Sven De Rijcke, Bert Vandenbroucke, NN

Ghent University

•  UV escape fraction → cosmic UV background Previous work: •  Need good handle on neutral fraction Paardekooper et al. 2011,

•  Coupling with radiative transfer code Razoumov & Sommer-Larsen 2010, Wise & Chen 2009

Oesch et al. 2010 Large population of z~7 dwarf galaxies

Conclusions

hydrodynamical props. ↑ Heating by SN, UV background → ionization balance → cooling/heating rate Chianti(Py) ↓ UV escape fraction High-fidelity simulations → observational domain

•  WP1: code coupling •  WP3: turbulence •  WP5: radiation & dynamics

Benefit from collaborations with groups working on (solar) plasma physics, radiative transfer, … → CHARM