The majority of cataclysmic variable ( CV ) stars contain a stochastic noise component in their light curves , commonly referred to as flickering .
This can significantly affect the morphology of CV eclipses and increases the difficulty in obtaining accurate system parameters with reliable errors through eclipse modelling .
Here we introduce a new approach to eclipse modelling , which models CV flickering with the help of Gaussian processes ( GPs ) .
A parameterised eclipse model - with an additional GP component - is simultaneously fit to 8 eclipses of the dwarf nova ASASSN-14ag and system parameters determined .
We obtain a mass ratio q = 0.149 \pm 0.016 and inclination i = 83.4 ^ { +0.9 } _ { -0.6 } ^ { \circ } .
The white dwarf and donor masses were found to be M _ { w } = 0.63 \pm 0.04 M _ { \odot } and M _ { d } = 0.093 ^ { +0.015 } _ { -0.012 } M _ { \odot } , respectively .
A white dwarf temperature T _ { w } = 14000 ^ { +2200 } _ { -2000 } K and distance d = 146 ^ { +24 } _ { -20 } pc were determined through multicolour photometry .
We find GPs to be an effective way of modelling flickering in CV light curves and plan to use this new eclipse modelling approach going forward .