Abstract:  Much progress has been made in recent years by the galaxy simulation community in making realistic galaxies, primarily by more accurately capturing the effects of baryons on the structural evolution of dark matter halos at high resolutions. This progress has altered theoretical expectations for galaxy evolution within a Cold Dark Matter (CDM) model, reconciling many earlier discrepancies between theory and observations. In this talk, I will argue that the successes actually open the door for models other than CDM to accurately describe our Universe. To make progress, we must be able to understand both (1) the uncertainties inherent in our CDM+baryon simulations, and (2) the predictions for galaxy formation within alternative dark matter models.

Host:  Eric Feigelson

Astro Colloquium and 'coffee & cookies' Department gathering (3:45-4:00pm)

https://psu.zoom.us/j/94153970341