Outflows from Star-Forming Galaxies in the Early Universe: Evolution from Double- to Single-Peaked Lyman-$ \alpha $ Profiles Following Delayed Supernova FeedbackJames Nianias, Jeremy Lim, Yik Lok Wong, Gordon Wonghttps://arxiv.org/abs/2506.20422
Outflows from Star-Forming Galaxies in the Early Universe: Evolution from Double- to Single-Peaked Lyman-$ α$ Profiles Following Delayed Supernova FeedbackLyman-$ α$ emission, which owing to its resonant nature strongly couples the emergent line profile to gas kinematics, has become a key observable for probing outflows from star-forming galaxies in the early universe. Typically, Lyman-$ α$ profiles are explained in terms of idealised expanding shell models, while empirically-motivated interpretations of Lyman-$ α$ profiles that make use of comparisons with kinematics revealed by other spectral features (e.g. metal emission and absorption line…