Ironing the folds: The phase space chevrons of a GSE-like merger as a dark matter subhalo detector
Elliot Y. Davies,
Eugene Vasiliev,
Vasily Belokurov
et al.
Abstract:Recent work uncovered features in the phase space of the Milky Way's stellar halo which may be attributed to the last major merger. When stellar material from a satellite is accreted onto its host, it phase mixes and appears finely substructured in phase space. For a high-eccentricity merger, this substructure most clearly manifests as numerous wrapping chevrons in (π£ π , π) space, corresponding to stripes in (πΈ, π π ) space. We introduce the idea of using this substructure as an alternative subhalo dete… Show more
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