Modeling small galaxies during the Epoch of Reionisation
  Small galaxies are thought to be the main contributors to the ionising budget
of the Universe before reionisation was complete. There have been a number of
numerical studies trying to quantify their ionising efficiency through the
escape fraction $f_{esc}$. While there is a clear trend that $f_{esc}$ is
higher for smaller haloes, there is a large scatter in the distribution of
$f_{esc}$ for a single halo mass. We propose that this is due to the intrinsic
burstiness of star formation in low mass galaxies. We performed high resolution
radiative hydrodynamics simulations with Ramses-RT to model the evolution of
three galaxies and their ionising efficiency. We found that the variability of
$f_{esc}$ follows that of the star formation rate. We then discuss the
consequences of this variability on the observability of such galaxies by JWST.
