The Turbulent and Dynamical Environment of the Supermassive Black Hole Sgr A* in the Center of our Galaxy

Kolloquium Fachbereich Physik


16. Dezember 2021 17:15 – 16. Dezember 2021 18:45

Fachbereich Physik, Großer Hörsaal Renthof 5


The technological evolution of ground-based observatories and infrared instruments (1.45 µm - 5 µm) results in sub-parsec observations that reveal the direct vicinity of SgrA*, the supermassive black hole in the center of our Galaxy. Since the first finding of fast moving S-stars in the related S-cluster, observations resulted in unexpected discoveries. Surprisingly, the 40 mpc wide cluster contains young O/B stars that raise the question of where they have formed. This unresolved and fundamental question is translated into the "Paradox of youth". With adapted and sophisticated high-pass filter, we are able to push the imaging results to the detection limit. On these scales, the influence of General Relativity is eminent. In addition, black-hole physics on AU scales becomes important to categorize the fruitful and various observational outcomes.
Here, I want to provide an overview of the recent results of me and my team and give an outlook on upcoming projects.



Dr. Florian Peißker, I. Physikalisches Instituit, Universität zu Köln


Fachbereich Physik