In this work the prospects of cosmic ray astronomy in general and possibilities for particles originating from the galactic center and active galactic nuclei are investigated numerically by integrating trajectories of incoming cosmic rays backwards in time, in different models of the galactic magnetic ?eld. In principle it is concluded that cosmic ray astronomy is possible for cosmic protons with energies of 10 EeV and above.
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COBISS.SI-ID: 1327099While the most likely candidates for cosmic rays above 10^18 eV are protons and nuclei, many of the scenarios of cosmic ray origin predict in addition a photon component. Detection of this component is not only of importance for cosmic-ray physics but would also open a new research window with impact on astrophysics, cosmology, particle and fundamental physics.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 1206523We discuss techniques which have been developed for determining the intrinsic anisotropy of sparse ultra-high-energy cosmic ray datasets, including a two point, an improved two point and a three point method. Monte-Carlo studies of the sensitivities of these tests are presented. We perform a scan in energy above the 100 highest energy events (corresponding to ?43 EeV) detected at the Pierre Auger Observatory and ?nd that the largest deviation from isotropic expectations occurs for events above 52 EeV.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 1204219Air masses carry various types and concentrations the aerosols, which can be monitored using lidar. Relating these measurements to the transport paths the air masses can help determine their origin and can serve as a cross-check for meteorological models. A study using January 2005 - September 2006 Mie scattering lidar data from Otlica observatory, Slovenia (43.93N, 13.20E, 945 m a.s.l.) was performed.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 1094651Optical properties of the atmospheric boundary layer (ABL) above the land-sea transition interface were measured using a scanning Mie lidar located 30 km away from the Adriatic coast. Based on the 2-dimensional range-height indicator scans, detailed information on the ABL was obtained, including parameters such as atmospheric optical depth, aerosol extinction coef?cient and the height of the ABL. The presented case study indicates that the height of the ABL in the land-sea transition zone and the adjacent mountainous region was changing rapidly due to highly variable atmospheric conditions.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 1178107