The effect of dark matter deformations of the Milky Way and the Large Magellanic Cloud on the Orphan-Chenab stream


The ongoing merger of the Milky Way and the Large Magellanic Cloud (LMC) is deforming the dark matter haloes of both galaxies. With stellar streams being sensitive to the gravitational potential, the Orphan-Chenab (OC) stream is particularly insightful as it spans the inner and outer Milky Way, and it passes close to the LMC. I will present the first models of the OC stream in the time-dependent halos of the Milky Way and the LMC that are described by basis function expansions of N-body simulations of the Milky Way-LMC passage. I will show how these deformations have an observable signature on the OC stream.

May 16, 2022
Brown Bag Lunch Talk at MIT
Massachusetts Institute of Technology, Cambridge, USA
Sophia Lilleengen
Sophia Lilleengen
Astrophysics PhD Candidate

I am interested how stellar streams are affected by time-dependent dark matter halos.