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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…
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…
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…
Re-analysis of Phosphine in Venus' Clouds
Jane S. Greaves, Anita M. S. Richards, William Bains +7
We first respond to two points raised by Villanueva et al. We show the JCMT discovery spectrum of PH3 can not be re-attributed to SO2, as the line width is larger than observed for…
Phosphine Gas in the Cloud Decks of Venus
Jane S. Greaves, Anita M. S. Richards, William Bains +16
Measurements of trace-gases in planetary atmospheres help us explore chemical conditions different to those on Earth. Our nearest neighbor, Venus, has cloud decks that are temperat…
Phosphine on Venus Cannot be Explained by Conventional Processes
William Bains, Janusz J. Petkowski, Sara Seager +6
The recent candidate detection of ~1 ppb of phosphine in the middle atmosphere of Venus is so unexpected that it requires an exhaustive search for explanations of its origin. Phosp…