101. Report from the Multi-Messenger Working Group at UHECR-2014 ConferenceTimo Karg, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2016, published scientific conference contribution Keywords: ultra-high energy cosmic rays (UHECR), UHECR interaction products, multi-messenger studies, neutron, neutrino, photon, IceCube neutrino observatory, Pierre Auger Observatory, Telescope Array Published in RUNG: 17.11.2016; Views: 4470; Downloads: 0 This document has many files! More... |
102. Measurement of the mass composition of ultra-high energy cosmic rays with the Pierre Auger ObservatoryMariangela Settimo, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Darko Veberič, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2016, published scientific conference contribution Keywords: ultra-high energy cosmic rays (UHECR), Pierre Auger Observatory, UHECR mass composition Published in RUNG: 09.11.2016; Views: 4516; Downloads: 236 Full text (1,24 MB) |
103. The Auger Engineering Radio Array and multi-hybrid cosmic ray detectionE. M. Holt, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Darko Veberič, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2016, published scientific conference contribution Keywords: cosmic rays (CR), extensive air showers, EAS radio emission, Pierre Auger Observatory, Auger Engineering Radio Array, multi-hybrid CR detection Published in RUNG: 09.11.2016; Views: 4415; Downloads: 266 Full text (1,98 MB) |
104. Highlights from the Pierre Auger ObservatoryStephane Coutu, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Darko Veberič, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2016, published scientific conference contribution Keywords: ultra-high energy cosmic rays (UHECR), Pierre Auger Observatory Published in RUNG: 09.11.2016; Views: 4205; Downloads: 0 This document has many files! More... |
105. Radio detection of high-energy cosmic rays with the Auger Engineering Radio ArrayFrank G. Schröder, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Darko Veberič, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2016, published scientific conference contribution Keywords: high-energy cosmic rays, extensive air showers (EAS), EAS radio emission, Pierre Auger Observatory, Auger Engineering Radio Array Published in RUNG: 09.11.2016; Views: 4447; Downloads: 0 This document has many files! More... |
106. Measurement of the Radiation Energy in the Radio Signal of Extensive Air Shower as a Universal Estimator of Cosmic-Ray EnergyA. Aab, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2016, original scientific article Keywords: energija sevanja, radio signal, univerzalni estimator energije kozmičnih žarkov Published in RUNG: 15.06.2016; Views: 3794; Downloads: 1 This document has many files! More... |
107. Energy estimation of cosmic rays with the Engineering Radio Array of the Pierre Auger ObservatoryA. Aab, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Serguei Vorobiov, Lili Yang, Marko Zavrtanik, Danilo Zavrtanik, 2016, original scientific article Keywords: mreža radio detektorjev, izsevana energija, Observatorij P. Auger Published in RUNG: 15.06.2016; Views: 3884; Downloads: 0 This document has many files! More... |
108. Azimuthal asymmetry in the risetime of the surface detector signals of the Pierre Auger ObservatoryA. Aab, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Darko Veberič, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2016, original scientific article Abstract: The azimuthal asymmetry in the risetime of signals in Auger surface detector stations is a source of information on shower development. The azimuthal asymmetry is due to a combination of the longitudinal evolution of the shower and geometrical effects related to the angles of incidence of the particles into the detectors. The magnitude of the effect depends upon the zenith angle and state of development of the shower and thus provides a novel observable, (secθ)max, sensitive to the mass composition of cosmic rays above 3×1018 eV. By comparing measurements with predictions from shower simulations, we find for both of our adopted models of hadronic physics (QGSJETII-04 and EPOS-LHC) an indication that the mean cosmic-ray mass increases slowly with energy, as has been inferred from other studies. However, the mass estimates are dependent on the shower model and on the range of distance from the shower core selected. Thus the method has uncovered further deficiencies in our understanding of shower modeling that must be resolved before the mass composition can be inferred from (secθ)max. Keywords: ultra-high energy cosmic rays (UHECR), UHECR mass composition, Pierre Auger Observatory, extensive air showers, Auger Surface Detector signals risetime, azimuthal symmetry Published in RUNG: 15.04.2016; Views: 5464; Downloads: 0 This document has many files! More... |
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110. Initial results of a direct comparison between the Surface Detectors of the Pierre Auger Observatory and the Telescope ArrayR. Takeishi, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Darko Veberič, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2015, published scientific conference contribution Abstract: The Pierre Auger Observatory (Auger) in Mendoza, Argentina and
the Telescope Array (TA) in Utah, USA aim at unraveling the
origin and nature of Ultra-High Energy Cosmic Rays (UHECR).
At present, there appear to be subtle differences between Auger
and TA results and interpretations. Joint working groups have
been established and have already reported preliminary
findings. From an experimental standpoint, the Surface
Detectors (SD) of both experiments make use of different
detection processes not equally sensitive to the components of
the extensive air showers making it to the ground. In particular, the muonic component of the shower measured at
ground level can be traced back to the primary composition,
which is critical for understanding the origin of UHECRs.
In order to make direct comparisons between the SD detection
techniques used by Auger and TA, a joint SD experimental
research program is being developed. In the first phase,
two Auger SD stations were deployed at the TA Central Laser
Facility to compare station-level responses. This paper
concentrates on the results obtained with the first Auger SD
station (an “Auger North” design), which has been operating
since October 2014. The second Auger SD station, identical to
the ones being operated at Auger in Argentina (an “Auger South”
design), was just deployed in June 2015. The second phase of
this research program will be to co-locate six Auger North SD
stations with TA stations in the field to compare event-level
responses. Keywords: Ultra-High Energy Cosmic Rays, Pierre Auger Observatory, Telescope Array, extensive air showers, secondary cosmic rays, muonic shower component, surface detectors Published in RUNG: 08.03.2016; Views: 4758; Downloads: 188 Full text (1,42 MB) |