395 citations · 1.2k across the 8 of their papers we have counts for
Showing 2019Show all
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astro-ph.CO2019★ 1 cited
Determining the primordial helium abundance and UV background using fluorescent emission in star-free dark matter haloes
Calvin Sykes, Michele Fumagalli, Ryan Cooke +1
Observational measures of the primordial helium mass fraction, , are of interest for cosmology and fundamental particle physics. Current measures obtained from H II regi…
astro-ph.GA2019★ 162 cited
Gas filaments of the cosmic web located around active galaxies in a proto-cluster
H. Umehata, M. Fumagalli, I. Smail +15
Cosmological simulations predict the Universe contains a network of intergalactic gas filaments, within which galaxies form and evolve. However, the faintness of any emission from…
astro-ph.GA2019★ 7 cited
Fluorescent rings in star-free dark matter haloes
Calvin Sykes, Michele Fumagalli, Ryan Cooke +2
Photoheating of the gas in low-mass dark matter (DM) haloes prevents baryons from cooling, leaving the haloes free of stars. Gas in these 'dark' haloes remains exposed to the ultra…