: 16.02.2018; Views: 651; Downloads: 62
Fulltext (1,19 MB) |
