A5023874856- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Radio Astronomy Observations and Technology
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Gamma-ray bursts and supernovae
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Atomic and Subatomic Physics Research
- Radiation Therapy and Dosimetry
- Precipitation Measurement and Analysis
- Astronomical Observations and Instrumentation
- Pulsars and Gravitational Waves Research
- CCD and CMOS Imaging Sensors
- History and Developments in Astronomy
- Ionosphere and magnetosphere dynamics
- Photocathodes and Microchannel Plates
- Radiation Detection and Scintillator Technologies
- Calibration and Measurement Techniques
- Particle Accelerators and Free-Electron Lasers
- Atmospheric chemistry and aerosols
Karlsruhe Institute of Technology
2016-2025
Czech Academy of Sciences, Institute of Physics
2021-2024
Czech Academy of Sciences
2021-2024
Istituto Nazionale di Fisica Nucleare
2024
Consejo Nacional de Investigaciones Científicas y Técnicas
2011-2023
Universidad Nacional de La Plata
2011-2023
University of Buenos Aires
2011-2023
Instituto de Tecnologías en Detección y Astropartículas
2016-2023
National University of General San Martín
2016-2023
National Technological University
2016-2023
We present results from the FUNK experiment in search for hidden-photon dark matter. Near surface of a mirror, hidden photons may be converted into ordinary photons. These are emitted perpendicular to and have an energy equal mass matter photon. Our experimental setup consists large, spherical mirror with area more than 14 m$^2$, which concentrates its central point. Using detector sensitive visible near-UV photons, we can exclude kinetic-mixing coupling stronger $\chi \approx 10^{-12}$...
Calibrating underground detectors necessitates careful consideration of the passage penetrating particles through matter. In muon based on plastic scintillators, like Underground Muon Detector Pierre Auger Observatory, energy deposition within is significantly influenced by generation delta (knock-on) electrons in surrounding ground as muons pass through. this study, we analyzed various impacting a 2.3 m deep detector and assessed its effect reconstruction density extensive air showers...
Abstract. A measuring campaign was performed over the neighboring towns of Nova Gorica in Slovenia and Gorizia Italy on 24 25 May 2010, to investigate concentration distribution urban aerosols. Tracking two-dimensional spatial temporal aerosol distributions using scanning elastic LIDAR, operating at 1064 nm. In addition, PM10 concentrations particles, NOx meteorological data were continuously monitored within LIDAR region. Based we collected, investigated flow dynamics lower troposphere...
We report a measurement of the energy spectrum cosmic rays above $2.5{\times} 10^{18}$ eV based on $215,030$ events. New results are presented: at about $1.3{\times} 10^{19}$ eV, spectral index changes from $2.51 \pm 0.03 \textrm{ (stat.)} 0.05 (sys.)}$ to $3.05 (stat.)}\pm 0.10\textrm{ (sys.)}$, evolving $5.1\pm0.3\textrm{ 0.1\textrm{ beyond $5{\times} while no significant dependence features declination is seen in accessible range. These can be reproduced models with energy-dependent mass...
This short note presents the Lambert W(x) function and its possible application in framework of physics related to Pierre Auger Observatory. The actual numerical implementation C++ consists Halley's Fritsch's iteration with branch-point expansion, asymptotic series rational fits as initial approximations.
A large scientific community depends on the precise modelling of complex processes in particle cascades various types matter. These models are used most prevalently cosmic-ray physics, astrophysical-neutrino and gamma-ray astronomy. In this white paper, we summarize necessary steps to ensure evolution future availability optimal simulation tools. The purpose document is not act as a strict blueprint for next-generation software, but provide guidance vital aspects its design. topics...
NA61/SHINE (SHINE = SPS Heavy Ion and Neutrino Experiment) is an experiment at the CERN using upgraded NA49 hadron spectrometer. Among its physics goals are precise production measurements for improving calculations of neutrino beam flux in T2K oscillation as well more reliable simulations cosmic-ray air showers. Moreover, p+p, p+Pb nucleus+nucleus collisions will be studied extensively to allow a study properties onset deconfinement search critical point strongly interacting matter.
The Pierre Auger Observatory is designed to unveil the nature and origins of highest energy cosmic rays. large geographically dispersed collaboration physicists wide-ranging collection simulation reconstruction tasks pose some special challenges for offline analysis software. We have implemented a general purpose framework which allows collaborators contribute algorithms sequencing instructions build up variety applications they require. includes machinery manage these user codes, organize...
We report on the development of a scanning mobile Mie-fluorescence lidar for detection and identification biological non-biological aerosols in lower troposphere. Our system has capability to perform azimuth elevation angle scans with an angular resolution 0.1° both day-time night-time conditions. As transmitter, we use solid state Nd:YAG laser simultaneous emission 8 ns light pulses at 1064 nm 266 maximum repetition rate 10 Hz. Scattered is collected by Newtonian telescope diameter 300 mm....
Abstract. The eruption of the Eyjafjallajökull volcano starting on 14 April 2010 resulted in spreading volcanic ash over most parts Europe. In Slovenia, presence was monitored using ground-based in-situ measurements, lidar-based remote sensing and airborne measurements. Volcanic origin detected aerosols confirmed by subsequent spectral chemical analysis collected samples. initial arrival to Slovenia first through precipitation, which occurred 17 at 01:00 UTC satellite-based sensing. At this...
Many extensions of the Standard Model particle physics predict a parallel sector new U(1) symmetry, giving rise to hidden photons. These photons are candidate particles for cold dark matter. They expected kinetically mix with regular photons, which leads tiny oscillating electric-field component accompanying matter particles. A conducting surface can convert such into emitted almost perpendicularly surface. The corresponding photon frequency follows from mass In this contribution we present...
We present a novel method for combining the analog and photon-counting measurements of lidar transient recorders into reconstructed photon returns. The takes account statistical properties two measurement modes estimates most likely number arriving photons values acquisition parameters describing modes. It extends improves standard ("gluing") methods does not rely on any ad hoc definitions overlap region nor background subtraction methods.