A New Standard for Assessing the Performance of High Contrast Imaging Systems

作者：Jensen-Clem Rebecca^*; Mawet Dimitri; Gonzalez Carlos A. Gomez; Absil Olivier; Belikov Ruslan; Currie Thayne; Kenworthy Matthew A.; Marois Christian; Mazoyer Johan; Ruane Garreth; Tanner Angelle; Cantalloube Faustine

来源：Astronomical Journal, 2018, 155(1): 19.

DOI：10.3847/1538-3881/aa97e4

• methods: statistical
• techniques: high angular resolution

As planning for the next generation of high contrast imaging instruments (e.g., WFIRST, HabEx, and LUVOIR, TMT-PFI, EELT-EPICS) matures and second-generation ground-based extreme adaptive optics facilities (e.g., VLT-SPHERE, Gemini-GPI) finish their principal surveys, it is imperative that the performance of different designs, post-processing algorithms, observing strategies, and survey results be compared in a consistent, statistically robust framework. In this paper, we argue that the current industry standard for such comparisons-the contrast curve-falls short of this mandate. We propose a new figure of merit, the "performance map,"that incorporates three fundamental concepts in signal detection theory: the true positive fraction, the false positive fraction, and the detection threshold. By supplying a theoretical basis and recipe for generating the performance map, we hope to encourage the widespread adoption of this new metric across subfields in exoplanet imaging.

• 出版日期2018-1