Splitting biosignature survey targets into two groups with different life prevalences but a shared global confounder rate allows modest-sized surveys to produce strong evidence for life under fully agnostic priors.
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Simulations show LIFE could use 25-80 m baselines or discrete values with under 10% loss in planet yield and fringe tracking.
LIFE can constrain atmospheric H2O abundances from roughly 10^{-3} to 1 bar surface pressure on Earth-like exoplanets for certain vertical profiles, providing a potential proxy for surface oceans, but cannot detect water below 10^{-6} bar or precisely characterize the highest abundances.
citing papers explorer
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The Catastrophic Consequences of Agnosticism for Life Searches and a Possible Workaround
Splitting biosignature survey targets into two groups with different life prevalences but a shared global confounder rate allows modest-sized surveys to produce strong evidence for life under fully agnostic priors.
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A preliminary exploration of the effects of baseline length for the LIFE space mission
Simulations show LIFE could use 25-80 m baselines or discrete values with under 10% loss in planet yield and fringe tracking.
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The Goldilocks problem for detecting water in terrestrial planets: Constraining water abundances in the mid-IR with LIFE
LIFE can constrain atmospheric H2O abundances from roughly 10^{-3} to 1 bar surface pressure on Earth-like exoplanets for certain vertical profiles, providing a potential proxy for surface oceans, but cannot detect water below 10^{-6} bar or precisely characterize the highest abundances.