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Sterile neutrino dark matter bounds from galaxies of the Local Group
Shunsaku Horiuchi, Philip J. Humphrey, Jose Onorbe +3
We show that the canonical oscillation-based (non-resonant) production of sterile neutrino dark matter is inconsistent at % confidence with observations of galaxies in the Loc…
ELVIS: Exploring the Local Volume in Simulations
Shea Garrison-Kimmel, Michael Boylan-Kolchin, James Bullock +1
We introduce a set of high-resolution dissipationless simulations that model the Local Group (LG) in a cosmological context: Exploring the Local Volume in Simulations (ELVIS). The…
On the stark difference in satellite distributions around the Milky Way and Andromeda
Basilio Yniguez, Shea Garrison-Kimmel, Michael Boylan-Kolchin +1
We compare spherically-averaged radial number counts of bright (> 10^5 Lsun) dwarf satellite galaxies within 400 kpc of the Milky Way (MW) and M31 and find that the MW satellites a…
How to Zoom: Bias, Contamination, and Lagrange Volumes in Multimass Cosmological Simulations
Jose Oñorbe, Shea Garrison-Kimmel, Ariyeh H. Maller +3
We perform a suite of multimass cosmological zoom simulations of individual dark matter halos and explore how to best select Lagrangian regions for resimulation without contaminati…
Can Feedback Solve the Too Big to Fail Problem?
Shea Garrison-Kimmel, Miguel Rocha, Michael Boylan-Kolchin +2
The observed central densities of Milky Way dwarf spheroidal galaxies (dSphs) are significantly lower than the densities of the largest (Vmax about 35 km/s) subhalos found in dissi…