Bayesian Hypothesis Testing for Planet Detection

Details Bayesian Hypothesis Testing for Planet Detection Bayesian Hypothesis Testing for Planet Detection

2004-04-10

arxiv.org/abs/astro-ph/0404220v1

Astronomy and Astrophysics

Astrophysics

15 pages, 4 figures

Scientific paper

The past five years has seen a surge in research and innovative ideas for the imaging of extrasolar planets, particular terrestrial ones. We expect that within the next decade a space observatory will be launched with the objective of imaging earthlike planets. Because of the limited lifetime of such a mission and the large number of potential targets, integration time is a critical parameter. In fact, integration time is the primary metric in evaluating various design approaches for the high contrast imaging system. In this paper we present a new approach to determining the existence of a planet in an observed system using Bayesian hypothesis testing. Rather than perform photometry, or rely on vision to determine the existence of a planet, this approach evaluates the image plane data statistically under certain assumptions about the prior probability distributions. We show that extremely high confidence can be achieved in substantially shorter integration times than conventional photometric methods.

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