Krzysztof Katarzyński

Cosmic ray-driven dynamo, galactic winds and synchrotron radio-emission of Milky Way-type galaxies.

7 lip 2026, 14:00
20min
Radioastronomia/parter-sala sem - Sala seminaryjna (Radioastronomia)

Radioastronomia/parter-sala sem - Sala seminaryjna

Radioastronomia

Mówca

Prof. Michał Hanasz (NCU)

Opis

A case of the successful Polish-German collaboration in theoretical astrophysics.

Recent studies of the magnetized interstellar medium indicate that cosmic rays accelerated in supernova remnants play a crucial role in driving galactic winds and amplifying galactic magnetic fields. Cosmic rays have a strong dynamical impact on the interstellar medium.

The model, developed through Polish-German collaboration and presented in a series of over a dozen publications, has demonstrated high effectiveness in generating magnetic fields in galaxies through the action of cosmic rays. Similarly, in subsequent studies, we demonstrated the important role of cosmic rays in driving galactic winds.

Current research focuses on comparing computational models with observations of synchrotron emission, gamma-ray radiation, and the isotopic composition and energy spectra of secondary cosmic rays recorded by the AMS-02 particle detectors on the International Space Station (ISS). The work, carried out by international teams involving scientists from Poland, Germany, and other European countries, aims to gain a better understanding of the interactions between cosmic rays and the classical components of the interstellar medium.

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