488 citations · 3.7k across the 69 of their papers we have counts for
69 papers
Detecting the IGM metal enrichment with the 2-point correlation function of the flux. Application to the UVES deep spectrum
Simona Di Stefano, Valentina D'Odorico, Guido Cupani +5
The distribution and the abundance of metals in the intergalactic medium (IGM) have strong implications on galaxy formation and evolution models. The ionic transitions of heavy ele…
The cosmic web's Lyman- glow at ; hydrodynamic models, dust, and wide-field, narrow-band detection
Oleksii Sokoliuk, John K. Webb, Kenneth M. Lanzetta +12
The diffuse Lyman- glow of the cosmic web has long been predicted but has so far eluded direct detection over cosmologically significant volumes. We construct synthetic Lyman-$α…
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…
Addendum: Precision in high resolution absorption line modelling, analytic Voigt derivatives, and optimisation methods
Chung-Chi Lee, John K. Webb, Robert F. Carswell
The parent paper to this Addendum describes the optimisation theory on which VPFIT, a non-linear least-squares program for modelling absorption spectra, is based. In that paper, we…
Precision in high resolution absorption line modelling, analytic Voigt derivatives, and optimisation methods
John K. Webb, Robert F. Carswell, Chung-Chi Lee
This paper describes the optimisation theory on which VPFIT, a non-linear least-squares program for modelling absorption spectra, is based. Particular attention is paid to precisio…
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…