A5003291491- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Solar and Space Plasma Dynamics
- Neutrino Physics Research
- Astrophysics and Star Formation Studies
- Radio Astronomy Observations and Technology
- Astrophysical Phenomena and Observations
- Galaxies: Formation, Evolution, Phenomena
- Radiomics and Machine Learning in Medical Imaging
- Particle Accelerators and Free-Electron Lasers
- Pulsars and Gravitational Waves Research
- Advanced X-ray Imaging Techniques
- Particle physics theoretical and experimental studies
- Scientific Computing and Data Management
- Quantum, superfluid, helium dynamics
- Advanced Chemical Physics Studies
- Photocathodes and Microchannel Plates
- Geomagnetism and Paleomagnetism Studies
- Radiation Detection and Scintillator Technologies
- Inorganic Fluorides and Related Compounds
- Scientific Research and Discoveries
- Distributed and Parallel Computing Systems
- Research Data Management Practices
AGH University of Krakow
2014-2023
Akademickie Centrum Komputerowe Cyfronet AGH
2017-2023
Sorbonne Paris Cité
2019
Délégation Paris 7
2019
CEA Paris-Saclay
2019
Université Paris-Saclay
2019
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2019
Université Paris Cité
2019
Centre National de la Recherche Scientifique
2019
Astrophysique, Instrumentation et Modélisation
2019
Context. Traditionally, TeV- γ -ray astronomy has been conducted by experiments employing proprietary data and analysis software. However, the next generation of instruments, such as Cherenkov Telescope Array Observatory (CTAO), will be operated open observatories. Alongside data, they also make associated software tools available to a wider community. This necessity prompted development open, high-level, astronomical customized for high-energy astrophysics. Aims. In this article, we present...
The field of gamma-ray astronomy has seen important progress during the last decade, yet there exists so far no common software framework for scientific analysis telescope data. We propose to fill this gap by means GammaLib software, a generic library that we have developed support event been written in C++ and all functionality is available Python through an extension module. On top ctools package, suite tools enables building flexible workflows Imaging Air Cherenkov Telescope are inspired...
Recently the automatic processing of seismological data recorded in areas with anthropogenic seismicity has become an important issue, as number available recordings increased significantly over past few years. The problem is also addressed within DT-Geo Project WP8: Anthropogenic Geophysical Extremes, where a specific workflow being developed for induced seismicity-related waveforms. designed set independent applications implemented inside interactive, publicly Episodes Platform...
We report the results of a multifrequency campaign targeting S5 0716+714 in flaring state source observed 2015 January and February. The observations have been performed using following instruments: Fermi/Large Area Telescope (LAT), Nuclear Spectroscopic Array, X-ray Ultraciolet/Optical Telescope. elevated flux level was visible all frequencies outburst consists five sub-flares. In this paper we focus on analysis both soft hard regimes for data collected with NuStar Swift/XRT. This is first...
<i>Context. <i/>Irregular galaxies are usually smaller and less massive than their spiral, S0, elliptical counterparts. Radio observations indicate that a magnetic field is present in irregular whose value similar to spiral galaxies. However, the conditions interstellar medium of an galaxy unfavorable for amplification because slow rotation low shearing rate.<i>Aims. <i/>We investigate cosmic-ray driven dynamo galaxy. We study its efficiency under weak shear. The star formation also taken...
We have studied long-term optical, ultraviolet (UV) and X-ray observations of OJ 287 collected with the UVOT XRT instruments mounted on board Swift satellite to quantify spectral temporal variability patterns observed during different activity states.We characterized flux variations using data almost 11 yr monitoring blazar.Significant blazar has been detected both in index from optical regimes.We noted that range are more pronounced than ones band.There is no clear relation between...
Star-forming dwarf galaxies can be seen as the local proxies of high-redshift building blocks more massive according to current paradigm hierarchical galaxy formation. They are low-mass objects, and therefore their rotation speed is very low. Several observed show quite strong magnetic fields. These cases ordered fields seem correlate with a high, but not extremely star formation rate. We investigate whether these could generated by cosmic-ray-driven dynamo. The environment unfavourable for...
The blazar S5 0716+714 has been monitored in its flaring state between 2015 January 19 and February 22 with Swift/XRT. During this period an exceptional flux level was observed the X-ray range as well other wavelengths, e.g. optical, near infrared very high energy $\gamma$ rays. Here, we report observations of carried out during outburst. spectra, described broken power-law model, disentangle both synchrotron inverse Compton components. break shifts towards higher energies increasing flux,...
Context. For the first time, our magnetohydrodynamical numerical calculations provide results for a three-dimensional model of barred galaxies involving cosmic-ray driven dynamo process that depends on star formation rates. Furthermore, we argue can account number magnetic features in galaxies, such as arms observed along gaseous arms, inter-arm regions, polarized emission is at strongest central part galaxy, where bar situated, forms ridges coinciding with dust lanes leading edges bar, well...
Very High Energy gamma-ray astronomy with the Cherenkov Telescope Array (CTA) is evolving towards model of a public observatory. Handling, processing and archiving large amount data generated by CTA instruments delivering scientific products are some challenges in designing Data Management. The participation scientists from within Consortium greater worldwide community necessitates sophisticated analysis system capable providing unified efficient user access to data, software computing...
Low-mass galaxies radio observations show in many cases surprisingly high levels of magnetic field. The mass and kinematics such objects do not favour the development effective large-scale dynamo action. We attempted to check if cosmic-ray-driven can be responsible for measured magnetization this class poorly investigated objects. how starburst events on whole, as well when part galactic disk, influence field evolution. created a model dwarf/Magellanic-type galaxy described by gravitational...
In this article, we present Gammapy, an open-source Python package for the analysis of astronomical $\gamma$-ray data, and illustrate functionalities its first long-term-support release, version 1.0. Built on modern scientific ecosystem, Gammapy provides a uniform platform reducing modeling data from different instruments many scenarios. complies with several well-established conventions in high-energy astrophysics, providing serialized products that are interoperable other software...
Relativistic jets propagating through an ambient medium must produce some observational effects along their side boundaries because of interactions across the large velocity gradient. One possible effect such interaction would be a sheared magnetic field structure at jet boundaries, leading to characteristic radio polarization pattern. As proposed by Ostrowski, another can come from generation high-energy cosmic ray component boundary, producing dynamic on surrounding and forming cocoon...
In this paper we present our results of three-dimensional global numerical simulations barred and irregular galaxies including a process cosmic-ray driven dynamo in respect to star formation rates. We are looking for the answer which physical mechanism could be liable magnetic field evolution observed both types mentioned galaxies. Our main goal is compare with observations, so prepare model high-frequency (Faraday rotation-free) polarized radio emission maps from resulted fields cosmic rays...
Abstract We present the results of three-dimensional, fully non-linear MHD simulations large-scale magnetic field evolution in a barred galaxy with back reaction to gas. also include process cosmic-ray driven dynamo. In addition, we check what physical processes are responsible for tidally influenced spiral galaxies. solve equations gas and gravitationally prescribed bulge, disk halo which travels along common orbit second body. order compare our modeling observations construct maps...
Abstract Radio observations show that magnetic fields are present in dwarf irregular galaxies (dIrr) and its strength is comparable to found spiral galaxies. Slow rotation, weak shear shallow gravitational potential the main features of a typical dIrr galaxy. These conditions interstellar medium galaxy seem unfavourable for amplification field through dynamo process. Cosmic-ray driven one galactic model, which has been successfully tested case We investigate this model ISM study efficiency...
Abstract We investigate the cosmic ray driven dynamo in interstellar medium of irregular galaxy. The observations (Chyży et al . 2000, 2003) show that magnetic field galaxies is present and its value reaches same level as spiral galaxies. However conditions galaxy are very unfavorable for amplification due to slow rotation low shearing rate. In this work we numerical model includes magnetohydrodynamical by rays provided random supernova explosions. describe models characterized different...