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Hydrodynamical simulations of merging galaxy clusters: giant dark matter particle colliders, powered by gravity
Ellen L. Sirks, David Harvey, Richard Massey +7
Terrestrial particle accelerators collide charged particles, then watch the trajectory of outgoing debris - but they cannot manipulate dark matter. Fortunately, dark matter is the…
A warm dark matter cosmogony may yield more low-mass galaxy detections in 21-cm surveys than a cold dark matter one
Kyle A. Oman, Carlos S. Frenk, Robert A. Crain +2
The 21-cm spectral line widths, , of galaxies are an approximate tracer of their dynamical masses, such that the dark matter halo mass function is imprinted in the number d…
The effects of self-interacting dark matter on the stripping of galaxies that fall into clusters
Ellen L. Sirks, Kyle A. Oman, Andrew Robertson +2
We use the Cluster-EAGLE (C-EAGLE) hydrodynamical simulations to investigate the effects of self-interacting dark matter (SIDM) on galaxies as they fall into clusters. We find that…
Velocity-dependent J-factors for annihilation radiation from cosmological simulations
Erin Board, Nassim Bozorgnia, Louis E. Strigari +6
We determine the dark matter pair-wise relative velocity distribution in a set of Milky Way-like halos in the Auriga and APOSTLE simulations. Focusing on the smooth halo component,…
Disentangling satellite galaxy populations using orbit tracking in simulations
Kyle A. Oman, Michael J. Hudson, Peter S. Behroozi
Physical processes regulating star formation in satellite galaxies represent an area of ongoing research, but the projected nature of observed coordinates makes separating differen…
Quenching star formation in cluster galaxies
Dan S. Taranu, Michael J. Hudson, Michael L. Balogh +4
In order to understand the processes that quench star formation within rich clusters, we construct a library of subhalo orbits drawn from CDM cosmological N-body simulations of…