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1.
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, 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.
Found in: ključnih besedah
Summary of found: ...ultra-high energy cosmic rays ( UHECR), UHECR mass composition, Pierre Auger Observatory, extensive air showers, Auger Sur...
Keywords: ultra-high energy cosmic rays (UHECR), UHECR mass composition, Pierre Auger Observatory, extensive air showers, Auger Surface Detector signals risetime, azimuthal symmetry
Published: 15.04.2016; Views: 2406; Downloads: 0
.pdf Fulltext (698,19 KB)

2.
Measurement of the mass composition of ultra-high energy cosmic rays with 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, Mariangela Settimo, 2016, published scientific conference contribution

Found in: ključnih besedah
Summary of found: ...ultra-high energy cosmic rays ( UHECR), Pierre Auger Observatory, UHECR mass composition...
Keywords: ultra-high energy cosmic rays (UHECR), Pierre Auger Observatory, UHECR mass composition
Published: 09.11.2016; Views: 2089; Downloads: 155
.pdf Fulltext (1,24 MB)

3.
Report of the Working Group on the Composition of Ultra High Energy Cosmic Rays
Marko Zavrtanik, Danilo Zavrtanik, Serguei Vorobiov, Samo Stanič, Ahmed Saleh, Andrej Filipčič, R. Abbasi, 2016, published scientific conference contribution

Found in: ključnih besedah
Summary of found: ...ultra-high energy cosmic rays ( UHECR), UHECR mass composition, Pierre Auger Observatory, Telescope Array, cross-calibrati...
Keywords: ultra-high energy cosmic rays (UHECR), UHECR mass composition, Pierre Auger Observatory, Telescope Array, cross-calibration studies
Published: 17.11.2016; Views: 2101; Downloads: 0
.pdf Fulltext (448,71 KB)

4.
Evidence for a mixed mass composition at the ‘ankle’ in the cosmic-ray spectrum
Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Darko Veberič, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, A. Aab, 2016, original scientific article

Found in: ključnih besedah
Summary of found: ...ultra-high energy cosmic rays ( UHECR), UHECR mass composition, UHECR energy spectrum, Pierre Auger Observatory, compositi...
Keywords: ultra-high energy cosmic rays (UHECR), UHECR mass composition, UHECR energy spectrum, Pierre Auger Observatory, composition studies at the ‘ankle’ region in the UHECR spectrum
Published: 25.11.2016; Views: 2135; Downloads: 111
.pdf Fulltext (1,73 MB)

5.
Auger Highlights
Marko Zavrtanik, Danilo Zavrtanik, Darko Veberič, Samo Stanič, Andrej Filipčič, Antonella Castellina, Gašper Kukec Mezek, Ahmed Saleh, Marta Trini, Serguei Vorobiov, Lili Yang, 2014, published scientific conference contribution

Found in: ključnih besedah
Summary of found: ...Pierre Auger Observatory, ultra high energy cosmic rays ( UHECR), UHECR hybrid detection technique, UHECR energy spectrum, UHECR mass... ...hybrid detection technique, UHECR energy spectrum, UHECR mass composition, UHECR arrival directions...
Keywords: Pierre Auger Observatory, ultra high energy cosmic rays (UHECR), UHECR hybrid detection technique, UHECR energy spectrum, UHECR mass composition, UHECR arrival directions
Published: 20.06.2017; Views: 1787; Downloads: 253
.pdf Fulltext (861,47 KB)

6.
Astroparticles at the High Energy Frontier: Results from the Pierre Auger Observatory
Marko Zavrtanik, Danilo Zavrtanik, Serguei Vorobiov, Darko Veberič, Samo Stanič, Ahmed Saleh, Andrej Filipčič, Gonzalo Parente, 2014, published scientific conference contribution

Found in: ključnih besedah
Summary of found: ...Pierre Auger Observatory, ultra-high energy cosmic rays ( UHECR), UHECR energy spectrum, mass composition, anisotropies...
Keywords: Pierre Auger Observatory, ultra-high energy cosmic rays (UHECR), UHECR energy spectrum, mass composition, anisotropies
Published: 20.06.2017; Views: 1716; Downloads: 0
.pdf Fulltext (1,06 MB)

7.
Results from the Pierre Auger Observatory
Marko Zavrtanik, Danilo Zavrtanik, Darko Veberič, Samo Stanič, Andrej Filipčič, Ivan De Mitri, 2015, published scientific conference contribution

Found in: ključnih besedah
Summary of found: ...Pierre Auger Observatory, Ultra High Energy Cosmic Rays ( UHECR), UHECR energy spectrum, UHECR mass composition...
Keywords: Pierre Auger Observatory, Ultra High Energy Cosmic Rays (UHECR), UHECR energy spectrum, UHECR mass composition
Published: 27.06.2017; Views: 1544; Downloads: 0
.pdf Fulltext (475,69 KB)

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