text:   fraction of star-forming galaxies at z=3.5",5,"[""New paper on the arXiv today, lead by PhD student Ryan Begley. In it we estimate the LyC escape fraction in star-forming galaxies at z=3.5, combining data from VANDELS (for robust spec-z's) with the deep VIMOS U-band imaging in CDFS (tracing LyC). <LINK>"", 'Using detailed IGM+CGM modelling to marginalise of the full sightline distribution, we fit the ionizing to non-ionizing flux ratio distribution of our sample and find an average escape fraction of f_esc = 0.07 +/- 0.02. https://t.co/VUxdFV3BXp', ""We also find trends with various galaxy physical properties: galaxies with larger LyA EW's, lower dust and fainter intrinsic UV luminosities have higher f_esc. In contrast, we see no clear stellar mass trend. https://t.co/Bm9WGlpQXE"", ""I think the paper nicely demonstrates that we can measure f_esc from broad-band photometry as long as we have a large enough samples with spec-z's, accurately model the IGM+CGM, and fit the full flux ratio distribution (e.g., rather than stacking images)."", '.. now we just need larger sample sizes so that we can fit more complex underlying f_esc distributions!']",22,02,1057