339 citations · 2.8k across the 52 of their papers we have counts for
12 papers · 1 filter
Production of Ammonia Makes Venusian Clouds Habitable and Explains Observed Cloud-Level Chemical Anomalies
William Bains, Janusz J. Petkowski, Paul B. Rimmer +1
The atmosphere of Venus remains mysterious, with many outstanding chemical connundra. These include: the unexpected presence of ~10 ppm O2 in the cloud layers; an unknown compositi…
Venusian phosphine: a 'Wow!' signal in chemistry?
William Bains, Janusz J. Petkowski, Sara Seager +6
The potential detection of ppb levels phosphine (PH3) in the clouds of Venus through millimeter-wavelength astronomical observations is extremely surprising as PH3 is an unexpected…
Starting Life and Searching for Life on Rocky Planets
Paul B Rimmer, Sukrit Ranjan, Sarah Rugheimer
The study of origins of life on Earth and the search for life on other planets are closely linked. Prebiotic chemical scenarios can help prioritize planets as targets for the searc…
Photochemistry of Venus-Like Planets Orbiting K- and M-Dwarf Stars
Sean Jordan, Paul B. Rimmer, Oliver Shorttle +1
Compared to the diversity seen in exoplanets, Venus is a veritable astrophysical twin of the Earth, however its global cloud layer truncates features in transmission spectroscopy,…
Stellar versus Galactic: The intensity of energetic particles at the evolving Earth and young exoplanets
D. Rodgers-Lee, A. A. Vidotto, A. M. Taylor +2
Energetic particles may have been important for the origin of life on Earth by driving the formation of prebiotic molecules. We calculate the intensity of energetic particles, in t…
Low levels of sulphur dioxide contamination of Venusian phosphine spectra
Jane S. Greaves, Paul B. Rimmer, Anita M. S. Richards +7
New analysis is presented of the 1.1 mm wavelength absorption lines in Venus' atmosphere that suggested the presence of phosphine. We retrieve a sulphur dioxide observation from th…
Detectable Abundance of Cyanoacetylene (HCN) Predicted on Reduced Nitrogen-Rich Super-Earth Atmospheres
Paul B. Rimmer, Liton Majumdar, Akshay Priyadarshi +2
We predict that cyanoacetylene (HCN) is produced photochemically in the atmosphere of GJ 1132 b in abundances detectable by the James Webb Space Telescope (JWST), assuming that…
Recovery of Spectra of Phosphine in Venus' Clouds
Jane S. Greaves, Anita M. S. Richards, William Bains +7
We recover PH3 in the atmosphere of Venus in data taken with ALMA, using three different calibration methods. The whole-planet signal is recovered with 5.4σ confidence using Venus…
Ariel: Enabling planetary science across light-years
Giovanna Tinetti, Paul Eccleston, Carole Haswell +313
Ariel, the Atmospheric Remote-sensing Infrared Exoplanet Large-survey, was adopted as the fourth medium-class mission in ESA's Cosmic Vision programme to be launched in 2029. Durin…
Detection of an Atmosphere on a Rocky Exoplanet
Mark R. Swain, Raissa Estrela, Gael M. Roudier +7
We report the detection of an atmosphere on a rocky exoplanet, GJ 1132 b, which is similar to Earth in terms of size and density. The atmospheric transmission spectrum was detected…
Hydroxide salts in the clouds of Venus: their effect on the sulfur cycle and cloud droplet pH
Paul B. Rimmer, Sean Jordan, Tereza Constantinou +4
The depletion of SO and HO in and above the clouds of Venus (45 -- 65 km) cannot be explained by known gas-phase chemistry and the observed composition of the atmosphere. W…
Sulfur Chemistry in the Atmospheres of Warm and Hot Jupiters
Richard Hobbs, Paul Rimmer, Oliver Shorttle +1
We present and validate a new network of atmospheric thermo-chemical and photo-chemical sulfur reactions. We use a 1-D chemical kinetics model to investigate these reactions as par…