“Two modes of LyC escape from bursty star formation: implications for [C II] deficits and the sources of reionization” by Harley Katz et al. (2023) describes observational signatures of the escape of ionizing radiation from galaxies. Galaxies that have recently experienced strong starbursts are found to exhibit the highest escape fraction, and their nature of escape depends on whether the star formation activity is still ongoing or has recently ceased. CII, Ha, and UV emission is predicted to be a good indicator of ionizing radiation ‘leaking’ and, if so, which of these categories galaxies belong to.
