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Properties of Resonantly Produced Sterile Neutrino Dark Matter Subhalos
Shunsaku Horiuchi, Brandon Bozek, Kevork N. Abazajian +4
The anomalous 3.55 keV X-ray line recently detected towards a number of massive dark matter objects may be interpreted as the radiative decays of 7.1 keV mass sterile neutrino dark…
Resonant Sterile Neutrino Dark Matter in the Local and High-z Universe
Brandon Bozek, Michael Boylan-Kolchin, Shunsaku Horiuchi +3
Sterile neutrinos comprise an entire class of dark matter models that, depending on their production mechanism, can be hot, warm, or cold dark matter. We simulate the Local Group a…
Sweating the small stuff: simulating dwarf galaxies, ultra-faint dwarf galaxies, and their own tiny satellites
Coral Wheeler, Jose Onorbe, James S. Bullock +5
We present FIRE/Gizmo hydrodynamic zoom-in simulations of isolated dark matter halos, two each at the mass of classical dwarf galaxies () and…
Satellites of LMC-Mass Dwarfs: Close Friendships Ruined by Milky Way Mass Halos
Alis J. Deason, Andrew R. Wetzel, Shea Garrison-Kimmel +1
Motivated by the recent discovery of several dwarfs near the Large Magellanic Cloud (LMC), we study the accretion of massive satellites onto Milky Way (MW)/M31-like halos using the…
Taking Care of Business in a Flash: Constraining the Timescale for Low-Mass Satellite Quenching with ELVIS
Sean P. Fillingham, Michael C. Cooper, Coral Wheeler +3
The vast majority of dwarf satellites orbiting the Milky Way and M31 are quenched, while comparable galaxies in the field are gas-rich and star-forming. Assuming that this dichotom…
Satellite Dwarf Galaxies in a Hierarchical Universe: Infall Histories, Group Preprocessing, and Reionization
Andrew R. Wetzel, Alis J. Deason, Shea Garrison-Kimmel
In the Local Group (LG), almost all satellite dwarf galaxies that are within the virial radius of the Milky Way (MW) and Andromeda (M31) exhibit strong environmental influence. The…