• Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars

February 18, 2025 2:00 PM
PAIS 3205

Host:

Huaiyu Duan

Presenter:

Axel Gross (LANL)

Zoom link

The shape of galactic rotation curves provides strong evidence that visible galaxies are surrounded by large dark matter haloes, but little is known about their structure and properties. Significantly, in 1997, Navarro, Frenk, and White showed that the density profiles of simulated dark matter haloes can be universally fit by a simple functional form. Although there has been significant theoretical research conducted, there is still a lack of a consensus of how this universal structure arises. In this talk, I will present new scaling relations in the phase space structure of simulated haloes. These scaling relations allow for simple and approximate modeling of the fundamental structure of dark matter haloes based on r_max(E), defined as the inversion of the gravitational potential Φ(r). I will connect the origin of these scaling relations back to the universal structure that is observed and the theoretical efforts to understand its origin.