The postdoctoral fellow will derive benchmarks of characterizing exoplanets using observations of solar system bodies along with numerical simulations. Solar system bodies provide the ground truth for positive/negative biosignatures in planetary systems. The research will use solar system bodies as proxies to analyze the detectability and observation limit for biosignatures on exoplanets. Full-disk observations of Earth by Deep Space Climate Observatory (DSCOVR), and other planets, Venus by Akatsuki and Jupiter by Cassini etc., will be used for planetary light curve analysis, along with Global Climate Model (GCM) as well as radiative transfer models of exoplanets. The goal is to develop applicable methodologies for deducing planetary properties of distant potentially habitable worlds. The outcomes expect to include an improved astrophysical characterization approach of exoplanet, a framework of assessing the detectability of potential biosignatures, and a technique of determining information content from exoplanet time series. The research may also be over this range.
Jiang, J. H., et al. Using Deep Space Climate Observatory Measurements to Study the Earth as an Exoplanet. The Astronomical Journal. 156 (1), 26 (2018).
Fan, S., et al. Earth as an Exoplanet: A Two-dimensional Alien Map. The Astrophysical Journal Letters. 882 (1), L1 (2019).
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