50 citations · 111 across the 10 of their papers we have counts for
5 papers · 1 filter
A generalised microbial cell model for methane biosignature predictions
Arwen E. Nicholson, Nathan J. Mayne
The majority of potentially habitable planets detected to date are likely quite different to Earth, for example, being larger in radius and mass, differing rotation rates and with…
Life on the Edge: Using Planetary Context to Enhance Biosignatures and Avoid False Positives
Rudy Arthur, Arwen E. Nicholson, Nathan J. Mayne
We use a probability theory framework to discuss the search for biosignatures. This perspective allows us to analyse the potential for different biosignatures to provide convincing…
3D climate simulations of the Archean find that methane has a strong cooling effect at high concentrations
Jake K. Eager-Nash, Nathan J. Mayne, Arwen E. Nicholson +11
Methane is thought to have been an important greenhouse gas during the Archean, although its potential warming has been found to be limited at high concentrations due to its high s…
A Gaian Habitable Zone
Rudy Arthur, Arwen Nicholson
When searching for inhabited exoplanets, understanding the boundaries of the habitable zone around the parent star is key. If life can strongly influence its global environment, th…
Gaian bottlenecks and planetary habitability maintained by evolving model biospheres: The ExoGaia model
Arwen E. Nicholson, David M. Wilkinson, Hywel T. P. Williams +1
The search for habitable exoplanets inspires the question - how do habitable planets form? Planet habitability models traditionally focus on abiotic processes and neglect a biotic…