Two Modes of LyC Escape From Bursty Star Formation: Implications for [C II] Deficits and the Sources of Reionization
Résumé
We use the SPHINX $20$ cosmological radiation hydrodynamics simulation to study how Lyman Continuum (LyC) photons escape from galaxies and the observational signatures of this escape. We define two classes of LyC leaker: Bursty Leakers and Remnant Leakers, based on their star formation rates (SFRs) that are averaged over 10 Myr (SFR10) or 100 Myr (SFR100). Both have fesc>20% and experienced an extreme burst of star formation, but Bursty Leakers have SFR10>SFR100, while Remnant Leakers have SFR1020% dominate the ionizing photon budget at z≳7.5 but the contribution from galaxies with fesc<5% becomes significant at the tail-end of reionization
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