Constraining dark matter models with strong gravitational lensing
Physikalisches Kolloquium
| Datum: | 24.11.2025, 14:15 - 16:45 Uhr |
| Kategorie: | Kolloquium |
| Ort: | Hubland Süd, Geb. P1 (Physik), Röntgen-Hörsaal, Online |
| Veranstalter: | Fakultät für Physik und Astronomie |
| Vortragende: | Prof. Dr. Simona Vegetti (Max-Planck-Institut für Astrophysik, Garching) |
Am 24. November 2025 um 14:15 Uhr findet das nächste Physikalische Kolloquium zum Thema "Constraining dark matter models with strong gravitational lensing" im Röntgen-Hörsaal des Physikalischen Instituts und online via Zoom statt.
The Cold Dark Matter model for structure formation is currently the most successful at reproducing many observations, but it remains largely untested in the non-linear sub-galactic regime. A clear prediction of this model is that a significant number of low-mass haloes should populate any galaxy and its line of sight. As most of these objects are expected to be completely dark, strong gravitational lensing provides a unique channel to detect them and determine the properties of dark matter by constraining the halo-mass function at the low-
mass end.
In this talk, I will review the current status of the field and present the latest observational constraints on the halo mass function. I will discuss the most significant challenges in robustly constraining the properties of dark matter with strong gravitational lensing observations, particularly focusing on the main sources of systematic errors from both the observational and theoretical sides of the problem. I will then focus on the expected role of existing and upcoming observing facilities such as Euclid, ELTs, SKA, and the ngVLA in this field.
Teilnahme
Präsenz im Röntgen-Hörsaal und online.
