Detecting and confirming terrestrial planets is incredibly difficult due to their tiny size and
mass relative to Sun-like host stars. However, recent instrumental advancements are making …

Modern astronomy has been rapidly increasing our ability to see deeper into the Universe,
acquiring enormous samples of cosmic populations. Gaining astrophysical insights from …

Context. The detectability of exoplanets and the determination of their projected mass in
radial velocity are affected by stellar magnetic activity and photospheric dynamics. Among …

Context. Convective motions at the stellar surface generate a stochastic colored noise
source in the radial velocity (RV) data. This noise impedes the detection of small exoplanets …

Context. The detection of small exoplanets with the radial velocity (RV) technique is limited
by various poorly known noise sources of instrumental and stellar origin. As a consequence …

Stellar variability has become a major issue to detect low mass planets using the radial
velocity technique. I present the approaches followed to characterise the amplitude and the …

Considering a time series affected by a colored noise of unknown statistics, a difficulty for
periodic signal detection is to control the true significance level at which the detection tests …

We propose a numerical methodology for detecting periodicities in unknown colored noise
and for evaluating the 'significance levels'(p-values) of the test statistics. The procedure …

Dans cette note, nous considérons le probleme de construction de tests de détection pour
certains types de données issues de l'astrophysique. Une caractéristique commune des …