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

Kolloquium Fachbereich Physik

Veranstaltungsdaten

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

Fachbereich Physik, Großer Hörsaal Renthof 5

Abstract

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.

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Referierende

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


Veranstalter

Fachbereich Physik