J Pallotta

Proton-air interaction properties at $\sqrt{s} \simeq 100$ TeV from shower-depth measurements with the Pierre Auger Observatory and their connection to the Muon Puzzle

T K ND TPC collaboration, A. Abdul Halim, P. Abreu, M. Aglietta et autres

Hybrid measurements at the Pierre Auger Observatory indicate that most high-energy hadronic interaction models underestimate the average depth of the shower maximum, $\langle X_{\max} \rangle$, at a center-of-mass energy of $\sqrt{s}=97.7 \pm 0.4^{+6.6}_{-6.2}\,\mathrm{TeV}$. In this Letter, the hadronic interaction models are shown …

Search for a diffuse flux of photons with energies above tens of PeV at the Pierre Auger Observatory

T K ND TPC collaboration, A. Abdul Halim, P. Abreu, M. Aglietta et autres

Diffuse photons of energy above 0.1 PeV, produced through the interactions between cosmic rays and either interstellar matter or background radiation fields, are powerful tracers of the distribution of cosmic rays in the Galaxy. Furthermore, the measurement of a diffuse photon flux …

fr (code pays fourni par la source)

Energy Spectrum of Ultrahigh-Energy Cosmic Rays across Declinations − 90 ° to + 44.8 ° as Measured at the Pierre Auger Observatory

A. Abdul Halim, P. Abreu, M. Aglietta, I. Allekotte et autres

The energy spectrum of cosmic rays above 2.5 EeV has been measured across the declination range $-90^\circ \leqδ\leq +44.8^\circ$ using data from $\sim 310{,}000$ events accrued at the Pierre Auger Observatory from an exposure of $(104{,}900\pm 3{,}100)$ km$^2\,$sr$\,$yr. No significant variations of …

fr (code pays fourni par la source)

Cosmological implications of photon-flux upper limits at ultrahigh energies in scenarios of Planckian-interacting massive particles for dark matter

Pedro Abreu, Marco Aglietta, Gioacchino Alex Anastasi, Luis Miguel Domingues Mendes et autres

Testing effects of Lorentz invariance violation in the propagation of astroparticles with the Pierre Auger Observatory

T K ND TPC collaboration, P. Abreu, M. Aglietta, J M Albury et autres

Lorentz invariance violation (LIV) is often described by dispersion relations of the form $E_i^2=m_i^2+p_i^2+δ_{i,n} E^{2+n}$ with delta different based on particle type $i$, with energy $E$, momentum $p$ and rest mass $m$. Kinematics and energy thresholds of interactions are modified once the …

fr (code pays fourni par la source)

Calibration of the underground muon detector of the Pierre Auger Observatory

T K ND TPC collaboration, A. Aab, P. Abreu, M. Aglietta et autres

To obtain direct measurements of the muon content of extensive air showers with energy above $10^{16.5}$ eV, the Pierre Auger Observatory is currently being equipped with an underground muon detector (UMD), consisting of 219 10 $\mathrm{m^2}$-modules, each segmented into 64 scintillators coupled …

nl, pt, it, au, ar, es, us, de, mx, ro, cz, pe, fr, br, pl, be (code pays fourni par la source)

Reconstruction of Events Recorded with the Surface Detector of the Pierre Auger Observatory

T K ND TPC collaboration, A. Aab, P. Abreu, M. Aglietta et autres

Cosmic rays arriving at Earth collide with the upper parts of the atmosphere, thereby inducing extensive air showers. When secondary particles from the cascade arrive at the ground, they are measured by surface detector arrays. We describe the methods applied to the …

nl, pt, it, au, ar, mx, es, us, de, ro, cz, fr, br, pl, be (code pays fourni par la source)

A Search for Ultra-high-energy Neutrinos from TXS 0506+056 Using the Pierre Auger Observatory

Alexander Aab, Pedro Abreu, Belén Andrada, Martin Erdmann et autres

The IceCube Neutrino Observatory, the Pierre Auger Observatory and the Telescope Array: Joint Contribution to the 34th International Cosmic Ray Conference (ICRC 2015)

IceCube Collaboration, M. G. Aartsen, K. Abraham, M. Ackermann et autres

We have conducted three searches for correlations between ultra-high energy cosmic rays detected by the Telescope Array and the Pierre Auger Observatory, and high-energy neutrino candidate events from IceCube. Two cross-correlation analyses with UHECRs are done: one with 39 cascades from the …

Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory

A. Aab, P. Abreu, M. Aglietta, E.J. Ahn et autres

Energy-dependent patterns in the arrival directions of cosmic rays are searched for using data of the Pierre Auger Observatory. We investigate local regions around the highest-energy cosmic rays with E > = 6×1019 eV by analyzing cosmic rays with energies above E …

The Pierre Auger Observatory:Contributions to the 33rd International Cosmic Ray Conference (ICRC 2013)

[No Value] The Pierre Auger Collaboration, A. Aab, Pedro Abreu, Marco Aglietta et autres

Pierre Auger Observatory and Telescope Array: Joint Contributions to the 33rd International Cosmic Ray Conference (ICRC 2013)

The Telescope Array Collaboration, Diego Torres Machado, G. C. Hill, P. Necesal et autres

Joint contributions of the Pierre Auger and Telescope Array Collaborations to the 33rd International Cosmic Ray Conference, Rio de Janeiro, Brazil, July 2013: cross-calibration of the fluorescence telescopes, large scale anisotropies and mass composition.