827 citations · 5.4k across the 81 of their papers we have counts for
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Methods for quasar absorption system measurements of the fine structure constant in the 2020s and beyond
Dinko Milaković, Chung-Chi Lee, Paolo Molaro +1
This article reviews the two major recent developments that significantly improved cosmological measurements of fundamental constants derived from high resolution quasar spectrosco…
Lines of sight through randomly oriented flattened spheroids; quasar absorption cloud sizes
John K. Webb
Randomly oriented flattened spheroids have been used to describe a broad range of astrophysical phenomena. Here we use this geometric approach to derive equations representing line…
Varying alpha, blinding, and bias in existing measurements
Chung-Chi Lee, John K. Webb, Robert F. Carswell +3
The high resolution spectrograph ESPRESSO on the VLT allows measurements of fundamental constants at unprecedented precision and hence enables tests for spacetime variations predic…
Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
Elcio Abdalla, Guillermo Franco Abellán, Amin Aboubrahim +200
In this paper we will list a few important goals that need to be addressed in the next decade, also taking into account the current discordances between the different cosmological…
Avoiding bias in measurements of fundamental constants from high resolution quasar spectra
John K. Webb, Chung-Chi Lee, Dinko Milaković
Recent advances in spectroscopic instrumentation and calibration methods dramatically improve the quality of quasar spectra. Supercomputer calculations show that, at high spectral…
Non-uniqueness in quasar absorption models and implications for measurements of the fine structure constant
Chung-Chi Lee, John K. Webb, Dinko Milaković +1
High resolution spectra of quasar absorption systems provide the best constraints on temporal or spatial changes of fundamental constants in the early universe. An important system…