12 citations · 14 across the 4 of their papers we have counts for
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astro-ph.CO2026
A 2% determination of from primordial element abundance, cosmic microwave background, and baryon acoustic oscillation measurements
Samuel Goldstein, J. Colin Hill
We present a new constraint on the effective number of relativistic species in the early universe, , by combining recent primordial helium abundance measurements from…
astro-ph.CO2024★ 2 cited
SPECTER: An Instrument Concept for CMB Spectral Distortion Measurements with Enhanced Sensitivity
Alina Sabyr, Carlos Sierra, J. Colin Hill +1
Deviations of the cosmic microwave background (CMB) energy spectrum from a perfect blackbody uniquely probe a wide range of physics, ranging from fundamental physics in the primord…
astro-ph.CO2019★ 12 cited
Measuring the Hubble constant from the cooling of the CMB monopole
Maximilian H. Abitbol, J. Colin Hill, Jens Chluba
The cosmic microwave background (CMB) monopole temperature evolves with the inverse of the cosmological scale factor, independent of many cosmological assumptions. With sufficient…