429 citations · 470 across the 11 of their papers we have counts for
5 papers · 1 filter
Stellar Cores Live Long and Prosper in Cuspy Dark Matter Halos
Jenni Häkkinen, Alexander Rawlings, Till Sawala +1
The existence of cuspy or cored centers of dark matter halos is a crucial discriminant between different dark matter models. It has recently been claimed based on dynamical argumen…
Signatures of dark subhalos in dwarf spheroidal galaxies: I. Fluctuations in surface density
Eduardo Vitral, Jorge Peñarrubia, Matthew G. Walker
Dark matter (DM) subhalos offer critical tests of cosmological models through their abundance and properties, yet most remain undetectable due to their lack of stars. We investigat…
Gravothermal expansion of dwarf spheroidal galaxies heated by dark subhaloes
Jorge Peñarrubia, Raphaël Errani, Eduardo Vitral +1
We use analytical and -body methods to study the evolution of dwarf spheroidal galaxies (dSphs) embedded in dark matter (DM) haloes that host a sizeable subhalo population. Dark…
Stellar Mass Segregation in Dark Matter Halos
Raphaël Errani, Jorge Peñarrubia, Matthew G. Walker
We study the effect of stellar mass segregation driven by collisional relaxation within the potential well of a smooth dark matter halo. This effect is of particular relevance for…
Impulsive mixing of stellar populations in dwarf spheroidal galaxies
Raphaël Errani, Matthew G. Walker, Simon Rozier +2
We study the response of mono-energetic stellar populations with initially isotropic kinematics to impulsive and adiabatic changes to an underlying dark matter potential. Half-ligh…