How Many Bursts Does it Take to Form a Core at the Center of a Galaxy?

Understand

We present a novel method for systematically assessing the impact of central potential fluctuations associated with bursty outflows on the structure of dark matter halos for classical and ultra-faint dwarf galaxies.

• Specifically, we use dark-matter-only simulations augmented with a manually-added massive particle that modifies the central potential and approximately accounts for a centrally-concentrated baryonic component.
• This approach enables precise control over the magnitude, frequency, and timing of rapid outflow events.
• We demonstrate that this method can reproduce the established result of core formation for systems that undergo multiple episodes of bursty outflows.