Speaker
Cheng Wu
Description
Building on a dynamics-based halo model proposed by Salazar [Edgar M. Salazar et al., arXiv:2406.04054], we compare the halo radius derived from the halo-mass correlation function with that from the halo-galaxy correlation function. The discrepancy between these two radii shows a strong dependence on halo mass and galaxy mass. To explain this relationship, we have developed a dynamical friction model. Using this model, we can predict the halo radius measured from galaxies when given the halo radius measured from particles. Consequently, this model provides a valuable framework for connecting the theoretical dark matter halo model with observational galaxy data.
Primary authors
Cheng Wu
Prof.
Eduardo Rozo
(University of Arizona)
