Recent results from the Pierre Auger Observatory about the energy spectrum, mass composition, and arrival directions of ultra-high energy cosmic rays are reported. The ankle at 4 x 10^18 eV and a suppression above 3 x 10^19 eV consistent with the GZK effect is observed. At energies above 5.5 x 10^19 eV a directional correlation of cosmic rays with the positions of nearby extragalactic objects is found, including an excess of events around the direction of Centaurus A, the nearest radio loud active galaxy.
B.04 Guest lecture
COBISS.SI-ID: 1777659While 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: 1206523Biological and non-biological aerosols can be simultaneously detected, tracked and identified by a scanning mobile lidar. The system developed at the University of Nova Gorica can perform azimuth and elevation angle scans with angular resolution of 0.1 in both day and night-time conditions. An important benchmark of the system are the measurements performed after a major eruption of the Icelandic Eyjafjallajoekull volcano on 14 April 2010.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 1648123Recent results from the Pierre Auger Observatory about the energy spectrum, mass composition, and arrival directions of ultra-high energy cosmic rays were presented. We also presented the next generation of detectors devoted to the exploration of the highest energy ranges, which is likely to dramatically increase our knowledge about UHECRs in the near future.
B.04 Guest lecture
COBISS.SI-ID: 1484283In 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 field. In principle it is concluded that cosmic ray astronomy is possible for cosmic protons with energies of 10 EeV and above.
D.09 Tutoring for postgraduate students
COBISS.SI-ID: 1327099