John K Webb

most citedSearching for new physics using high precision absorption spectroscopy; continuum placement uncertainties and

Δ α / α

towards the quasar PHL957

1 citations · 1 across the 2 of their papers we have counts for

collaborators

2 papers

astro-ph.CO2024★ 1 cited

Searching for new physics using high precision absorption spectroscopy; continuum placement uncertainties and $Δ α / α$ towards the quasar PHL957

John K. Webb, Chung-Chi Lee, Dinko Milaković +3

Detecting or placing upper limits on spacetime variations of fundamental constants requires quantifying every potential source of uncertainty. We continue our previous study into t…

astro-ph.GA2024

Isotopic abundance of carbon in the DLA towards QSO B1331+170

Dinko Milaković, John K. Webb, Paolo Molaro +19

Chemical evolution models predict a gradual build-up of $^{13}$ C in the universe, based on empirical nuclear reaction rates and assumptions on the properties of stellar populations…

Searching for new physics using high precision absorption spectroscopy; continuum placement uncertainties and Δα/α towards the quasar PHL957

Isotopic abundance of carbon in the DLA towards QSO B1331+170

Searching for new physics using high precision absorption spectroscopy; continuum placement uncertainties and $Δ α / α$ towards the quasar PHL957