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13 September 2010 Finding and measuring extrasolar planets using speckle statistics
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Proceedings Volume 7387, Speckle 2010: Optical Metrology; 73870Z (2010)
Event: Speckle 2010, 2010, Florianapolis, Brazil
The main limitation to imaging of planets outside the Solar System is the contrast ratio and small separation between the star and its companion. Quasi-static speckles produced by the telescope optics constitute the main impediment for detection of close-in sources. We propose a complete framework for the detection and first-order characterization of extrasolar planets from a sequence of compensated images. The new methods rely on the observation that statistics of intensity inside the core of a high-quality point spread function differ from the off-axis (speckle) statistics. To calculate the efficiency of our methods we derive analytical expressions for mean and standard deviation of intensity. For photometry, the difference in statistics between the on-axis and off-axis intensity is used to constrain a one-dimensional, "blind," iterative deconvolution at the position of the companion.
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Szymon Gladysz and Natalia Yaitskova "Finding and measuring extrasolar planets using speckle statistics", Proc. SPIE 7387, Speckle 2010: Optical Metrology, 73870Z (13 September 2010);

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