A Gaussian process framework for modelling stellar activity signals in radial velocity data

  title={A Gaussian process framework for modelling stellar activity signals in radial velocity data},
  author={Vinesh M. Rajpaul and Suzanne Aigrain and Michael A. Osborne and Steven Reece and Stephen J. Roberts},
  journal={Monthly Notices of the Royal Astronomical Society},
  • V. Rajpaul, S. Aigrain, S. Roberts
  • Published 24 June 2015
  • Physics, Geology, Computer Science
  • Monthly Notices of the Royal Astronomical Society
To date, the radial velocity (RV) method has been one of the most productive techniques for detecting and confirming extrasolar planetary candidates. Unfortunately, stellar activity can induce RV variations which can drown out or even mimic planetary signals - and it is notoriously difficult to model and thus mitigate the effects of these activity-induced nuisance signals. This is expected to be a major obstacle to using next-generation spectrographs to detect lower mass planets, planets with… 
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