GeomGravX: 10 Years of Geometric Foundations of Gravity and eXtensions (in Tartu)

Session

Nassim Bozorgnia: Imprints of the Large Magellanic Cloud on the Milky Way dark matter halo

2 Jul 2026, 11:25

A106 (Physicum, University of Tartu)

Description

The Large Magellanic Cloud (LMC) induces a significant time-dependent gravitational perturbation on the Milky Way dark matter halo, altering the local phase-space distribution of dark matter in the Solar neighborhood. Cosmological simulations that sample potential Milky Way formation histories provide a powerful framework to characterize the dynamical response of the halo to such a massive satellite interaction. In this talk, I will discuss the imprint of the LMC-Milky Way system on the local dark matter distribution using state-of-the-art cosmological simulations. I will then discuss the consequences of these non-equilibrium features for dark matter phenomenology, including their impact on both standard and non-standard interaction models, spanning light and heavy dark matter scenarios.

64. Imprints of the Large Magellanic Cloud on the Milky Way dark matter halo

Nassim Bozorgnia

02/07/2026, 11:25

Oral talk

The Large Magellanic Cloud (LMC) induces a significant time-dependent gravitational perturbation on the Milky Way dark matter halo, altering the local phase-space distribution of dark matter in the Solar neighborhood. Cosmological simulations that sample potential Milky Way formation histories provide a powerful framework to characterize the dynamical response of the halo to such a massive...