Fredagskollokvium: Mysterious structures in our Galaxy obscuring the view towards the first stars in the Universe
Vibor Jelic, Ruder Boskovic Institute, head of the Laboratory for astroparticle physics and astrophysics.
With the novel world-leading radio telescope LOFAR (the Low Frequency Array), astronomers
are expected to detect the cosmological radiation emitted billions of years ago, from the time of the
first ‘stars’. However, detection of this weak emission is difficult. Synchrotron emission from our own
Galaxy intervenes, like mist on an autumn morning. To clear the view towards the early childhood
of the Universe, we need to study the emission from our Galaxy in great detail. During my talk I will
give an overview of the LOFAR-EoR key science project, its challenges and present its most recent
results. A special focus will be given to the rich morphological features discovered with the LOFAR
in several fields at high Galactic latitudes, associated with small column densities of the interstellar
medium located somewhere within the Local Bubble. At the end I will discuss their puzzling correlation
with the Planck dust polarisation data and HI data.