On Monday, May 13, 2024, at 12:00 c.t., the next date of our Physics Colloquium will take place.
The speaker is Dr. Marcel Pawlowski (Leibniz Institute for Astrophysics Potsdam) on the topic "Dwarf Galaxies vs. Cosmology: Do They Dance To Λcdm's Tune?".
Dwarf satellite galaxy systems such as that of the Milky Way have emerged as a critical test cases for the cosmological standard model ΛCDM. They revealed intriguing small-scale challenges via comparisons to simulations. Notably, the persistent issue of satellite galaxies' unexpected spatial alignments and coherent velocities-known as the Planes of Satellite Galaxies Problem-stands as a
significant anomaly. Despite advancements in understanding through Gaia's expansion of proper motion measurements and broader observational studies beyond our Local Group, these satellite phase-space correlations continue to spark heated debates regarding their implications for cosmology. I will introduce the research area of systems of satellite galaxies and review some of our recent progress regarding planes of satellite galaxies, asymmetrical distributions, and a potential too-many- satellites-problem.
Abstract of the lecture by Dr. Pawlowski.
The introduction will be made by Prof. Dr. Hendrik Hildebrandt.
The faculty cordially invites all interested parties. The event will take place in the lecture hall HNB. We offer coffee and cookies before the colloquium.
All dates of the Physics Colloquium can be found here.