In the Crosshair: Astrometric Exoplanet Detection with WFIRST's Diffraction Spikes
In the Crosshair: Astrometric Exoplanet Detection with WFIRST's Diffraction Spikes
Abstract WFIRST will conduct a coronagraphic program that characterizes the atmospheres of planets around bright nearby stars. When observed with the WFIRST Wide Field Camera, these stars will saturate the detector and produce very strong diffraction spikes. In this paper, we forecast the astrometric precision that WFIRST can achieve by …