Tidal Streams and Debris Flows: Dark Matter Velocity Substructure and Direct Detection

          @misc{ pirsa_PIRSA:11090085,
            doi = {10.48660/11090085},
            url = {https://pirsa.org/11090085},
            author = {Kuhlen, Michael},
            keywords = {Particle Physics},
            language = {en},
            title = {Tidal Streams and Debris Flows: Dark Matter Velocity Substructure and Direct Detection},
            publisher = {Perimeter Institute},
            year = {2011},
            month = {sep},
            note = {PIRSA:11090085 see, \url{https://pirsa.org}}
          }
          

Abstract

High resolution simulations of Galactic Cold Dark Matter halos reveal staggering amounts of substructure, both in configuration and velocity space. In this talk I will focus on the latter. In addition to spatially localized subhalos and streams, I will also discuss so-called debris flows -- incompletely phase-mixed material originating in numerous accretion and merging events that are the hallmark of the hierarchical build-up of the host halo. Finally, I will briefly discuss the presence and direct detection consequences of a dark disk in the Eris simulation, a cosmological simulation including baryonic physics of the formation of a realistic looking disk galaxy.