A5017129339- Astrophysics and Cosmic Phenomena
- Solar and Space Plasma Dynamics
- Galaxies: Formation, Evolution, Phenomena
- Radio Astronomy Observations and Technology
- Astronomy and Astrophysical Research
- Magnetic confinement fusion research
- History and Developments in Astronomy
- Astrophysics and Star Formation Studies
- Ionosphere and magnetosphere dynamics
Jagiellonian University
2014-2021
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...
The shape of low-frequency radio continuum spectra normal galaxies is not well understood, the key question being role physical processes such as thermal absorption in shaping them. In this work we take advantage LOFAR Multifrequency Snapshot Sky Survey (MSSS) to investigate for a large sample nearby star-forming galaxies. Using measured 150MHz flux densities from MSSS survey and literature at various frequencies have obtained integrated 106 are explained through use three-dimensional model...
Reconnection is an important process that rules dissipation and diffusion of magnetic energy in plasmas. It already clear its rate enhanced by turbulence reconnection itself may increase stochasticity, but the main mechanism connects these two effects still not completely understood. The aim this work to identify, from terms electromotive force, dominant physical responsible for enhancing turbulent We employ full three-dimensional numerical simulations driven stochastic estimate production...
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...