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1.
Report from the Multi-Messenger Working Group at UHECR-2014 Conference
Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Marta Trini, Samo Stanič, Ahmed Saleh, Gašper Kukec Mezek, Andrej Filipčič, Timo Karg, 2016, published scientific conference contribution

Found in: ključnih besedah
Summary of found: ...CR), UHECR interaction products, multi-messenger studies, neutron, neutrino, photon, IceCube neutrino observatory, Pierre Auger Observatory, Telescope Array...
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: 17.11.2016; Views: 2039; Downloads: 0
.pdf Fulltext (6,04 MB)

2.
Search for photons with energies above 10^18 eV using the hybrid detector 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, 2017, original scientific article

Found in: ključnih besedah
Summary of found: ...rays, cosmic ray experiments, Pierre Auger Observatory, UHE photon search...
Keywords: ultra high energy (UHE) cosmic rays, cosmic ray experiments, Pierre Auger Observatory, UHE photon search
Published: 13.04.2017; Views: 1644; Downloads: 0
.pdf Fulltext (775,01 KB)

3.
Search for Physics beyond the Standard Model with the CRESST Experiment
2017, master's thesis

Abstract: In spite of the successes of observational astro- and particle physics and cosmology very much of the universe remains unknown. The Standard Model of particle physics is a theory describing the electromagnetic, weak, and strong nuclear interactions, as well as classifying all the subatomic particles known. But there is overwhelming evidence, that all the known particles, the ordinary (baryonic) matter, the building blocks of planets, stars and ourselves, only make up about 4.9% of the energy content of the universe. The standard model of cosmology (CDM) indicates that the total mass-energy of the universe contains beside the 4.9% ordinary matter two other components: 26.8% dark matter and 68.3% dark energy. The accelerating expansion of the Universe is the result of the effect of the dark energy with its most simple form given by a cosmological constant in Einstein's Equation. Dark matter is an unidentified type of matter that is not accounted for by dark energy and neutrinos and is generally believed to be a non-relativistic, charge neutral and non-baryonic new form of matter. Although dark matter has not been directly observed yet, its existence and properties are inferred from its gravitational effects such as the motions of visible matter, gravitational lensing, its influence on the universe's large-scale structure, and its effects in the cosmic microwave background. Thus the search for Dark Matter is the search for physics beyond the standard model. Although the nature of dark matter is yet unknown, its presence is crucial to understanding the future of the universe. The CRESST experiment is searching for direct evidence in the form of a nuclear recoil induced on a scintillating CaWO4 crystal by a dark matter particle, and is installed and taking data underground at Laboratory Nazionali del Gran Sasso (LNGS) in Italy. While both, dark energy and dark matter, have not been detected directly, a class of dark matter particles that interact only via gravity and the weak force, referred to asWeakly Interacting Massive Particles (WIMPs), has been established as the leading candidate among the dark matter community. For this thesis a special model of dark matter was studied, namely the dark photon. This thesis provides a detailed description of the calculation of the 90% upper limit on the dark photon kinetic mixing based on data from the second phase of the CRESST experiment. The analysis was carried out in a frequentist approach based on the (unbinned) maximum-likelihood method and likelihood ratios. To make a statement about the calculated result and its quality, the used algorithm had to be tested, what was done with Monte Carlo simulations (pseudo data).
Found in: ključnih besedah
Summary of found: ...dark matter was studied, namely the dark photon. This thesis provides a detailed description of...
Keywords: astro physics, particle physics, cosmology, universe, Standard Model of particle physics, standard model of cosmology, matter, ordinary matter, dark matter, dark energy, accelerating expansion of the Universe, non-baryonic, new form of matter, gravitational lensing, cosmic microwave background, search for physics beyond the standard model, CRESST experiment, direct detection, CaWO4 crystal, underground laboratory, Laboratory Nazionali del Gran Sasso, Weakly Interacting Massive Particles, WIMP, dark photon, 90% upper limit, upper limit, kinetic mixing, frequentist approach, unbinned, maximum likelihood
Published: 13.10.2017; Views: 1653; Downloads: 0
.pdf Fulltext (10,71 MB)

4.
Test results of a prototype device to calibrate the Large Size Telescope camera proposed for the Cherenkov Telescope Array
Marko Zavrtanik, Danilo Zavrtanik, Gabrijela Zaharijas, Lili Yang, Serguei Vorobiov, Samo Stanič, Gašper Kukec Mezek, Christopher Eckner, M. Palatiello, 2017, published scientific conference contribution

Found in: ključnih besedah
Summary of found: ...Large Size Telescope camera, CTA, photon density...
Keywords: Large Size Telescope camera, CTA, photon density
Published: 16.02.2018; Views: 880; Downloads: 73
.pdf Fulltext (4,39 MB)

5.
Evaluation and Improvement of Lidar Performance Based on Temporal and Spatial Variance Calculation
Fei Gao, Xinxin Xu, Qingsong Zhu, Li Wang, Tingyao He, Longlong Wang, Samo Stanič, Dengxin Hua, 2019, original scientific article

Found in: ključnih besedah
Summary of found: ...spatial variance, temporal variance, analog data, photon-counting data, dead time,threshold voltage, linear working range,...
Keywords: spatial variance, temporal variance, analog data, photon-counting data, dead time, threshold voltage, linear working range, data gluing
Published: 06.05.2019; Views: 846; Downloads: 0
.pdf Fulltext (5,08 MB)

6.
Limits on ultra-high energy photons with the Pierre Auger Observatory
Lukas Zehrer, Marko Zavrtanik, Danilo Zavrtanik, Lili Yang, Serguei Vorobiov, Marta Trini, Samo Stanič, Gašper Kukec Mezek, Andrej Filipčič, Julian Rautenberg, 2019, published scientific conference contribution

Found in: ključnih besedah
Summary of found: ...(UHE) cosmic rays, Pierre Auger Observatory, UHE photon search, UHE photon limits...
Keywords: ultra-high energy (UHE) cosmic rays, Pierre Auger Observatory, UHE photon search, UHE photon limits
Published: 24.07.2020; Views: 290; Downloads: 13
.pdf Fulltext (1,92 MB)

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