Seminar details
Data: 25.04.2023
Yannis Liodakis (Univ.Turku)
Radio-loud AGN in the discovery era of X-ray polarimetry
Streszczenie:
X-ray polarization is a crucial probe of the magnetic field structure
and emission processes in astrophysical systems. This is particularly
true for active galactic nuclei (AGN). In radio-loud AGN, X-ray
polarimetry allows us to investigate particle acceleration and
composition in jets. Until now, polarization observations have been
limited to the radio-to-optical range, thereby leaving a gap in our
knowledge of the processes and physical conditions in the most energetic
objects. The recently launched Imaging X-ray Polarimetry Explorer --
IXPE, the first X-ray polarization mission to target AGN, offers a
radically new way of studying high-energy processes in relativistic
jets. I will discuss the multiwavelength polarization observations and
results from the first year of IXPE observations of radio galaxies and
blazars that clearly demonstrate the importance of X-ray polarization in
our understanding of the Universe.