Accounting for stellar activity signals in radial-velocity data by using change point detection techniques

@article{Simola2022AccountingFS,
  title={Accounting for stellar activity signals in radial-velocity data by using change point detection techniques},
  author={Umberto Simola and A. Bonfanti and Xavier Dumusque and Jessi Cisewski-Kehe and Saara Kaski and Jukka Corander},
  journal={Astronomy \& Astrophysics},
  year={2022}
}
Context. Active regions on the photosphere of a star have been the major obstacle for detecting Earth-like exoplanets using the radial velocity (RV) method. A commonly employed solution for addressing stellar activity is to assume a linear relationship between the RV observations and the activity indicators along the entire time series, and then remove the estimated contribution of activity from the variation in RV data (overall correction method). However, since active regions evolve on the… 

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