Statistical methods using hydrodynamic simulations of stellar atmospheres for detecting exoplanets in radial velocity data (2017)
Abstract / truncated to 115 words
When the noise affecting time series is colored with unknown statistics, a difficulty for periodic signal detection is to control the true significance level at which the detection tests are conducted. This thesis investigates the possibility of using training datasets of the noise to improve this control. Specifically, for the case of regularly sampled observations, we analyze the performances of various detectors applied to periodograms standardized using the noise training datasets. Emphasis is put on sparse detection in the Fourier domain and on the limitation posed by the necessary finite size of the training sets available in practice. We study the resulting false alarm and detection rates and show that the proposed standardization leads, in ... toggle 6 keywordssignal processing – test statistics – exoplanet – radial velocity – stellar colored noise – sparse detection
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