Events Daily

Tuesday, November 16, 2021

Implications of the ongoing interaction between the Milky Way and the Large Magellanic Cloud for the CDM paradigm
Nico Garavito-Camargo, Flatiron CCA
Event Type: Astro Seminar
Time: 2:00 PM - 3:15 PM
Location: 726 Broadway, 940, CCPP Seminar
Abstract: The ongoing interaction with the Large Magellanic Cloud LMC is revolutionizing our view of the dynamical state of the Milky. The perturbations caused by the LMC open new avenues to test the nature of dark matter. Using results from high-resolution N-body simulations, I will describe the two main perturbations caused by the LMC: the DM wake and the reflex motion. The recent discovery of the stellar wake counterpart of the DM wake opens the opportunity to test the different DM models. Furthermore, I will illustrate how the time-dependent potential of the MW--LMC system complicates efforts to recover the triaxial structure of the halo using the kinematic of the stellar halo. Finally, I will discuss how some current challenges to cold dark matter theory, such as the plane of satellites of the MW, are likely natural consequences of the MW--LMC interaction.