A5015755346- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Radio Astronomy Observations and Technology
- Gamma-ray bursts and supernovae
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Stellar, planetary, and galactic studies
- Quantum Chromodynamics and Particle Interactions
- Corporate Governance and Law
- Astronomy and Astrophysical Research
- Pulsars and Gravitational Waves Research
- Astrophysics and Star Formation Studies
- Solar and Space Plasma Dynamics
- Laser-Plasma Interactions and Diagnostics
- Astrophysical Phenomena and Observations
- Particle Accelerators and Free-Electron Lasers
- Astronomical Observations and Instrumentation
- Astro and Planetary Science
- Atmospheric Ozone and Climate
- Radiation Therapy and Dosimetry
- Cosmology and Gravitation Theories
- Laser-induced spectroscopy and plasma
- Ionosphere and magnetosphere dynamics
Karlsruhe Institute of Technology
2016-2025
Pacific Northwest National Laboratory
2024
Czech Academy of Sciences, Institute of Physics
2021-2024
Czech Academy of Sciences
2021-2024
Istituto Nazionale di Fisica Nucleare
2024
Fritz Bauer Institut
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
Theano is a Python library that allows to define, optimize, and evaluate mathematical expressions involving multi-dimensional arrays efficiently. Since its introduction, it has been one of the most used CPU GPU compilers - especially in machine learning community shown steady performance improvements. being actively continuously developed since 2008, multiple frameworks have built on top produce many state-of-the-art models. The present article structured as follows. Section I provides an...
A new grid of 65 faint near-infrared standard stars is presented. They are spread around the sky, lie between 10th and 12th magnitude at K, measured in most cases to precisions better than 0.001 mag J, H, Ks bands; latter a medium-band modified K. secondary list red suitable for determining color transformations photometric systems also
Dark matter particle annihilation or decay can produce monochromatic gamma-ray lines and contribute to the diffuse background. Flux upper limits are presented for spectral from 7 200 GeV background 4.8 264 obtained two years of Fermi Large Area Telescope data integrated over most sky. We give cross-section lifetime lower dark models that spectrum, including proposed as explanations PAMELA cosmic-ray data.
The Solar MAgnetic Connection HAUS 1 tool (Solar-MACH) is an open-source completely written in Python that derives and visualizes the spatial configuration solar magnetic connection of different observers (i.e., spacecraft or planets) heliosphere at times. For doing this, interplanetary space obtained by classic Parker Heliospheric Magnetic Field (HMF). In close vicinity Sun, a Potential Source Surface (PFSS) model can be applied to connect HMF photosphere. Solar-MACH especially aimed...
Intense heavy ion beams from the Gesellschaft für Schwerionenforschung (GSI, Darmstadt, Germany) accelerator facilities, together with two high energy laser systems: petawatt for experiments (PHELIX) and nanosecond (NHELIX) are a unique combination to facilitate pioneering beam-plasma interaction experiments, generate probe high-energy-density (HED) matter address basic physics issues associated driven inertial confinement fusion. In one class of will be used plasma beam study loss energetic...
Near-infrared J, H, and Ks photometric measurements of 92 Cepheids in the Large Magellanic Cloud are presented. The stars spread over face Cloud, their periods range from 3 to 100 days, light curves sampled at an average 22 phase points per star. intensity-weighted mean magnitudes colors define period-luminosity-color (PL or PLC) relations whose uncertainties due differential metal abundance reddening/extinction effects minimal. dispersions infrared PL, PLC, extinction-free period-Wesenheit...
We present optical and infrared spectroscopy of the first 2 months evolution Type II supernova SN 1999em. combine these data with high-quality optical/infrared photometry beginning only 3 days after shock breakout, in order to study performance "expanding photosphere method" (EPM) determination distances. With this purpose, we develop a technique measure accurate photospheric velocities by cross-correlating observed model spectra. The application 1999em shows that can reach an average...
At the Helmholtz center GSI, PHELIX (Petawatt High Energy Laser for heavy Ion eXperiments) has been commissioned operation in stand-alone mode and, combination with ions accelerated up to an energy of 13 MeV/u by ion accelerator UNILAC. The heavy-ion beams available at GSI enables a large variety unique experiments. Novel research opportunities are spanning from study ion–matter interaction, through challenging new experiments atomic physics, nuclear and astrophysics, into field relativistic...
We report the observation of a steepening in cosmic ray energy spectrum heavy primary particles at about 8×10(16) eV. This structure is also seen all-particle spectrum, but less significant. Whereas "knee" 3-5×10(15) eV was assigned to light masses by KASCADE experiment, new found KASCADE-Grande experiment caused primaries. The result obtained independent measurements charged particle and muon components secondary extensive air showers range 10(16) 10(18) data are analyzed on single-event...
GRB110721A was observed by the Fermi Gamma-ray Space Telescope using its two instruments Large Area (LAT) and Burst Monitor (GBM). The burst consisted of one major emission episode which lasted for ~24.5 seconds (in GBM) had a peak flux 5.7\pm0.2 x 10^{-5} erg/s/cm^2. time-resolved spectrum is best modeled with combination Band function blackbody spectrum. energy component initially 15\pm2 MeV, highest value ever detected in GRB. This measurement made possible combining GBM/BGO data LAT Low...
We present a summary of recent tests and measurements hadronic interaction properties with air showers. This report has special focus on muon density measurements. Several experiments reported deviations between simulated recorded densities in extensive showers, while others no discrepancies. combine data from eight leading shower to cover energies PeV tens EeV. Data are combined using the z -scale, unified reference scale based Energy-scales cross-calibrated. Above 10 PeV, we find deficit...
Recent results of the KASCADE-Grande experiment provided evidence for a mild knee-like structure in all-particle spectrum cosmic rays at $E={10}^{16.92\ifmmode\pm\else\textpm\fi{}0.10}\text{ }\text{ }\mathrm{eV}$, which was found to be due steepening flux heavy primary particles. The combined components light and intermediate masses compatible with single power law energy range from ${10}^{16.3}$ ${10}^{18}\text{ }\mathrm{eV}$. In this paper, we present an update analysis by using data...