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11.
Initial results of a direct comparison between the Surface Detectors of the Pierre Auger Observatory and the Telescope Array
Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Darko Veberič, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, R. Takeishi, 2015, objavljeni znanstveni prispevek na konferenci

Opis: 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.
Najdeno v: ključnih besedah
Povzetek najdenega: ...the origin and nature of Ultra-High Energy Cosmic Rays (UHECR). At present, there appear to be...
Ključne besede: Ultra-High Energy Cosmic Rays, Pierre Auger Observatory, Telescope Array, extensive air showers, secondary cosmic rays, muonic shower component, surface detectors
Objavljeno: 08.03.2016; Ogledov: 1540; Prenosov: 94
.pdf Polno besedilo (1,42 MB)

12.
Azimuthal asymmetry in the risetime of the surface detector signals of the Pierre Auger Observatory
Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Darko Veberič, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, A. Aab, 2016, izvirni znanstveni članek

Opis: 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.
Najdeno v: ključnih besedah
Povzetek najdenega: ...(secθ)max, sensitive to the mass composition of cosmic rays above 3×1018  eV. By comparing measurements with...
Ključne besede: ultra-high energy cosmic rays (UHECR), UHECR mass composition, Pierre Auger Observatory, extensive air showers, Auger Surface Detector signals risetime, azimuthal symmetry
Objavljeno: 15.04.2016; Ogledov: 1999; Prenosov: 0
.pdf Polno besedilo (698,19 KB)

13.
Ultra high energy neutrinos
Lili Yang, Cecilia Lunardini, Eray Sabancilar, 2013, izvirni znanstveni članek

Najdeno v: ključnih besedah
Povzetek najdenega: ...ultra high energy, cosmic rays, cosmological neutrinos, cosmic ray theory, ...
Ključne besede: ultra high energy, cosmic rays, cosmological neutrinos, cosmic ray theory
Objavljeno: 09.05.2017; Ogledov: 1026; Prenosov: 6
URL Polno besedilo (0,00 KB)

14.
Towards a Joint Analysis of Data from the IceCube Neutrino Telescope, the Pierre Auger Observatory and Telescope Array
Marko Zavrtanik, Danilo Zavrtanik, Serguei Vorobiov, Darko Veberič, Samo Stanič, Ahmed Saleh, Andrej Filipčič, A. Christov, 2016, objavljeni znanstveni prispevek na konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...ultra-high energy cosmic rays (UHECR), Pierre Auger Observatory, Telescope Array, very-high energy...
Ključne besede: ultra-high energy cosmic rays (UHECR), Pierre Auger Observatory, Telescope Array, very-high energy (VHE) neutrinos, IceCube Neutrino Telescope, joint data analysis
Objavljeno: 08.11.2016; Ogledov: 1644; Prenosov: 0
.pdf Polno besedilo (455,27 KB)

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Muons in Air Showers at the Pierre Auger Observatory
Michael Unger, Andrej Filipčič, Ahmed Saleh, Samo Stanič, Darko Veberič, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, 2016, objavljeni znanstveni prispevek na konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...ultra-high energy cosmic rays (UHECR), extensive air showers (EAS), Pierre Auger Observatory, EAS...
Ključne besede: ultra-high energy cosmic rays (UHECR), extensive air showers (EAS), Pierre Auger Observatory, EAS muon content
Objavljeno: 09.11.2016; Ogledov: 1500; Prenosov: 0
.pdf Polno besedilo (519,98 KB)

17.
Highlights from the Pierre Auger Observatory
Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Darko Veberič, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, Stephane Coutu, 2016, objavljeni znanstveni prispevek na konferenci

Najdeno v: ključnih besedah
Povzetek najdenega: ...ultra-high energy cosmic rays (UHECR), Pierre Auger Observatory...
Ključne besede: ultra-high energy cosmic rays (UHECR), Pierre Auger Observatory
Objavljeno: 09.11.2016; Ogledov: 1386; Prenosov: 0
.pdf Polno besedilo (2,59 MB)

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