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CONTEXT. It is theoretically possible for rings to have formed aroundextrasolar planets in a similar way to that in which they formed around thegiant planets in our solar system. However, no such rings have been detected todate.  AIMS: We aim to test the possibility of detecting rings around exoplanets byinvestigating the photometric and spectroscopic ring signatures inhigh-precision transit signals.  METHODS: The photometric and spectroscopic transit signals of a ringed planetis expected to show deviations from that of a spherical planet. We used thesedeviations to quantify the detectability of rings. We present SOAP3.0 which isa numerical tool to simulate ringed planet transits and measure ringdetectability based on amplitudes of the residuals between the ringed planetsignal and best fit ringless model.  RESULTS: We find that it is possible to detect the photometric andspectroscopic signature of near edge-on rings especially around planets withhigh impact parameter. Time resolution $\leq$ 7 mins is required for thephotometric detection, while 15 mins is sufficient for the spectroscopicdetection. We also show that future instruments like CHEOPS and ESPRESSO, withprecisions that allow ring signatures to be well above their noise-level,present good prospects for detecting rings.

Detecting transit signatures of exoplanetary rings using SOAP3.0