206 citations · 1.1k across the 11 of their papers we have counts for
11 papers
Precision Cosmology with the Lightest Elements
Max Pettini, Ryan Cooke
This is a transcript of the joint talk we gave at the Sixth Gruber Cosmology Conference at Yale University on 3 October 2025. We describe the key role played by Big Bang Nucleosynt…
A survey of extremely metal-poor gas at cosmic noon: evidence of elevated [O/Fe]
Louise Welsh, Ryan Cooke, Michele Fumagalli +2
We aim to study the high-precision chemical abundances of metal-poor gas clouds at cosmic noon (2<z<4) and investigate the associated enrichment histories. We analyse the abundance…
The First Large Absorption Survey in HI (FLASH): II. Pilot Survey data release and first results
Hyein Yoon, Elaine M. Sadler, Elizabeth K. Mahony +41
The First Large Absorption Survey in HI (FLASH) is a large-area radio survey for neutral hydrogen in the redshift range 0.4<z<1.0, using the 21cm HI absorption line as a probe of c…
A search for HI 21cm absorption towards a radio-selected quasar sample II: a new low spin temperature DLA at high redshift
Nissim Kanekar, Sara L. Ellison, Emmanuel Momjian +2
We report results from a deep search for redshifted HI 21cm absorption from eight damped Lyman- absorbers (DLAs) detected in our earlier optical survey for DLAs towards radio-lo…
The Host Galaxies of Swift Dark Gamma-Ray Bursts: Observational Constraints on Highly Obscured and Very High-Redshift GRBs
D. A. Perley, S. B. Cenko, J. S. Bloom +13
In this work we present the first results of our imaging campaign at Keck Observatory to identify the host galaxies of "dark" gamma-ray bursts (GRBs), events with no detected optic…
A downturn in intergalactic CIV as redshift 6 is approached
Emma V. Ryan-Weber, Max Pettini, Piero Madau +1
We present the results of the largest survey to date for intergalactic metals at redshifts z > 5, using near-IR spectra of nine QSOs with emission redshifts z(em) > 5.7. We find, f…