| Wednesday 1 January 2025 | |
| Events for day: Tuesday 26 November 2024 |
| 11:00 - 12:30 Weekly Seminar Magnetic Fields in Galaxies: Amplification and Feedback School ASTRONOMY Magnetic fields pervade the universe on different scales but their origin, feedback, and evolution in galaxies are of pressing questions. The alpha-omega dynamo mechanism suggested to explain large-scale, ordered field in galaxies is recently challenged by both polarization observations and cosmological simulations. Our observations show that a small-scale dynamo together with magnetic flux freezing can likely explain the distribution of the ordered magnetic field. We find that the structure and regularity of the magnetic field plays an important role in propagation of cosmic ray electrons and, consequently, on the well-known radio-infrared ... |