One Dark Matter Profile Please, Hold the Subhaloes
When we observe galaxies and measure their dark matter halos, we exclude subhaloes from the halo’s mass profile. When we simulate haloes, we include them. But what if we didn’t?
The Grand Twirl
How well a galaxy dances may be a matter of life or death.
Baryonification – Dark matter N-body simulations and the impact of gas-trophysics
The effects of gas are complicated and challenging to simulate. Today’s paper explores a way to account for gas in cosmological simulations without actually including it!
A Dizzying Diversity of Dwarf Galaxies
Today’s paper explains why the rotation curves of dwarf galaxies continue to baffle astronomers.
How to Un-squash a Galaxy
Does our galaxy look like an Advil, a NyQuil, or just a simple sphere? The simulations studied in today’s paper may have the answer.
Halo assembly bias rides a gravitational tide
The local gravitational tides are really good at connecting the properties of dark matter halos to the cosmic web.