Dynamical Tracers of the Nature of Dark Matter

18 Feb 2025, 10:00 → 19 Feb 2025, 19:00 Europe/Rome

María Benito, Oscar Straniero (Istituto Nazionale di Astrofisica (INAF))

This online workshop is intended for extensive discussions on the distinctive features in galactic dynamics that imprint the different empirically allowed properties of dark matter, such as its mass (e.g., ultra-light, axions, WDM-like, WIMP-like, PBHs) or interaction type (FDM, SIDM, CDM). Our goal is to further investigate the possibility of leveraging galactic dynamics as a tool to probe the nature of dark matter, with a special emphasis on understanding how particular dynamical tracers in galaxies can be used to constrain specific general properties of dark matter.

The workshop will last two days, each with three invited talks (30 minutes per talk). Each day will conclude with a one-hour discussion session, bringing the total duration per day to 2.5 hours.

Tuesday 18 February

1 TBD

Speaker: Jesús Zavala

2 Dark matter density profiles on galactic and sub-galactic scales

Speaker: Kohei Hayashi

3 Gravitational dynamical probes of the nature of dark matter in galaxies

The hypothesis of dark matter was introduced to address observations associated with gravitational dynamics in cosmology and in galaxies. It seems natural to seek new observables that could shed light on dark matter within the same ballpark of minimal gravitational interactions, in dark matter-dominated systems. I will discuss some attempts of this type focusing on galaxies, and covering lines of research including gravitational lensing, stellar kinematics, and globular cluster dynamics.

Speaker: Kfir Blum

4 OPEN DISCUSSION

Questions for the speakers, comments, suggestions, perspectives....

Wednesday 19 February

5 What Can Dwarf Galaxies Reveal about the Nature of Dark Matter

Speaker: Ethan O. Nadler

6 Motivations for self-interacting dark matter and its viable signatures

Speaker: Manoj Kaplinghat

7 TBD

Speaker: Oliver Hahn

8 OPEN DISCUSSION