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Radial and azimuthal features (such as disc offsets and eccentric rings) seenin high resolution images of debris discs, provide us with the uniqueopportunity of finding potential planetary companions which betray theirpresence by gravitationally sculpting such asymmetric features. The youngdebris disc around HD 115600, imaged recently by the Gemini Planet Imager, issuch a disc with an eccentricity 0.1<e<0.2 and a projected offset from the starof 4 AU. Using our modified N-body code which incorporates radiation forces, wefirstly aim to determine the orbit of a hidden planetary companion potentiallyresponsible for shaping the disc. We run a suite of simulations covering abroad range of planetary parameters using a Monte Carlo Markov Chain samplingmethod and create synthetic images from which we extract the geometric discparameters to be compared with the observed and model-derived quantities. Wethen repeat the study using a traditional grid to explore the planetaryparameter space and aim secondly to compare the efficiency of both samplingmethods. We find a planet of 7.8 Jupiter mass orbiting at 30 AU with aneccentricity of e = 0.2 to be the best fit to the observations of HD 115600.Technically, such planet has a contrast detectable by direct imaging, howeverthe system's orientation does not favour such detection. In this study, atequal number of explored planetary configurations, the Monte Carlo Markov Chainnot only converges faster but provides a better fit than a traditional grid.

Numerical search for a potential planet sculpting the young disc of HD 115600