Redshift evolution of Lyman continuum escape fraction after JWST
Year: 2025
Type: article
Abstract: The LyC escape fraction from galaxies, , is strongly boosted by galactic outflows. In the Attenuation-Free Model (AFM) accounting for the properties of z > 10 galaxies, radiation-driven outflows develop once the galaxy specific star formation rate, . As the cosmic sSFR increases with redshift, so does , which, when globally averaged, grows from 0.007 to 0.6 in 0 < z < 20 . We successfully tested the model on specific data sub-samples. Our predictions are consistent with measurements of , and provide a physical explanation for the observed decreasing trend of the mean UV galaxy spectral slope, β , towards high- z .
Source: The Open Journal of Astrophysics
DOI: 10.33232/001c.143600
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4413607461