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1.
The H.E.S.S. measurement of the cosmic-ray electron spectrum
Serguei Vorobiov, Kathrin Egberts, 2010, published scientific conference contribution abstract

Found in: ključnih besedah
Summary of found: ...telescopes, H.E.S.S. system, Cherenkov telescopes, very high energy, cosmic-ray electrons, energy spectrum, ...
Keywords: ground based y-ray telescopes, H.E.S.S. system, Cherenkov telescopes, very high energy, cosmic-ray electrons, energy spectrum
Published: 25.04.2014; Views: 2074; Downloads: 14
URL Fulltext (0,00 KB)

2.
The flux of ultra-high energy cosmic rays after ten years of operation 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, Inés Valiño, 2015, published scientific conference contribution

Abstract: The flux of ultra-high energy cosmic rays has been measured with unprecedented precision at the Pierre Auger Observatory. We report an update of the all-sky flux of cosmic rays above 3 x 10 [sup] 17 eV obtained by combining four independent data sets. These measurements are based on data from the surface detector arrays (divided into two sets according to the shower zenith angle), from a nested, denser, detector array, and hybrid events measured simultaneously with both the fluorescence detector and the surface detector array. The spectral features are presented in detail and the systematic uncertainties are addressed. The huge amount of data collected to date, with a total exposure exceeding 50,000 km2 sr yr, together with the wide range of sky observed (in declination from -90[deg] to 45[deg]) also allow us to measure the energy spectrum from different regions of the sky. We present the results of the search for a dependence of the measured flux on the declination of the incoming directions.
Found in: ključnih besedah
Summary of found: ...45[deg]) also allow us to measure the energy spectrum from different regions of the sky. We present...
Keywords: ultra-high energy cosmic rays energy spectrum Pierre Auger Observatory
Published: 02.03.2016; Views: 2665; Downloads: 148
.pdf Fulltext (755,08 KB)

3.
Combined fit of spectrum and composition data as measured by 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, Andrea Di Matteo, 2015, published scientific conference contribution

Abstract: We present a combined fit of both flux and composition of ultra-high energy cosmic rays as measured by the Pierre Auger Observatory. The fit has been performed for energies above 5 × 10[sup]18 eV, i.e. the region of the all-particle spectrum above the so-called “ankle” feature. A simple astrophysical model consisting of identical sources has been adopted, where nuclei are injected with a rigidity dependent mechanism and the sources are uniformly distributed in a comoving volume. The fit results suggest a source model characterized by relatively low maximum injection energies and hard spectral indices. The impact of different sources of systematic uncertainties in the above result is discussed.
Found in: ključnih besedah
Summary of found: ...of both flux and composition of ultra-high energy cosmic rays as measured by the Pierre...
Keywords: Pierre Auger Observatory, ultra-high energy cosmic rays, energy spectrum, elemental composition, combined data fit
Published: 03.03.2016; Views: 1865; Downloads: 158
.pdf Fulltext (704,98 KB)

4.
Large-Scale Distribution of Arrival Directions of Cosmic Rays Detected at the Pierre Auger Observatory and the Telescope Array above 10[sup]19 eV
Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Darko Veberič, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, Olivier Deligny, 2015, published scientific conference contribution

Abstract: The large-scale distribution of arrival directions of high-energy cosmic rays is a key observable in attempts to understanding their origin. The dipole and quadrupole moments are of special interest in revealing potential anisotropies. An unambiguous measurement of these moments as well as of the full set of spherical harmonic coefficients requires full-sky coverage. This can be achieved by combining data from observatories located in both the northern and southern hemispheres. To this end, a joint analysis using data recorded at the Pierre Auger Observatory and the Telescope Array above 10[sup]19 eV has been performed. Thanks to the full-sky coverage, the measurement of the dipole moment reported in this study does not rely on any assumption on the underlying flux of cosmic rays. As well, the resolution on the quadrupole and higher order moments is the best ever obtained. The resulting multipolar expansion of the flux of cosmic rays allows a series of anisotropy searches to be performed, and in particular to report on the first angular power spectrum of cosmic rays. This allows a comprehensive description of the angular distribution of cosmic rays above 10[sup]19 eV.
Found in: ključnih besedah
Summary of found: ...The large-scale distribution of arrival directions of high- energy cosmic rays is a key observable in... ... the first angular power spectrum of cosmic rays. This allows a...
Keywords: Pierre Auger Observatory, Telescope Array, high-energy cosmic rays, large-scale anisotropies, angular power spectrum
Published: 08.03.2016; Views: 1898; Downloads: 118
.pdf Fulltext (462,61 KB)

5.
6.
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...
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: 2148; Downloads: 111
.pdf Fulltext (1,73 MB)

7.
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... ...cosmic rays (UHECR), UHECR 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: 1796; Downloads: 253
.pdf Fulltext (861,47 KB)

8.
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: ...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: 1731; Downloads: 0
.pdf Fulltext (1,06 MB)

9.
Multi-resolution anisotropy studies of ultrahigh-energy cosmic rays detected at 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, 2017, original scientific article

Found in: ključnih besedah
Summary of found: ...ry, ultra-high energy cosmic rays (UHECR), UHECR anisotropies, angular power spectrum, needlet wavelet analysis...
Keywords: Pierre Auger Observatory, ultra-high energy cosmic rays (UHECR), UHECR anisotropies, angular power spectrum, needlet wavelet analysis
Published: 23.06.2017; Views: 1579; Downloads: 0
.pdf Fulltext (1,12 MB)

10.
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...
Keywords: Pierre Auger Observatory, Ultra High Energy Cosmic Rays (UHECR), UHECR energy spectrum, UHECR mass composition
Published: 27.06.2017; Views: 1551; Downloads: 0
.pdf Fulltext (475,69 KB)

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