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- W4221088457 abstract "The cosmic ionizing emissivity from star-forming galaxies has long been anchored to UV luminosity functions. Here we introduce an emissivity framework based on Ly$alpha$ emitters (LAEs), which naturally hones in on the subset of galaxies responsible for the ionizing background due to the intimate connection between the production and escape of Ly$alpha$ and LyC photons. Using constraints on the escape fractions of bright LAEs ($L_{rm{Lyalpha}}>0.2 L^{*}$) at $zapprox2$ obtained from resolved Ly$alpha$ profiles, and arguing for their redshift-invariance, we show that: (i) quasars and LAEs together reproduce the relatively flat emissivity at $zapprox2-6$, which is non-trivial given the strong evolution in both the star-formation density and quasar number density at these epochs and (ii) LAEs produce late and rapid reionization between $zapprox6-9$ under plausible assumptions. Within this framework, the $>10times$ rise in the UV population-averaged $f_{rm{esc}}$ between $zapprox3-7$ naturally arises due to the same phenomena that drive the growing Ly$alpha$ emitter fraction with redshift. Generally, a LAE dominated emissivity yields a peak in the distribution of the ionizing budget with UV luminosity as reported in latest simulations. Using our adopted parameters ($f_{rm{esc}}=50%$, $xi_{rm{ion}}=10^{25.9}$ Hz erg$^{-1}$ for half the bright LAEs), a highly ionizing minority of galaxies with $M_{rm UV}<-17$ accounts for the entire ionizing budget from star-forming galaxies. Rapid flashes of LyC from such rare galaxies produce a disco ionizing background. We conclude proposing tests to further develop our suggested Ly$alpha$-anchored formalism." @default.
- W4221088457 created "2022-04-03" @default.
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- W4221088457 date "2022-03-03" @default.
- W4221088457 modified "2023-10-11" @default.
- W4221088457 title "(Re)Solving reionization with Lyα: how bright Lyα Emitters account for the <i>z</i> ≈ 2–8 cosmic ionizing background" @default.
- W4221088457 cites W1213402739 @default.
- W4221088457 cites W1590192245 @default.
- W4221088457 cites W1590824262 @default.
- W4221088457 cites W1622230873 @default.
- W4221088457 cites W1948434082 @default.
- W4221088457 cites W1962697969 @default.
- W4221088457 cites W1985198043 @default.
- W4221088457 cites W1986545671 @default.
- W4221088457 cites W1997937178 @default.
- W4221088457 cites W2005411300 @default.
- W4221088457 cites W2034960857 @default.
- W4221088457 cites W2045839758 @default.
- W4221088457 cites W2053342159 @default.
- W4221088457 cites W2060365648 @default.
- W4221088457 cites W2067649418 @default.
- W4221088457 cites W2069884262 @default.
- W4221088457 cites W2073357077 @default.
- W4221088457 cites W2077821708 @default.
- W4221088457 cites W2110135918 @default.
- W4221088457 cites W2117323006 @default.
- W4221088457 cites W2149072120 @default.
- W4221088457 cites W2271225552 @default.
- W4221088457 cites W2310543984 @default.
- W4221088457 cites W2344891990 @default.
- W4221088457 cites W2414613427 @default.
- W4221088457 cites W2463295771 @default.
- W4221088457 cites W2470589409 @default.
- W4221088457 cites W2521861159 @default.
- W4221088457 cites W2522290439 @default.
- W4221088457 cites W2524194729 @default.
- W4221088457 cites W2569199829 @default.
- W4221088457 cites W2591549833 @default.
- W4221088457 cites W2592681376 @default.
- W4221088457 cites W2609922885 @default.
- W4221088457 cites W2610930874 @default.
- W4221088457 cites W2660513740 @default.
- W4221088457 cites W2751490122 @default.
- W4221088457 cites W2756257729 @default.
- W4221088457 cites W2756436221 @default.
- W4221088457 cites W2759300119 @default.
- W4221088457 cites W2766816578 @default.
- W4221088457 cites W2773960936 @default.
- W4221088457 cites W2779089293 @default.
- W4221088457 cites W2783956240 @default.
- W4221088457 cites W2784796110 @default.
- W4221088457 cites W2785832652 @default.
- W4221088457 cites W2786252741 @default.
- W4221088457 cites W2787977416 @default.
- W4221088457 cites W2792225875 @default.
- W4221088457 cites W2797278231 @default.
- W4221088457 cites W2798513623 @default.
- W4221088457 cites W2803642656 @default.
- W4221088457 cites W2805514356 @default.
- W4221088457 cites W2811351692 @default.
- W4221088457 cites W2883912865 @default.
- W4221088457 cites W2890475738 @default.
- W4221088457 cites W2895822633 @default.
- W4221088457 cites W2910323411 @default.
- W4221088457 cites W2913221613 @default.
- W4221088457 cites W2914868010 @default.
- W4221088457 cites W2950015636 @default.
- W4221088457 cites W2954581782 @default.
- W4221088457 cites W2963048999 @default.
- W4221088457 cites W2963462915 @default.
- W4221088457 cites W2964323761 @default.
- W4221088457 cites W2965887871 @default.
- W4221088457 cites W2980992670 @default.
- W4221088457 cites W2985464083 @default.
- W4221088457 cites W2994716021 @default.
- W4221088457 cites W2996731454 @default.
- W4221088457 cites W2998755152 @default.
- W4221088457 cites W2998801700 @default.
- W4221088457 cites W2999485775 @default.
- W4221088457 cites W3000305367 @default.
- W4221088457 cites W3003988923 @default.
- W4221088457 cites W3007770847 @default.
- W4221088457 cites W3007841438 @default.
- W4221088457 cites W3011899451 @default.