2. Rajpaul et al. framework

2.1. Framework

The first framework, developed by Rajpaul et al. (2015), was proposed as an extension of the framework presented in Aigrain et al. (2012). The authors proposed to model the RV measurements , an activity index and the bisector inverse slope jointly as

where represents the activity term, defined by a zero mean GP, its derivative, and , , , , and are free parameters.

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2.2. mini-frame implementation

In mini-frame this framework is called BIGgp that you can imported typing on you python editor

 from miniframe.BIGgp import BIGgp

A simple example of how to use it together with emcee can be found here.